Chillers, air and water cooled, featuring centrifugal compressors with magnetic levitation, from 200 to kw

Transcription

1 Chillers, air and water cooled, featuring centrifugal compressors with magnetic levitation, from 200 to kw

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3 Today's office buildings, hotels, large shopping and leisure complexes, all the most prestigious projects require leading edge solutions to meet extremely demanding challenges: Very strict energy efficiency and sustainability requirements Reduced initial investment and running costs, compliance with increasingly strict energy consumption and environmental impact regulations, are becoming more and more crucial factors not only for real estate valuation, but also in deciding if the project should proceed. Precise attention to comfort and noise emissions To guarantee ideal temperature, humidity and air quality goes together with the need to reduce noise emissions and vibrations. This is a decisive aspect in order to ensure adequate comfort, as well as to comply with noise emission regulations. Complex architecture and logistics The search for prestigious central locations together with regulations and incentives for requalification of urban areas increase the building site logistical complexity and the challenge of moving the system s components. Infrastructure and technical space optimization The real estate value, especially with expensive, prestigious investment in urban environments may be determined also by the quality of the electrical system installed. Hence, choices that do not overload electrical infrastructure are more and more desirable.

4 4 l 5 Resulting from Climaveneta s experience in utilizing magnetic levitation technology in air-conditioning and process cooling industries, TECS Vision 2.0 air and water source chillers are the most efficient and reliable solution available in the market today.

5 ESEER 9,52 for TECS2-W with all the advantages in terms of reliability and technical support, due to Climaveneta s unbeatable knowhow of this technology, for a truly ideal answer to the challenge of the most demanding applications: Ubeatable efficiency at part load At partial load, TECS units are far more efficient than traditional scroll/screw units, with ESEER values up to 60% higher. Running cost savings are evident and consistent, especially when all year round operation is required. Extremely silent operation Thanks to the adoption of the centrifugal compressor with magnetic levitation, and, in air source units, of fans with reduced noise emission, TECS sound power and pressure are the lowest on the market, without peaks in any of the sound frequency spectrum. Vibrations are dramatically reduced as well, with considerable advantages in terms of transmission to the building.. Simplified logistics Turbocor compressors feature an extremely advantageous capacity / weight ratio. The considerable weight reduction allows simplified site operations. Moreover, for water source units this goes together with reduced dimensions, thus enabling also a reduction of plantroom space. Low in rush current A further benefit is the very low inrush current, obtained thanks to the characteristics of the compressor and to the inverter starting. This is a crucial factor, as it allows a more favourable selection of the protection devices to be placed on the power supply between transformer and unit.

6 Centrifugal compressor with magnetic levitation This is a miniaturized, highly innovative compressor, with magnetic levitation device and digital control of the rotor s speed. The efficiencies achieved are far superior to those with traditional volumetric compressors. Inverter controls with inlet guide vanes extend the compressor s operational limit: building requirements are precisely met, even at very low conditions. Part load efficiency Part load efficiency - TECS2-W vs Traditional unit with screw compressors 0 5,97 13,21 ESEER 9,52 +60% ESEER 5,93 TECS2-w 9,84 6,23 Traditional unit with screw compressors 5,65 6,93 25% 18 C 50% 22 C 75% 26 C Operating condition (% load, condenser inlet temp.) 5,26 4,72 100% 30 C A solution that, besides the reduction of weight and dimensions with respect to traditional compressors, permits the compressor to operate completely without oil allowing an improvement of its performance, through the heat exchange process. Vibrations are virtually eliminated together with possible jolts due to inrush current in the start up phase: the unit s wear is minimized. EC Fans On TECS2 units, the technology of EC electronic switching fans is introduced, as standard on SL-CA-E versions and optional on the other models. 94 The superior energy efficiency of the DC brushless motor further improves the chiller s performance, that reaches the highest ESEER level in the market. More advantages are low inrush current and the ability to continuously modulate the rotational speed with an immediate gain in both silence and energy consumption. Sound power level [db(a)] Typical Sound Power Level range for screw compressors unit db(a) XL version TECS Cooling capacity [kw] l 7

