YUJING LI, Ph.D. DIV. OF BUILDING MATERIALS FACULTY OF ENGINEERING (LTH), LUND UNIVERSITY, SWEDEN MARCH 25 TH 2014, GÖTEBORG
|
|
- Stephany Newman
- 5 years ago
- Views:
Transcription
1 46 SYSTEM MODELING OF MOULD GROWTH ON BUILDING MATERIALS YUJING LI, Ph.D. DIV. OF BUILDING MATERIALS FACULTY OF ENGINEERING (LTH), LUND UNIVERSITY, SWEDEN MARCH 5 TH 4, GÖTEBORG Challenge... varje har en kritisk fuktnivå som inte får överskridas och om den inte kan redovisas så får ets relativa fuktighet inte överstiga 75 %... BBR (Boverket)
2 46 Questions Only critical level matters? RH RH & temperature Exposure time How long? Constant level vs. Changing conditions Long term prediction? Practical tool? Previous models What s missing The mechanism of the growth The mechanism of the decaying Other factors, e.g., the oxygen level etc. The connections between the biology and the Etc.
3 46 Major challenge Modelling HOW MOULD grown on building MATERIALS Fundamentals behind: How does mould grow? Material
4 46 Fundamentals behind: How does mould grow Water Organic compounds in the Fundalmentals behind: How does mould grow Water Oxygen available Organic compounds in the 4
5 46 A Causal Loop Diagram (CLD) Water? Oxygen available Organic compounds in the A Causal Loop Diagram (CLD) Desorption Water activity in the Relative humidity in the air Absorption Oxygen available Organic compounds in the 5
6 46 A Causal Loop Diagram (CLD) Desorption Water activity in the Relative humidity in the air Absorption Oxygen available Organic compounds in the A Causal Loop Diagram (CLD) Desorption Water activity in the Relative humidity in the air Absorption Enzyme activity Enzyme destruction Oxygen available Organic compounds in the Aging 6
7 46 Modelling... Can we put ALL together? System analysis & System dynamic modelling Building Biology Group, LTH, Lund University Applied Systems Analysis & System Dynamics (ASASD) Group, Lund University Desorption Water activity in the Relative humidity in the air Absorption Enzyme activity Enzyme destruction Oxygen available Organic compounds in the Aging 7
8 46 Materal s moisture simulation Desorption and Adsorption,,, m wv,s : water vapour mass flow rate (kg/ms) h D : diffusion coefficient R: gas constant T: temperature P wv,w : water vapour pressure of the wood P wv,a : water vapour pressure in the air Moisture content / % absorption desorption Relative humidity / % The sorption isotherm of wood (air dried spruce sapwood). Desorption Water activity in the Relative humidity in the air Absorption Enzyme activity Enzyme destruction Oxygen available Organic compounds in the Aging 8
9 46 Relative humidity and temperature, Simplified psychrometric chart for temperatures and relative humidities. Source: University of Nebraska 8, Desorption Water activity in the Relative humidity in the air Absorption Enzyme activity Enzyme destruction Oxygen available Organic compounds in the Aging 9
10 46 factors Fig.. The factor by relative humidity on mould activity. (Ayerst 969) Fig. 4. The temperature factor (Ayerst 969 Desorption Water activity in the Relative humidity in the air Absorption Enzyme activity Enzyme destruction Oxygen available Organic compounds in the Aging
11 46 Modelling: moisture properties RH difference water dif fuse in Wood coeff icient diffuse coefficient Temperautre Water in wood Dif f usion in to wood Water in air Diff use in out Water in Water out water consumed Diff usion out Initial water Mass of wood WC in wood RH in wood Wood dif fuse coeff icient RH dif ference water v apour content v olume of air RH in air Ambient oxygen lev el Saturated water v apour content Temperautre Air Pressure Saturated Water v apour pressure model of water vapour exchange between wood and air, STELLATM V 9. (isee systems, inc.) Modelling: mould growing behaviour model of mould growth with influencing factors, STELLATM V 9. (isee systems, inc.)
