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Characters in brief/boards and members Characteristics in brief: - elektrowärme international has for decades been the technical journal for the electrothermal process-engineering and electrically heated industrial furnace engineering sectors. This industry-specific journal publishes highly practice-orientated experience and application reports by well-known technical experts and provides the specialist world with direct and comprehensive information and aids to decision across the entire field of industrial electrothermal applications (heating, annealing, hardening, melting and casting), as well as covering the construction and equipping of industrial furnaces and industrial-scale electrothermal installations. The editorial scope is rounded off by news and events from industry, research, the specialist associations and individual companies, plus future-orientated product previews of new and further developments in the industry. Advisory board: Dipl.-Ing. H. Linn, Linn High Therm GmbH, Prof. Dr.-Ing. H. Pfeifer, Lehrstuhl für Hochtemperaturtechnik an der RWTH Aachen, T. Schreiter, ABP Induction Systems GmbH, Dr.-Ing. A. Seitzer, Himmelwerk GmbH, Prof. Dr.-Ing. H. Stiele, Hochschule Albstadt-Sigmaringen, Dipl.-Ing. M. D. Werner, Otto Junker GmbH, Dr.-Ing. T. Würz, VDMA e. V Editorial team: Dipl.-Ing. F. Andrä, Prof. Dr.-Ing. E. Baake, Dipl.-Ing. S. Beer, Dr.-Ing. F. Beneke, Dipl.-Ing. A. Book, Dr.-Ing S. Dappen, Dr.-Ing. E. Dötsch, Dipl.-Ing. W. Goy, Dipl.-Ing. P. Haase,Dr.-Ing. O. Irretier, Dr.-Ing. C. Krause, Dr. M. Reinhold, Dipl.-Wirtsch.-Ing. St. Schubotz, Dr.-Ing. D. Trauzeddel, Dr.-Ing. E. Wrona, Dr.-Ing. P. Wübben The journal's precise editorial focus makes it the ideal platform for your advertising. Official publication of: Institute of Electrotechnology, University Hannover and VDMA Associations Thermo Process Technology, Frankfurt am Main Editors: Prof. Dr.-Ing. B. Nacke, Institut für Elektroprozesstechnik, Leibniz Universität Hannover, Hon.-Prof. Dr. J. Rinnhofer, SMS Elotherm GmbH www.prozesswaerme.net 4
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Editorial schedule 2017 Issue Date Topical theme Trade fairs/exhibitions/additional distribution 1 March Advertising-deadline: 06.03.2017 Publication date: 27.03.2017 2 June Advertising-deadline: 30.05.2017 Publication date: 20.06.2017 Inductive Heating Heat Treatment in Praxis Energy effiency and innovative heating technology ITPS Special Heat Treatment in Praxis 2017, 29.-31.05.2017, Dortmund ITPS 2017, 27.-28.06.2017, Düsseldorf 3 September Advertising-deadline: 06.09.2017 Publication date: 27.09.2017 4 December Advertising-deadline: 27.11.2017 Publication date: 15.12.2017 Heat Treatment Congress special Inductive melting/materials Heat Treatment Congress 2017, 25.-27.10.2017 Cologne www.prozesswaerme.net Änderungen vorbehalten 7
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11 Advertising formats 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/1 page 210 x 297 mm + 3 mm trimming allowance 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/1 page 1/2 page portait 102 x 297 mm + 3 mm trimming allowance in printed page area 89 x 255 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/1 page in printed page area 182 x 255 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/2 page landscape 210 x 148 mm + 3 mm trimming allowance in printed page area 182 x 125 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/2 page landscape 210 x 148 mm + 3 mm trimming allowance in printed page area 182 x 125 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet Junior Page 132 x 207 + 3 mm trimming allowance in printed page area on request 1/3 page portait 71 x 297 mm + 3 mm trimming allowance in printed page area 60 x 255 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/3 page landscape 210 x 102 mm + 3 mm trimming allowance in printed page area 182 x 80 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/3 page landscape 210 x 102 mm + 3 mm trimming allowance in printed page area 182 x 80 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/4 page portait 103 x 144 mm + 3 mm trimming allowance in printed page