7 Efficiency, silent operation and reliability. And also compact dimensions and reduced weight. These are the main features that make TECS units the best result of Climaveneta s know-how. Advantages that result from technological choices, involving each aspect of these units. Flooded evaporator The technology of flooded evaporator, further enhanced the absence of oil in the refrigerant circuits, realises a substantial increase of cooling capacity and an optimization in the compressor s operational mode. The unit s overall efficiency further increases thanks to: compression ratio reduction thanks to a smaller approach theoretic absence of refrigerant superheat at the compressor s suction stage minimization of refrigerant pressure drop on the evaporator s shell side optimization of the exchange surfaces, also at part loads, thanks to the complete control of the refrigerant level in all operating conditions. To comply with the security requirements of the F-gas Regulation (CE 842//2006), factory calibrated leak detection systems are available upon request. Electronic valve The electronic valve is adopted to grant the ideal operation of the evaporator in all conditions. In the water cooled unit TECS2-W, the complete flooding of tubes is granted with a sophisticated detection of the refrigerant level in the heat exchangers, while in the air cooled unit the control is made with a precise measurement of the subcooling in the condenser coil. Total absorbed energy - TECS2 vs Traditional unit with screw compressors 3000 The fast processing of the acquired data allow a quick, fluctuation-free regulation, and therefore a highly accurate adjustment to the swings of load and ambient conditions. Absorbed energy per day [kwh/dd] TECS2 Traditional unit with screw compressors 0 Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.

8 Air cooled units product development the Vision 2.0 has been conceived. The capacity range is now extended up to kw, with 26 sizes featuring unbeatable efficiencies and noise levels. d TECS2 units are available in 2 functions: base and with desuperheater, for applications in which thermal energy is used for auxiliary uses, and in 2 acoustic versions: SL-CA, Super Low Noise, Class A and XL-CA, extra Low Noise, Class A to satisfy even the most demanding noise level targets. High efficiency versions SL-CA-E are available, for an even higher efficiency thanks to the adoption of EC fans and to generous heat exchanger surfaces. Oasis cooling kit. The perfect solution for air-conditioning beyond the units' operating limits. Especially in harsh climates, with requirements of prolonged operation at high ambient air temperatures, units can benefit from devices offering additional cooling whenever outdoor conditions become critical. The ideal solution in these situations is to lower the condenser coil entering air temperature when it becomes too high, causing the condensing temperature to go over the compressors operating limits. This is obtained by Climaveneta with the Oasis kit option. How the Oasis kit works When the condensing conditions reach a pre-defined set point, the controller open a solenoid valve and water is sprayed over a plastic net. The contact between the airflow forced through the wet plastic net, reduces the condenser coil inlet air temperature. This allows: 1 A further extension of the operating limits by 5-6 C, depending on the relative humidity. 2 A benefit for the silenced version (because the high condensing control can be postponed to higher temperature). 3 Increased efficiency of the unit when the system is active. 8 l 9

9 Water cooled units zed a of logistic aspects and plantroom cost per square meter in modern buildings. The adoption of different compressor sizes permits the optimization of the TECS2-W range, which now comprises 20 sizes covering a capacity range between 242 and kw. TECS2-W units are available in 2 functions: base and H, heat pump reversible on hydraulic side and in 2 versions: LC, Low Condensing. For applications in which the water cooled unit is coupled with medium temperature external source, for example groundsource or cooling towers HC, High Condensing. For application in which the unit is expected to work at high condensing levels, as for example in some critical dry-cooler installations or in all situations in which reversibility in heat pump mode is requested. Climaveneta's system advantages vs traditional solutions The Climaveneta Oasis solution offers many advantages even if compared to systems with pressurized atomizers which spray water directly to the coil: No dedicated pumps: the water is taken direktly from tap water. No limescale on the coil: the water is sprayed toward the plastic net, and not toward the coil. Easy application - it's possible to use common supply water, no need for special water treatment. Minimized risk of bacterial population increase: recirculated water loop does not exist; water immediately evaporates when sprayed on the net. 46 C 40 C 40 C 46 C Optimal control of water consumption: thanks to effective spray regulation.