12 46 Some simulaiton results start with... Mould grown on wood in a closed environment Air Water Results: Scenario drying Initial conditions: RH in the air: 7% Water content in wood:. : C (constant) : 4: : 4: : RH in air RH in wood Mould sy nthesis 4: Mould biomass Trend 4 Active mould biomass 4 4 RH in wood : 4: Page Hours 4 den 6 jul Time Fig. 5. The development of mould growth on wood during wood drying
13 46 Results: Scenario drying Initial conditions: RH in the air: 7% Water content in wood:. : C (constant) : : : Water in air Water in wood Mould biomass Trend Water in air Active mould biomass Water in wood : Page Hours den 6 jul Untitled Time Fig. 5. The development of mould growth with moisture content changes Initial conditions: Scenario wetting RH in the air: 9% Water content in wood:.6 : C (constant) : 4: : 4: : RH in air RH in wood Mould sy nthesis 4: Mould biomass Trend 4 RH in wood 4 Active mould biomass : 4 4 4: Page Hours 5 den 6 jul Time Fig. 6. The development of mould growth on wood during wood wetting
14 46 Initial conditions: Scenario fluctuating temperature RH in the air: 7% Water content in the wood:. varying between C (noon time) and C (night) : 4: 5: : 4: 5: : RH in air RH in wood Mould sy nthesis 4: Mould biomass 5: Temperautre Trend 5 RH in air : 4: 5: Page Hours 4 den jun Time Fig. 5. The development of mould synthesis with varying temperature changes Scenario fluctuating temperature Initial conditions: RH in the air: 7% Water content in the wood:. varying between C (noon time) and C (night) : : : Mould biomass Water in air Water in wood Trend Active mould biomass : Page Hours 4 den jun Time Fig. 6. The development of mould biomass with varying temperature changes 4
15 46 : Water in air Water in wood Mould biomass : Mould biomass Water in air Water in wood : : : : : Page : Hours den Page 6 jul Initial conditions: Untitled RH in the air: 7% Water content in wood:. : C (constant) Hours 4 jun den Initial conditions: RH in the air: 7% Water content in the wood:. varying between C (noon time) and C (night) Initial conditions: RH in the air: 65% Water content in the wood:.6 varying between C (noon time) and C (night) Scenario 4 longer period 5
16 46 month Longer period 6 month 6
17 46 Even longer ~ month Starting with: RH in the air: 65% ºC Water content in the wood:.6 fluctuating daily ºC ºC months 6 months months 7
18 46 Conclusion The temperature variation has significant impact on mould growth on s it is called a conceptual model for the moment It is possible to combine the properties and the mould behaviour into modelling A new MModel project (Comparing to Johansson et. al. ) 8
19 46 The work flow of the new Mmodel Modelling Model validation Practical tool Data collection Building physics & climate data Long term prediction Acknowledgement 9
20 46 Thank you for your attention! Fundamental reasons behind Physical parameters (temp. RH, etc.) Materials Mould on
21 46
OF BUILDING MATERIALS FACULTY OF ENGINEERING (LTH), LUND UNIVERSITY, SWEDEN
SYSTEM MODELING OF MOULD GROWTH ON BUILDING MATERIALS YUJING LI, Ph.D. DIV. OF BUILDING MATERIALS FACULTY OF ENGINEERING (LTH), LUND UNIVERSITY, SWEDEN Major challenge Modelling HOW MOULD grown on building
More informationDynamic Simulation of a CFB Boiler System
71th IEA-FBC Technical Meeting Dynamic Simulation of a CFB Boiler System 2015. 11. 05, Seoul, Korea Sang Min CHOI Thermal Engineering Lab Thermal Engineering Laboratory KAIST Introduction Dynamic Performance
More informationAnalysis of Energy Consumption for Biomass Drying Process
Environment. Technology. Resources, Rezekne, Latvia Proceedings of the 10 th International Scientific and Practical Conference. Volume II, 317-322 Analysis of Energy Consumption for Biomass Drying Process