area 89 x 125 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/4 page landscape 210 x 82 mm + 3 mm trimming allowance in printed page area 182 x 62 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/4 page portait 103 x 144 mm + 3 mm trimming allowance in printed page area 89 x 125 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/4 page landscape 210 x 82 mm + 3 mm trimming allowance in printed page area 182 x 62 mm 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 61 60 heat processing 4-2012 4-2012 heat processing Infrared drying with porous burners in industrial environments by Michael Angerstein The use of gas infrared burners in general provides huge advantages in many drying and heating processes. Porous burners, being the only short-wave gas infrared burners in the world, are quite special in this regard. The particular features offered by porous burners will be addressed further down in this article. T hey are ready for operation in just a matter of minutes, meaning that the long heat-up phase needed with many convection heaters is no longer necessary. And yet, when using gas infrared burners, the heat transferred is often so high that the drying phase can be much shorter than with circulating air dryers, or higher drying performance can be achieved with the same drying time. operating principle Heat from infrared radiation is transmitted without any kind of contact from the radiation source (the gas infrared burner) to the recipient of the radiation. The dry air allows 100 % of this radiation to pass through. Only when the infrared radiation meets a surface is the radiated energy converted into heat. This operating principle will be very familiar to anyone in a wintery environment sensing the warming effect of the sun on their skin. The highly efficient gas infrared radiant heaters used for low-energy space heating work in a quite similar fashion. Gas infrared burners used for drying in industrial environments are burners that are operated using a combustion air fan. This provides them among other things with better control facilities and allows them to achieve the kind of reproducibility in output that is required in industrial processes. Fig. 1 is a schematic diagram showing an example structure of a gas infrared unit. The individual burners are lined up in a series to create any desired length. Two lines of burners are usually joined to form a twin row. Single or twin rows have ducts fitted on the sides, and this arrangement then forms a single unit. It is possible to arrange any number of these units behind one another. Fig. 1 shows two of these twin rows as an example. Please note that the burner is supplied with gas and combustion air separately and is entirely independent from the ambient air circulation system, which is also depicted. Gas and combustion air are supplied to the burner and burned there. The hot surfaces of the burner emit a very even infrared radiation that is then used for drying or heating. The hot gases from the combustion process and the solvents evaporated in the drying process usually steam are collected via the suction ducts. optimum energy use If the product to be dried permits, the heat energy from the combustion process can be further exploited. In this case, only part of the flow is discharged through the roof, thus preventing the ambient air circulation system from being saturated for example with the vaporous solvent, which is usually steam. The discharged portion must have fresh air added to it, which is achieved by means of a corresponding valve control system. The largest part of the still-hot gases remain in the ambient air circulation system and are blown via the pressure-side ducts onto the product to be dried. This means that, in addition to the radiated heat, there is also convection, thus deriving the maximum possible benefit from the energy. HigH level flexibility Gas infrared burners are large-surface burners, which means that the radiation is emitted very evenly from the entire radiating surface. By arranging burners as appropriate, they can be adapted to the shape of the workpieces. The ability to switch individual rows of burners on and off provides a great deal of