10 VISION TECS2 2.0 Air cooled unit with magnetic levitation centrifugal compressors. From 220 to kw. TECS2 'Class A' Version Compressors number SL-CA / XL-CA Circuits number SL-CA / XL-CA Cooling performances Cooling capacity (1) kw SL-CA XL-CA Total absorbed power (1) kw SL-CA XL-CA EER (1) SL-CA XL-CA ESEER SL-CA XL-CA Sound power level (2) db(a) SL-CA XL-CA Maximum external air temperature C Dimensions A mm SL-CA XL-CA B mm SL-CA / XL-CA H mm SL-CA / XL-CA ,2 81, ,5 79, ,31 3,18 3,13 3,20 3,16 3,30 3,13 3,30 3,15 3,15 3,15 3,17 3,17 3,21 3,19 3,12 3,19 3,17 3,35 3,11 3,27 3,13 3,11 3,12 3,17 3,11 4,77 4,87 4,72 5,07 5,17 5,09 5,04 5,16 5,12 5,13 5,09 5,06 5,14 4,75 4,99 4,84 5,19 5,23 5,17 5,19 5,24 5,24 5,30 5,24 5,19 5, TECS2 'Class A' Enhanced Version Compressors number SL-CA-E Circuits number SL-CA-E Cooling performances Cooling capacity (1) kw SL-CA-E Total absorbed power (1) kw SL-CA-E EER (1) SL-CA-E ESEER SL-CA-E Sound power level (2) db(a) SL-CA-E Maximum external air temperature C Dimensions A mm SL-CA-E B mm SL-CA-E H mm SL-CA-E ,1 81, ,41 3,50 3,40 3,41 3,41 3,50 3,45 3,41 3,35 3,48 3,42 3,50 3,46 5,29 5,52 5,43 5,79 5,71 5,64 5,77 5,77 5,62 5,79 5,71 5,87 5, Note (1) Evaporator water (in/out) = 12/7 C; condenser air (in) = 35 C (2) Sound power based on measurements taken in accordance with standard ISO 3744 and Eurovent Oasis kit performance The table on the right shows the effects of Oasis kit in relation to outside air temperature and relative humidity. It is clear that, the higher the air temperature and lower the air humidity, the higher the system s effectiveness: in these conditions infact, as higher waterflow is sprayed to the net, and most of it evaporate thanks to the energy given by the airflow through the net, water evaporates and air is cooled. Water consumption comparison. Another point to highlight is the water consumption, which is less than 30% of that requested by a cooling tower coupled to a water cooled unit of the same cooling capacity. 150 l/h Adiabatic cooling kit coupled with an air cooled chiller (260 12/7 C, 35 C, 50% RH) 500 l/h Cooling tower coupled with a water cooled chiller (260 12/7 C, 30/35 C, 50% RH) 10 l 11

11 VISION TECS2-w 2.0 Water cooled unit with magnetic levitation centrifugal compressors. From 241 to kw. TECS-HF/HC Version Compressors number HC Circuits number HC Cooling performances Cooling capacity (1) kw HC Total absorbed power (1) kw HC EER (1) HC ESEER HC Heating performances Heating capacity (2) kw HC/H Total absorbed power (2) kw HC/H COP (2) HC/H Sound power level (3) db(a) HC Maximum condenser outlet temperature C HC Dimensions A mm HC B mm HC H mm HC ,0 57,0 69,2 78,9 94, ,24 5,15 5,19 5,13 5,24 5,16 5,14 5,14 5,15 5,15 5,12 5,23 5,13 8,70 8,83 8,84 8,95 9,08 9,16 9,04 9,21 9,13 8,96 9,12 9,16 9, ,00 5,01 4,95 4,93 5,01 5,02 4,92 4,94 5,02 4,91 4,92 4,96 4, TECS-HF/LC Version Compressors number LC Circuits number LC Cooling performances Cooling capacity (1) kw LC Total absorbed power (1) kw LC EER (1) LC ESEER LC Sound power level (3) db(a) LC Maximum condenser outlet temperature C LC Dimensions A mm LC B mm LC H mm LC , ,24 5,12 5,24 5,27 5,22 5,26 5,23 9,37 9,19 9,45 9,43 9,41 9,52 9, Note (1) Evaporator water (in/out) = 12/7 C; condenser water (in/out) = 30/35 C (2) Condenser water (in/out) = 40/45 C; evaporator water (in/out) = 14/7 C (3) Sound power based on measurements taken in accordance with standard ISO 3744 and Eurovent Impact of Oasis on the condensation and operational limits Main accessories Relative Humidity outdoor air [%] Ambient air temperature, dry bulb [ C] Delta T inlet condenser coil temperature [ C] 6 6,5 7,5 5 5,5 6 4, ,5 4 4, Water consumption for 1000m 3 /h air flow [l/h] 5,1 5,6 6,1 4,0 4,6 5,2 3,3 3,7 4,1 2,3 2,6 2,8 1,4 1,6 1,7 Several serial card for protocols ModBus, Bacnet, Echelon lontalk for supervisory systems both in BMS resources and Climaveneta devices (FWS3000, Manager3000) Remote keyboard; it offers access up to 10 units from a single point, with the possibility to set the main plant variables DEMETRA system to have an hourly complete report of the main variables: temperatures, energy given and absorbed Integrated hydronic group, with the possibility to select different pumps. Available also as VPF (Variable Primary Flow) EC fans (already standard in TECS2/SL-CA-E versions) (only for TECS2) Acoustical enclosure base and plus for a sound power level reduction of 14 and 18 db(a) respectively (only for TECS-HF) Leak detector; devices to detect refrigerant leakage in close ambient