More informationPERFORMANCE ANALYSIS OF VAPOUR COMPRESSION THERMOELECTRIC REFRIGERATION SYSTEM WITH NOZZLE AND DIFFUSER THROUGH INCORPORATION OF PHASE CHANGE MATERIAL
International Journal of Technical Innovation in Modern Engineering & Science (IJTIMES) Impact Factor: 3.45 (SJIF-2015), e-issn: 2455-2585 Volume 3, Issue 10, October-2017 PERFORMANCE ANALYSIS OF VAPOUR
More informationEXPERIMENTAL AND CFD STUDIES ON SURFACE CONDENSATION
Eighth International IBPSA Conference Eindhoven, Netherlands August 11-14, 2003 EXPERIMENTAL AND CFD STUDIES ON SURFACE CONDENSATION Liu Jing 1, Yoshihiro Aizawa 2, Hiroshi Yoshino 3 1 School of Municipal
More informationThe Use Of Attic Space For Cooling and Dehumidification
Purdue University Purdue e-pubs International Refrigeration and Air Conditioning Conference School of Mechanical Engineering 2002 The Use Of Attic Space For Cooling and Dehumidification H. F. Abaza Virginia
More informationDesiccant Cooling with Solar Energy
Desiccant Cooling with Solar Energy Gerrit Höfker 1,2, Ursula Eicker 2, Kevin Lomas 1, Herbert Eppel 1 1 De Montfort University Leicester, Institute of Energy and Sustainable Development 2 Hochschule für
More informationdeveloped, and parametric studies are conducted with the model. Based on the parameter study results, a dehumidification performance diagram is propos
Evaluation of A Plate Desiccant Outdoor Air-conditioning System Utilizing Cogenerated Hot Water Using A Numerical Model T. Baba 1, B. Park 1 1, *1, and T. Nagai 1 Department of Architecture, Tokyo University
More informationAdsorption refrigeration system using waste heat
Adsorption refrigeration system using waste heat 1 RISHI SREEKUMAR, 2 SANJEEV SINGH, 3 HIMANSHU SHEKHAR, 4 RAUSHAN KUMAR, 5 Dr. R. S. BINDU 1,2,3,4 BE Students, 5 Professor Mechanical Engineering Department
More informationNumerical Studies On The Performance Of Methanol Based Air To Air Heat Pipe Heat Exchanger
International Journal of ChemTech Research CODEN( USA) IJCRGG ISSN 0974-4290 Vol.5, No.2, pp 925-934, April-June 2013 ICGSEE-2013[14th 16th March 2013] International Conference on Global Scenario in Environment
More informationMoisture and Buildings. Moisture Damage
Moisture and Buildings Joseph Lstiburek, Ph.D., P.Eng John Straube, Ph.D., P.Eng Air-Vapor Moisture Physics Moisture is involved in almost all building envelope performance problems In-service... Durability
More informationSOLAR PARABOLIC COLLECTOR ASSISTED EVAPORATIVE COOLING SYSTEM
2 nd International Conference on Energy Systems and Technologies 18 21 Feb. 2013, Cairo, Egypt SOLAR PARABOLIC COLLECTOR ASSISTED EVAPORATIVE COOLING SYSTEM Tanuja Sheorey 1 +, Vandana Arora 1 1 PDPM Indian
More informationMathematical Simulation of Longan Fruit Drying
Mathematical Simulation of Longan Fruit Drying Aree Achariyaviriya, Somchart Soponronnarit and Jirawan Tiansuwan ABSTRACT The objectives of this study were to develop a mathematical model and to simulate
More informationEXPERIMENTAL INVESTIGATION OF COMPARISION OF AIR COOLED AND WATER COOLED CONDENSER ATTACHED WITH COOLING TOWER
EXPERIMENTAL INVESTIGATION OF COMPARISION OF AIR COOLED AND WATER COOLED CONDENSER ATTACHED WITH COOLING TOWER Gourav Roy; Taliv Hussain; Rahul Wandra Department of Mechanical Engineering, Lovely Professional
More informationSTACK EFFECT IN LIGHT WELL OF HIGH RISE APARTMENT BUILDING
STACK EFFECT IN LIGHT WELL OF HIGH RISE APARTMENT BUILDING H. Kotani, R. Satoh, T. Yamanaka Dept. of Architectural Engineering, School of Engineering, Osaka University, Osaka, Japan ABSTRACT The purpose
More informationEffect of Operating Parameters on the Performance of Direct Evaporative Cooler
International Journal of Thermal Technologies E-ISSN 2277 4114 2015 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijtt/ Research Article Effect of Operating Parameters on the
More informationAssessing condensation problems in hydrophobic mineral fiber