flexibility. Systems are also used in practice that enable the radiation width to be modified. By switching off unneeded burners in the case of narrower web widths, for example this allows even more energy to be saved and the already low operating costs to be reduced even further by saving gas. Moreover, the surface burners can be adjusted smoothly to any value between at least 50 % and 100 % output. The porous burner can even achieve values of between around 20 % and 100 %. Large-surface products are particularly well-suited to drying processes with gas infrared burners in principle. Indeed, gas infrared burners are used very successfully to dry coated paper web or coated steel strip, to quote examples. The paper industry works with widths of up to 11 m running at speeds of more than 2000 m/min. While medium-wave gas infrared burners have been in use for decades to dry paper that has been coated on one or both sides, the new type of porous burners have only been in use since 2006. Porous burners have more than proven their value in the harsh arena of everyday practical use. Measurements have confirmed that the high performance of the porous burner (connected loads of up to 1000 kw/m² possible) does not impair the quality of the paper in any way. The much higher supply of energy is used to the same extent for drying as is the case with the much weaker medium-wave burners. This means that in the paper industry using the same available space, meaning that no changes are made to the route taken by the web when switching to a porous burner system the drying performance can be increased many times over. Also of interest is the ability to balance out certain variations in moisture content across the width of the paper web. To achieve this, the required number of burner rows are fitted with a profile correction system. This enables each individual burner in the row to supply varying output, based on the demands of the moisture profile (Fig. 2). The humidity is measured continuously over the width of the web and the burner output of each individual burner is automatically modified so that the residual moisture beyond the IR zone is as even as possible throughout the width of the web. porous burners for drying coated steel strips The use of porous burner to dry coated steel strip is relatively new. The speeds that the strip move at here are much lower than those of the paper industry, but that does not mean that the task at hand is any less complex, as shown by the following requirements profile: Strip width: 700 to 1750 mm Strip thickness: 0.25 to 3.00 mm Strip speed: 3 to 130 m/min Coating weight: 4 g/m² per side, wet Strip supply temperature: 35 C Strip outlet temperature: min. 100 C PMT (peak metal temperature) for each line side. The heated width could be switched to 900, 1200, 1500 width levels. Therefore, with strip of 700 mm in width, a heated width of 900 mm was used, while with a strip width of 1750 mm, a width of 1800 mm was used for using. The different heated widths are shown in Fig. 3. Output is regulated on the basis of the thickness of the material, the speed and the coating material. The various parameters and settings are stored in the PLC as a formula to enable the dryer to enter the correct mode of operation automatically when a stored formula is preselected. This means that the correct width, the required output and the appropriate number of burner rows are automatically activated. Each twin row is fitted with a swivel joint that enables it to be folded away 90 when no longer in use. The swivel joint was fitted for two reasons: 1. The first is that in the event that the strip stops suddenly, the rows can be folded down and operated in low-load mode. This ensures that the strip does not overheat. When the strip is moving again, production can be resumed almost immediately. 