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13 Willis Building London - United Kingdom Designed by: Foster & Partners Project The latest striking addition to the London sky-line is the iconic Willis building. Designed by Foster and Partners, it is the City of London s fourth highest skyscraper and will provide high quality contemporary office accommodation for Willis Group, the world's third largest insurance broker. Challenge This masterpiece of architecture comprising two adjoining structures of 10 and 28 storeys has already achieved an excellent environmental assessment award, with a 10 out of 10 BREEAM rating. To achieve this standard required an air conditioning system designed to the most stringent requirements. The system, besides ensuring highest energy efficiency, also ensures lowest noise emissions, compact sizing of transformer and power supply, and the most favourable selection of the protection devices between these devices and the unit. Solution For the consulting engineer, RPP, the most suitable choice was based on compact TECS mini centrifugal air cooled chillers, 5 for the Tower and 2 for the adjoining Fenchurch Avenue Building. They allow simplified logistics, unbeatable energy efficiency at part loads, lowest inrush current and extremely quiet operation. Hydronic fan coils in the false ceilings ensure optimum comfort conditions with minimal aesthetic impact to the office interiors. The consultant's opinion Mr. T Maynard "Choosing Climaveneta chillers has proved to be an investment in reliability and efficiency, significantly contributing to the project s success. Their adoption provides unbeatable efficiency, which was among the main system requirements, whereas the comprehensive support we received from the company, enabled us to develop with the architect an air conditioning system that is a benchmark for efficiency and optimized investments".

14 Twickenham Stadium London - United Kingdom Designed by: Ward McHugh ect oric and iconic world class rugby stadium and now also a top concert venue and a leading eisure and business destination, Twickenham Stadium is the home of England Rugby l Union and the largest rugby stadium in the world, with a capacity of 82,000 seats. allenge cent South Stand redevelopment, completed by the beginning of the Stadium s 100th, comprises 25 conference rooms, 4 suites of various capacities up to 800 seats and a ar hotel, offering integrated conference and exhibition space, 365 days a year. All these s required an air conditioning solution providing perfect comfort with highest possible efficiency and complete reliability. Solution For Twickenham Stadium s best comfort, the consultant Cundall Johnston & Partners LLP, selected 7 Climaveneta super compact TECS air cooled chillers. Featuring highest part load efficiency and extremely silent operation, they achieve excellent energy and operational cost savings. Moreover the very low noise emissions, extremely low starting current and compact size of the units proved to be the ideal choice, assuring simplified logistics and extremely silent operation. The consultant's opinion Mr. A Centola Climaveneta chillers provided the necessary energy and acoustic performance. At the same time the Company has an enviable reputation for efficiency and reliability and the widest experience in sport applications and in the use of magnetic levitation technology. Having already carried out many successful projects with them, we had no hesitation to select them also for the Twickenham Stadium. 14 l 15

15 Abbey (Santander) Bank Leading UK financial services company with 1300 branches in the whole country Project In 2007 Abbey (Santander) Bank launched an ambitious programme to replace existing old and expensive-to-run chillers with more efficient units. A project aimed to reduce expenses as well as assisting the environmental impact of the financial group operations through increased energy savings for its air-conditioning systems. Challenge Involving the replacement of a large amount of units over several years, the selection of the new units meant not only efficiency and robustness of the solution, but also reliability of the partner and quality of service. Given the great variety of installations and systems, also the range extension and the flexibility of the offer were crucial in order to approach the project in a rational and effective way. Solution After thorough examination of a number of alternatives, Abbey consultants chose Climaveneta TECS units for all projects where chillers over 350kW were required. Utilising compressors with magnetic levitation, these units guarantee highest efficiency, without equal compared with any other technology. On the other hand Climaveneta expertise with TECS chillers, proven by over 500 units installed all over the world was the best guarantee of the robustness required. Air and water source, ranging from 200 to 2000kW, these units ensured an ideal flexibility, enhanced also by their compact dimensions. Numbers are the best proof of these advantages, with 13 units installed since 2007 for more than kW total capacity. The consultant s opinion Mr. John Samson When we analysed the available solutions, Powermaster - Climaveneta distributor for the U.K.- invited us to compare TECS units performance with those of traditional screw chillers. Results were striking. This, together with the reliability ensured by Climaveneta's experience with these units and by the high quality service performed by Powermaster, left us in no doubt about choosing them as partners for this project.