WUFI How to Assessing condensation problems in hydrophobic mineral fiber Issued: 2017-07 Contents 1. Basics 2. Proceeding in WUFI 3. Example 4. Collection of critical values 2 Basics Glaser method The
More informationLesson 25 Analysis Of Complete Vapour Compression Refrigeration Systems
Lesson 25 Analysis Of Complete Vapour Compression Refrigeration Systems Version 1 ME, IIT Kharagpur 1 The specific objectives of this lecture are to: 1. Importance of complete vapour compression refrigeration
More informationFeasibility study of the passive solar room dehumidifying system using the sorption property of a wooden attic space through field measurement
International Conference Passive and Low Energy Cooling 651 Feasibility study of the passive solar room dehumidifying system using the sorption property of a wooden attic space through field measurement
More informationPRODUCING COOLING FROM SOLAR ENERGY BY USING ADSORPTION CYCLE WITH ACTIVATED CARBON AND METHANOL PAIR
PRODUCING COOLING FROM SOLAR ENERGY BY USING ADSORPTION CYCLE WITH ACTIVATED CARBON AND METHANOL PAIR Himsar Ambarita Mechanical Engineering Department, Engineering Faculty, University of Sumatera Utara
More informationNumerical study of heat pipe application in heat recovery systems
Numerical study of heat pipe application in heat recovery systems *Song Lin, John Broadbent, Ryan McGlen Thermacore Europe, 12 Wansbeck Business Park Ashington, Northumberland NE3 QW, UK E-mail: song.lin@thermacore.com
More informationANALYSIS OF DESICCANT COOLING SYSTEM
Int. J. Mech. Eng. & Rob. Res. 2012 Gaurav Pundir and S N Mishra, 2012 Research Paper ISSN 2278 0149 www.ijmerr.com Vol. 1, No. 3, October 2012 2012 IJMERR. All Rights Reserved ANALYSIS OF DESICCANT COOLING
More informationTHERMAL PERFORMANCE ASSESSMENT OF GREENHOUSE SOLAR DRYER UNDER PASSIVE MODE
THERMAL PERFORMANCE ASSESSMENT OF GREENHOUSE SOLAR DRYER UNDER PASSIVE MODE Pushpendra Singh 1, Vipin Shrivastava 2 1,2 Mechanical Engineering Department, Lakshmi Narain College of Technology (India) ABSTRACT
More informationGreen Roofs Impact on Buildings Cooling Load
Purdue University Purdue e-pubs International High Performance Buildings Conference School of Mechanical Engineering 2012 Green Roofs Impact on Buildings Cooling Load Karim Besbes assaad.zoughaib@mines-paristech.fr
More informationSubscripts 1-4 States of the given system Comp Compressor Cond Condenser E Evaporator vol Volumetric G Gas L Liquid
Simulation Analysis of Compression Refrigeration Cycle with Different Refrigerants P.Thangavel, Dr.P.Somasundaram, T.Sivakumar, C.Selva Kumar, G.Vetriselvan Abstract --- In this analysis, the performance
More informationA/C Cooling Load calculation and measurement
Testo Inc. 40 White Lake Rd. Sparta NJ 07871 (800) 227-0729 A/C Cooling Load calculation and measurement When we talk about sizing an air conditioning appliance (tons of cooling, BTU/h or KW), we are specifying
More informationPerformance Comparison of Ejector Expansion Refrigeration Cycle with Throttled Expansion Cycle Using R-170 as Refrigerant
International Journal of Scientific and Research Publications, Volume 4, Issue 7, July 2014 1 Performance Comparison of Ejector Expansion Refrigeration Cycle with Throttled Expansion Cycle Using R-170
More informationA new method for preventing air-source heat pumps and refrigerators from frosting
12 th IEA Heat Pump Conference 2017 A new method for preventing air-source heat pumps and refrigerators from frosting Central Research Institute of Electric Power Industry L. Zhang, T. Fujinawa, K. Hashimoto*,
More informationDrying principles and general considerations
Drying principles and general considerations Drying Mechanisms In the process of drying heat is necessary to evaporate moisture from the grain and a flow of air is needed to carry away the evaporated moisture.