2. Furthermore, in the interest of easier maintenance, where strip is running at a height of over 2 m, platforms are integrated into the dryers. This enables easy access to the burners while they are folded away. And replacing a burner is also very simple. Simply remove the four screws on the rear side of the burner, then the new burner and its mounting can be fitted. There is no need to disconnect a gas hose, valve or similar to replace a burner. In another case, there was a need to increase the output of a dryer, because the circulating air dryer in use until then simply did not provide enough drying performance, even though the ambient air temperature was set as high as possible. Strip width: 650 to 1650 mm Strip thickness: 0.3 to 3.00 mm Strip speed: 150 m/min Coating weight: 5 g/m² per side, wet 1/1 printed page area 1/2 page landscape 1/2 page landscape Junior Page 1/3 page portrait 1/3 page landscape 1/3 page landscape 1/4 page portrait 1/4 page landscape 1/4 page portrait 1/4 page landscape 1/8 page landscape in printed page area 182 x 31 mm 1/8 page in printed page area 89 x 62 mm 1/8 page 1/8 page 1/2 page protrait 1/8 landscape 1/8 landscape all formats in width x height
Prozesswärme MARKT + To: Vulkan-Verlag GmbH Attn. Ute Perkovic Postfach 10 39 62 45039 Essen, Germany Fax: +49 201 82002 40 e-mail: u.perkovic@vulkan-verlag.de I/We hereby order for 2017 Contact e-mail adress for proofs Signature 12
Prozesswärme MARKT Spotlight your company s products and services Enter your company address here: Company Postcode/Zip/Town/City Street address Country/State Telephone Fax e-mail Website Specimen 1. Main entry for the year 2017 710.00 (heat processing 1 4 / 2017), incl. logo and link to your homepage. Vulkan-Verlag GmbH Friedrich-Ebert-Str. 55 45127 Essen, Deutschland Tel. +49 201 82002 0 Fax +49 201 82002 40 E-Mail: info@vulkan-verlag.de www.vulkan-verlag.de Every additional entry: 50 % discount Subcategories free of charge Entries run to the end of the calendar year and then terminate automatically. Rates are charged proportionally where placement starts during the ongoing year. Online-version of this order form under www.prozesswaerme.net 13
Prozesswärme MARKT Please select the headings under which your entry is to be included: I. Thermoprozessanlagen für industrielle Wärmebehandlungsverfahren Thermische Gnnung (Erzeugen) Ausschmelzen Brennen Kalzinieren Löten Rösten Sintern Umschmelzen Schmelzen, Gießen Induktives Schmelzen Induktives Rühren/Bremsen Schmelzen (allgemein) Transport, Dosieren Warmhalten (Flüssigphase) Warmhalten und Gießen Pulvermetallurgie Entwachsen Sintern Wärmen An- und Vorwärmen Dielektrische Erwärmung Elektronenstrahlerwärmung Erwärmen Funkenerosion Impulswärmen Induktionsbolzenerwärmung Induktive Erwärmung Konduktive Erwärmung Lasererwärmung Mikrowellen- und Infraroterwärmung Nachwärmen Plasmaerwärmen Thixo-Forming Vakuum- und Schutzgaserwärmung Warmhalten Widerstandserwärmung Wärmebehandlung Aufkohlen Biegen Carbonitrieren Carburieren Dehydrieren Glühen Härten Induktionshärten Kühlen Laser Conditioning Lösungsglühen und Auslagern Nitrieren Randschichthärten Schmieden Sintern Tempern Trocknen Wärmerückgnnung Abkühlen und Abschrecken 14
Prozesswärme MARKT Reinigen und Trocknen Oberflächenbehandlung Induktive Erwärmung zur Beschichtung Metallisches Beschichten Nichtmetallisches Beschichten Fügen Löten Schrumpfen Schweißen Verbinden Recyclen Energieeffizienz Modernisierung von Wärmebehandlungsanlagen II. Bauelemente, Ausrüstungen sowie Betriebs- und Hilfsstoffe Abschreckeinrichtungen Abschreckmedien Düsen für Gasabschrecken Härtereibäder Armaturen Gas Luft Ventile für Erdgasbetankungsanlagen Wasser Chargenträger (CFC) Förder- und Antriebstechnik Chargiermaschinen Lagerungen Gasrohrleitungen/Rohr-Durchführungen Gas-Infrarot-Strahler Gieß- und Schmelzzubehör Industriebrenner Drallbrenner Fackeln Flachflammenbrenner Gasbrenner Gasölbrenner Kanalbrenner Lunten- und Anwärmsysteme Mehrstoffbrenner Ölbrenner Parallelstrombrenner Porenbrenner Regeneratorbrenner Rekuperatorbrenner Ringbrenner Sauerstoffbrenner Sonderbrenner Staubbrenner Strahlrohrbrenner Brenner-Zubehör Armaturen Brennstoffversorgungsanlagen Feuerungsautomaten Flammenwächter Heißgaserzeuger, Brennkammer Leittechnik Regeneratoren Rekuperatoren Strahlheizrohre Überwachung Verbrennungsluftversorgung Wärmerückgnnung Wärmetauscher Brenner-Anwendungen Industriebrenner für Industrieöfen - direkt beheizt Industriebrenner für Industrieöfen - indirekt beheizt Kesselfeuerung Thermische Nachverbrennung Härtereizubehör Heizelemente 15