16 IKEA Rimini store Rimini - Italy Project Care for environment and sustainability are among IKEA core values. The desire to minimise the carbon footprint throughout the whole value chain is reflected also by the continuous research of high efficiency innovative solutions for its stores. Challenge Envisioned by an uncompromised approach to energy efficiency and sustainability achieved by blending cutting edge technologies and renewable resources in an unprecedented system solution, the air conditioning and heating system of the Rimini IKEA store has been, since the very beginning, a point of reference both for retail solutions and for the air conditioning systems. This geothermal application couples water cooled units with a ground source system. It meets the difficult challenge of sizing geothermal probes in order to optimize and balance the heat exchange both during winter and summer mode, employing at the same time the best performing units on the market in order to maximize global performances both in heating and cooling mode. Solution For the building services engineer of the IKEA Group, Mr. Giuseppini, to choose Climaveneta as a partner was the first step in order to guarantee the success of this project. The system is based on 2 high efficiency water cooled reversible TECS units. Utilizing geothermal probes to absorb heat during winter and reject it during summer, the operating conditions are always optimized and the TECS efficiency is at its peak with EER up to 15,0. The energy saving is further enhanced thanks to the variable flow pumps precise management, which has been integrated into Climaveneta s solution. Studio Tecnico Impianti Ing. Sergio Giuseppini The consultant's opinion Mr. S. Giuseppini Since the project required a highly innovative solution, we needed not only reliability and experience but the best possible know how in utilizing all the benefits of magnetic levitation technology in units providing both heating and cooling within a very complex system. Climaveneta has been the ideal partner, both for its expertise with these applications as well as for the unchallenged capability to develop custom made solutions and for the high pre and after sales service level provided. 16 l 17

17 Kings Place London - United Kingdom Designed by: Dixon Jones Project Designed by architects Dixon-Jones, Kings Place brings together in an iconic environmentally sustainable mixed-use building a major arts venue hub, elegantly situated bars and dining areas, an excellent conference and events centre, and a Grade A office complex. Challenge Being the first modern recital hall built in London, Kings Place was featured by extremely difficult design challenges. As a major concert and music hub, it required perfect noise insulation both from outside as well as between different halls, and perfect acoustics inside each room. Building regulations limited at 7 storeys the height of the building, thus imposing great focus on space optimization, to be combined with highest sustainability and refined aesthetics. These challenges were reflected by extremely demanding air conditioning requirements. Solution Climaveneta super low noise water cooled TECS chillers were the ideal solution for Arup Consultants in charge of the project. Their compact dimensions perfectly suited the installation requirements and their high efficiency strongly contributed to enhance the BREEAM rating of the building. The noise levels of the mini centrifugal compressors with magnetic levitations, together with the extended Climaveneta experience in theatre applications, assured perfect comfort with no compromises on the acoustics. The consultant's opinion Mr. Nick Merridew Technical systems were crucial for this project's success. We knew that Climaveneta was able to ensure the reliable tailor-made solution we were looking for, thanks to their know-how in mastering magnetic levitation technology and their experience with theatres and concert halls. Moreover the extended factory witness testing after unit manufacture and thorough pre and after sales support they offer, have been of great help in identifying the ideal solution for this complex.

18 Sanpaolo IMI Turin - Italy Hydronic system, 2000kW total capacity provided by 2 TECS-F Sieeb University Beijin - China Hydronic system, 1200kW total capacity provided by 2 FOCS-W and 1 TECS University of Stellenbosch Hydronic system kW total capacity provided by 1 TECS and 1 FOCS University of Exeter Exeter - U.K. Hydronic system - 200kW total capacity provided by 1 air cooled extra low noise TECS-F/XL Glaxo Smith Kline Essex - U.K. Hydronic system kw total capacity provided by 2 TECS-HF Unilever Headquarters Hamburg - Germany Hydronic system, 3000kW total capacity Provided by 2 TECS water cooled chillers 18 l 19

19 Each one featured by different usage, location and system requirements. All of them sharing the highest efficiency, lowest noise emissions and complete reliability of Climaveneta's unique experience and know how. BARCLAYS Several server rooms and data centres in the whole United Kingdom For over kW of total capacity provided by several TECS and SRAT units LITOPAT Graphic industries Verona - Italy Hydronic System, 2500 kw total capacity provided by 2 high efficiency TECS units Aspen Pharmaceutical Porth Elisabeth - South Africa 6 TECS water cooled chillers Migros Shopping Centre Langendorf - Switzerland Hydronic system 700kW total capacity Provided by 2 TECS water cooled chillers European Parliament Strasbourg - France Geothermal applic ation kW total capacity provided by 3 TECS water cooled chillers. City University London - U.K. Hydronic system - 500kW total capacity provided by 1 air cooled super low noise TECS

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