More informationannouncements 4/10/08
Psychrometrics & Design Strategies ARCH 331/431 Spring 2008 Lecture 4 announcements 4/10/08 course website: http://courses.washington.edu/arch3431/index.shtml Course materials (readings, assignments, lectures,
More informationSTUDY ON TEMPERATURE, RH AND AIR FLOW VELOCITY DISTRIBUTION INSIDE THE GREENHOUSE EFFECT SOLAR DRYER
STUDY ON TEMPERATURE, RH AND AIR FLOW VELOCITY DISTRIBUTION INSIDE THE GREENHOUSE EFFECT SOLAR DRYER WULANDANI, D., K. ABDULLAH, E. HARTULISTIYOSO Department of Agricultural Engineering, Faculty of Agricultural
More informationEXERGY ANALYSIS OF DOMESTIC REFRIGERATOR WITH DIFFERENT REFRIGERANTS
International Journal of Scientific & Engineering Research Volume 3, Issue 7, July-2012 1 EXERGY ANALYSIS OF DOMESTIC REFRIGERATOR WITH DIFFERENT REFRIGERANTS Rahul ukey, Sharad chaudhary Abstract Electricity
More informationMoisture and Buildings. Moisture Damage
Moisture and Buildings Joseph Lstiburek, Ph.D., P.Eng John Straube, Ph.D., P.Eng Building Science Moisture Moisture is involved in almost all building envelope performance problems In-service... Durability
More informationFalling Film Heat Exchangers for Solar Water Heaters
Y.C., G.L. Morrison and M. Behnia School of Mechanical and Manufacturing Engineering University of New South Wales Sydney 2052 AUSTRALIA E-mail: yens@student.unsw.edu.au Abstract The characteristics of
More informationLast exam / sista tent
Värme- och strömningsteknik Thermal and flow engineering Refrigeration Kylteknik Ron Zevenhoven Exam 24-2-2017 4 questions, max. points = 8 + 8 + 6 + 8 = 30 All support material is allowed except for telecommunication
More informationHygrometry. The art or science of humidity observation
Hygrometry The art or science of humidity observation Humidity Under normal atmospheric conditions, the amount of water vapor any sample of air can hold depends primarily on its temperature Various terms
More informationK.F. Fong *, C.K. Lee, T.T. Chow
Investigation on radiative load ratio of chilled beams on performances of solar hybrid adsorption refrigeration system for radiant cooling in subtropical city K.F. Fong *, C.K. Lee, T.T. Chow Building
More informationNUMERICAL SIMULATION OF VAPOUR COMPRESSION REFRIGERATION SYSTEM USING REFRIGERANT R152A, R404A AND R600A
ISSN: 2250-0138 (Online) NUMERICAL SIMULATION OF VAPOUR COMPRESSION REFRIGERATION SYSTEM USING REFRIGERANT R152A, R404A AND R600A RANENDRA ROY a1, MADHU SRUTHI EMANI b AND BIJAN KUMAR MANDAL c abc Department
More informationNew Insights into Natural Aeration Grain Drying Systems
New Insights into Natural Aeration Grain Drying Systems IHARF Winter Seminar Melville Communiplex February 1, 2012 11:00 AM Ron Palmer P.Eng P.Eng.. Ph.D. Bin #9 Bin #10 Objective To build a fan controller
More informationPERFORMANCE OF SOLID DESICCANT COOLING WITH SOLAR ENERGY IN HOT AND HUMID CLIMATE
Journal of Sustainability Science and Management Volume 9 Number 1, June 2014: 150-155 ISSN: 1823-8556 Penerbit UMT PERFORMANCE OF SOLID DESICCANT COOLING WITH SOLAR ENERGY IN HOT AND HUMID CLIMATE ARFIDIAN