Prozesswärme MARKT Heizsysteme Direkt beheizte Lüftungssysteme Gasstrahlungsheizungen Kraft-Wärme-Kopplung Induktoren Induktorenbau Verfahrensentwicklung Ofenbaustoffe (nicht Feuerfeststoffe) Graphitisch Keramisch Metallisch Pumpen, Gebläse und Ventilatoren Gase Biogas Deponie- und Grubengas Erdgas Flüssiggas Gasgeneratoren Gasmischeinrichtungen Hochofengas/Gichtgas Kokereigas Schutz-, Reaktions- und Prozessgase Exo-/Endogaserzeuger Gasgeneratoren Gasmischeinrichtungen Schutz-, Reaktions- und Prozessgase Schmiedezubehör Stromversorgung DC-, MF- und HF-Generatoren Generatoren Leistungs-/Thyristorsteller MF- und HF-Generatoren Relais Transformatoren Umrichter Mess-, Steuer- und Regeltechnik Druckmessung Feuchtemessung Gasanalysatoren Gasdruckmessung und Gasregelung Gas-Sicherheits- und Regelgeräte Relais und Schaltungen Temperaturmessung Temperaturregeltechnik Prozessautomatisierung Leittechnik Messtechnik Prozessführungsanlagen Prozessoptimierung Prozesssimulation und Software Sensoren Umwälzeinrichtungen für Ofenatmosphären 16
Prozesswärme MARKT Reinigungs- und Trocknungsanlagen Umwälzeinrichtungen für Ofenatmosphären Wärmedämmung und Feuerfestbau Dichtungen Feuerfeste Steine Feuerfeste Massen Hochtemperaturwolle Isolierungen Zubehörteile für Industrieöfen III. Beratung, Planung, Dienstleistungen, Engineering Beratung für sämtliche Anwendungen der Induktionserwärmung IV. Fachverbände, Hochschulen, Institute, Organisationen V. Messegesellschaften, Aus- und Weiterbildung Subheadings (black type) within a main heading (coloured type) will be included free-of-charge as additional information under your entry. Hasn t found your headings? Please contact Ute Perkovic for more information. Your contact to 's Prozesswärme MARKT: Ute Perkovic Tel. +49 201 82002 24 e-mail: u.perkovic@vulkan-verlag.de and under www.prozesswaerme.net 17
Technical Data Data output: 7 mm printable PDF/X-3 3 mm at all outer edges for bleed advertisement without crop marks in order to avoid bleed within the text we recommend at least 7 mm distance between logo/text and outer edge on www.di-verlag.de/services you can find InDesign joboptions Data transfer: anzeigen@di-verlag.de or ftp://ftp.di-verlag.de User: ftptransfer_anzeigen Passwort: 1c6fU75G Create a folder with information of magazine-title and issue. File-Name as follows: Name of costumer_magazine_issue_format.pdf e.g. Name of customer_hp3_210x297.pdf (Please use abbreviations when naming magazine and issue. If possible, do not use more than 16 characters.) 3 mm Attention: Please provide proofs (according to ISO 12647-1 with Ugra/ FOGRA Media Wedge). Otherwise we cannot guarantee correct colour rendering. Editing layout: We also provide the data in the following file formats. In case this should cause extra costs we will contact you. InDesign CS3 Photoshop CS3 Illustrator CS3 MS Word 2010 Please send the proof to: Vulkan-Verlag GmbH Frau Melanie Zöller Friedrich-Ebert-Straße 55 45127 Essen, Germany 18
Circulation analysis/distribution Circulation control: IVW-audited Circulation analysis: 2 nd. quarter 2016 Print run: 2,500 Actually distributed circulation: 2,211 Commercial sales: 152 Complimentary copies: 22 Occasional recipients 2,059 Fair & exhibition copies Archive/author's copies: 150 Geographical distribution analysis Share of actually distributed circulationc Economic region in % Copies Germany and Western Europe Others 94 6 2,081 130 Totals 100 2,211 Industry/Sector/Distribution channels Recipient groups Share of actually distributed circulation in % copies Operators of thermoprocessing plants and systems 47.2 1,044 Hardening shops and forges 28.5 630 Foundries 10.2 226 Manufacturers of industrial furnaces and industrial heat-treatment systems 8.9 197 Consulting and Service 3.1 67 Trade associations 2.0 45 Others 0.1 2 Totals: 100.0 2,211 19