More informationEffect of Exhaust Gas Temperature on the Performance of Automobile Adsorption Air-Conditioner
American Journal of Engineering and Applied Sciences Original Research Paper Effect of Exhaust Gas Temperature on the Performance of Automobile Adsorption Air-Conditioner 1 Abdul Hadi N. Khalifa, 1 Ali
More information4th International Conference on Sensors, Measurement and Intelligent Materials (ICSMIM 2015)
4th International Conference on Sensors, Measurement and Intelligent Materials (ICSMIM 2015) Multi-stage Series Heat Pump Drying System with Dehumidification Simulation and Experiment Verification Chao
More informationINDOOR HUMAN THERMAL COMFORT OPTIMAL CONTROL WITH DESICCANT WHEEL COOLING SYSTEM
Available online at www.sciencedirect.com ScienceDirect Energy Procedia 61 (2014 ) 882 886 The 6 th International Conference on Applied Energy ICAE2014 INDOOR HUMAN THERMAL COMFORT OPTIMAL CONTROL WITH
More informationExperimental investigation of Hybrid Nanofluid on wickless heat pipe heat exchanger thermal performance
Experimental investigation of Hybrid Nanofluid on wickless heat pipe heat exchanger thermal performance #1 Jaydev S. Bade, #2 Dr. Nitin U. Korde 1 Department of Mechanical Engineering, Savitribai Phule
More informationClemens Felsmann 1, Jean Lebrun 2, Vincent Lemort 2 and Aad Wijsman 3 ABSTRACT INTRODUCTION METHODOLOGY
Eleventh International IBPSA Conference Glasgow, Scotland July 27-30, 2009 TESTING AND VALIDATION OF SIMULATION TOOLS OF HVAC MECHANICAL EQUIPMENT INCLUDING THEIR CONTROL STRATEGIES. PART II: VALIDATION
More informationEFFECTS OF AIR VELOCITY AND CLOTHING COMBINATION ON HEATING EFFICIENCY OF AN ELECTRICALLY HEATED VEST (EHV): A PILOT STUDY
EFFECTS OF AIR VELOCITY AND CLOTHING COMBINATION ON HEATING EFFICIENCY OF AN ELECTRICALLY HEATED VEST (EHV): A PILOT STUDY Faming Wang, Chuansi Gao, and Ingvar Holmér Thermal Environment Laboratory, Division
More informationMULTIPLE BED REGENERATIVE ADSORPTION CYCLE USING THE MONOLITHIC CARBON AMMONIA PAIR
MULTIPLE BED REGENERATIVE ADSORPTION CYCLE USING THE MONOLITHIC CARBON AMMONIA PAIR Dr. R.E. Critoph University of Warwick, School of Engineering, Coventry CV4 7AL, UK ABSTRACT A refrigeration / heat-pump
More informationLOW ENERGY CLIMATE CONTROL FOR MUSEUM STORES
LOW ENERGY CLIMATE CONTROL FOR MUSEUM STORES Abstract A computer model of a museum store is used to explore the effects of various methods of air conditioning. A room that is filled with an abundance of
More informationSTUDY ON HYBRID SYSTEM OF SOLAR POWERED WATER HEATER AND ADSORPTION ICE MAKER
, Volume 6, Number 4, p.168-172, 2005 STUDY ON HYBRID SYSTEM OF SOLAR POWERED WATER HEATER AND ADSORPTION ICE MAKER Zhaohui Qi School of Energy Science and Engineering, Centralsouth University, Changsha,
More informationUse of heat pump dehumidifiers on industrial drying of chili
International Journal of Scientific and Research Publications, Volume 7, Issue 12, December 2017 105 Use of heat pump dehumidifiers on industrial drying of chili Abeyrathna R.M.R.D., Amaratunga K.S.P.