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MARKT international BASIC Company presence Company address plus contact data and company logo inc. link to Homepage + Keywords for your business fields + Wide-ranging Search function + Mobile display of your entry Combination only Print + Online Included in booking of entry in the heat processing technical journal PREMIUM Enhanced company presence Basic company presence + Company videos + Image galleries + Your company news displayed with your company entry + Mention of your company in our Trade Fair Specials + Featuring of your important personalities + Product catalogues, brochures and advertising materials for download + Google Maps route planner 800.00 * for the year * Value Added Tax (VAT) must be added For more information on request: u.perkovic@vulkan-verlag.de and under www.prozesswaerme.net 25
JOBS international Vacancies: BASIC: Your job ad on www.heat-processing.com inc. your logo BASIC entry CLASSIC + once-only placement in the Prozesswärme NEWS Newsletter CLASSIC entry PREMIUM + once-only placement in the journal elektrowärme international 8 weeks: 500 * 8 weeks: 750 * 8 weeks: 1,750.00 * * Value Added Tax (VAT) must be added. Payment against invoice in all cases Place your job ad here to fill your skilled employee needs systematically! 26
GASWÄRME ELEKTROWÄRME INDUSTRIEOFENBAU WÄRMEBEHANDLUNG WERKSTOFFE ENERGIEEFFIZIENZ MANAGEMENT "Prozesswärme" is the newsletter for the industrial thermoprocessing technology sector. Issued by Vulkan-Verlag, publishers of such leading technical journals as " - elektrowärme international" and "gwi - gaswärme international", "Prozesswärme" reports every month on current events throughout the thermoprocessing technology industry to a readership that includes more than 25,000 key decision-makers. Newsletter 2017 Kontakt: Ute Perkovic Telefon: +49 201 82002-24, E-Mail: u.perkovic@vulkan-verlag.de 27
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PREISLISTE 2017 gültig ab 01.01.2017 1 Circulation: > 25.000 2 Frequency of publication: monthly 3 Printing material deadline: see Schedule below 4 Data format: Banner/Pictures:.jpeg oder.png mind. 72 dpi in RGB-Farben 5 Supply to: u.perkovic@vulkan-verlag.de 6 Publisher: Vulkan-Verlag GmbH Friedrich-Ebert-Straße 55, 45127 Essen, Germany Phone: +49 201 82002 0 Fax: +49 201 82002 40 Shipment date KW 03, 16.-20.01.2017 09.01.2017 KW 08, 20.-24.02.2017 13.02.2017 KW 12, 20.-24.03.2017 13.03.2017 KW 17, 24.-28.04.2017 18.04.2017 KW 20, 15.-19.05.2017 08.05.2017 KW 25, 19.-23.06.2017 12.06.2017 KW 30, 24.-28.07.2017 17.07.2017 KW 33, 14.-18.08.2017 07.08.2017 KW 39, 25.-29.09.2017 18.09.2017 KW 42, 16.-20.10.2017 09.10.2017 KW 47, 20.-24.11.2017 13.11.2017 KW 50, 11.-15.12.2017 04.12.2017 Banner data at the latest by 7 Contacts: Banner Sales: Ute Perkovic Phone +49 201 82002 24 Fax +49 201 82002 40 e-mail Banner Management: Tanja Schneider Phone: +49 89 203 53 66-13 u.perkovic@vulkan-verlag.de Fax: +49 89 203 53 66-66 e-mail: schneider@di-verlag.de 8 Terms of payment All invoices are payable without deduction within 15 days from date of invoice. A 3% discount is deductible in case of payment in advance. The invoice amount is stated on the confirmation of order. Interest will be charged on arrears of payment. Direct debit facilities are availabel. If older invoices are outstanding, discount can not be granted. VAT Nr. DE 811 199 138 Account details: Nassauische Sparkasse Wiesbaden BIC/SWIFT NASSDE55XXX IBAN DE 56 5105 0015 0107 0906 56 USt-IdNr. (VAT): DE 811 199 138 Ad mode Data format Format Price Ad-Banner, Placement 1 jpeg or png 725 x 120 px. 305 Ad-Banner, Placement 2 jpeg or png 725 x 120 px. 255 Ad-Banner, Placement 3 jpeg or png 725 x 120 px. 235 Ad-Banner, Placement 4 jpeg or png 725 x 120 px. 235 Text-Banner MS Word Headline = max. 85 characters Continuous text = max. 450 characters 305, 255 or 235, depending on positioning 30
Technical books 2017 TECHNICAL BOOKS: Titel: Heat and Mass Transfer for High Temperature Processes 1 st. Edition Ed.: Eckehard Specht Due: April 2017 Titel: Praxishandbuch Thermoprozesstechnik, Band I 3. Auflage Ed.: Herbert Pfeifer, Bernhard Nacke, Franz Beneke Titel: Handbuch HärtereiPraxis 1 st. Edition Ed.: Olaf Irretier Due: September 2017 Prozesswärme Stay informed and follow us on Twitter Prozesswärme @Prozesswaerme Tweet der Fachzeitschriften gwi gaswärme international und elektrowärme international (Industrieofenbau, Wärmebehandlung, Energieeffizienz, Management, etc.) Essen www.prozesswaerme.net 31
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