More informationAnalysis of freeze protection methods for recuperators used in energy recovery from exhaust air
Analysis of freeze protection methods for recuperators used in energy recovery from exhaust air Anna Pacak 1,*, Andrzej Jedlikowski 1, Demis Pandelidis 1, and Sergey Anisimov 1 1 Wrocław University of
More informationFigure 1: Mini One and display case connections
Field test of Preservatech Mini One unit with different display case configuration and fluctuating environment Tests performed by GESAAF INTRODUCTION Preservatech Mini One is a device conceived to control
More informationImplementation and testing of a model for the calculation of equilibrium between components of a refrigeration installation
Implementation and testing of a model for the calculation of equilibrium between components of a refrigeration installation Marco Alexandre Onofre Dias This paper presents a model that was implemented
More informationSpecific Energy Consumption comparative study of Hot Air dryer and Heat Pump dryer for highland drying process Sayompon Srina
Specific Energy Consumption comparative study of Hot Air dryer and Heat Pump dryer for highland drying process Sayompon Srina Department of Mechanical Engineering, Faculty of Engineering, King Mongkut
More informationNUMERICAL SIMULATION OF VAPOUR COMPRESSION REFRIGERATION SYSTEM USING REFRIGERANT R152A, R404A AND R600A
NUMERICAL SIMULATION OF VAPOUR COMPRESSION REFRIGERATION SYSTEM USING REFRIGERANT R152A, R404A AND R600A [1] Ranendra Roy, [2] Madhu Sruthi Emani, [3] Bijan Kumar Mandal [1], [2],[3] Department of Mechanical
More informationMODEL AND SIMULATION OF DEEP-BED CLOVE DRYING: EFFECT OF FERMENTED TREATMENT
- Vol. 15, No. 1, April 21 MODEL AND SIMULATION OF DEEP-BED CLOVE DRYING: EFFECT OF FERMENTED TREATMENT Agus Supriatna ~omantri' Abstract This paper describes the prediction of deep-bed clove drying. This
More informationFIRE DYNAMICS IN FAÇADE FIRE TESTS: Measurement, modeling and repeatability
Proceedings of the International Conference in Dubrovnik, 15-16 October 2015 FIRE DYNAMICS IN FAÇADE FIRE TESTS: Measurement, modeling and repeatability Johan Anderson a, Lars Boström a, Robert Jansson
More informationTheoretical and Experimental Analysis of the Superheating in Heat Pump Compressors. * Corresponding Author ABSTRACT 1.
568, Page Theoretical and Experimental Analysis of the Superheating in Heat Pump Compressors Jose N. FONSECA *, Rodrigo KREMER, Thiago DUTRA 2 EMBRACO, Research & Development Group, Joinville, Santa Catarina,
More informationUse of Adapted Energy Screens in Tomato Production with Higher Water Vapour Transmission
Use of Adapted Energy Screens in Tomato Production with Higher Water Vapour Transmission Hugo F. Plaisier Ludvig Svensson Marconiweg 2 3225 LV Hellevoetsluis The Netherlands Keywords: screens, energy saving,
More informationCharacterization of a hygro-regulated Wall Base Ventilation System for Treatment of Rising Damp in Historical Buildings
Characterization of a hygro-regulated Wall Base Ventilation System for Treatment of Rising Damp in Historical Buildings Vasco Peixoto de Freitas, Full Professor Building Physics Laboratory Faculty of Engineering
More informationTHEORETICAL EQUILIBRIUM MOISTURE CONTENT OF WOOD UNDER VACUUM Zhangjing Chen? Fred M. Lamb1
THEORETICAL EQUILIBRIUM MOISTURE CONTENT OF WOOD UNDER VACUUM Zhangjing Chen? Research Associate Fred M. Lamb1 Professor Department of Wood Science and Forest Products Virginia Tech Blacksburg, VA 2406
More informationMODELING OF THE SINGLE COIL, TWIN FAN AIR-CONDITIONING SYSTEM IN ENERGYPLUS
MODELING OF THE SINGLE COIL, TWIN FAN AIR-CONDITIONING SYSTEM IN ENERGYPLUS Clayton Miller 1,* and Chandra Sekhar 1 1 National University of Singapore, Singapore * Corresponding email: miller.clayton@nus.edu.sg
More informationISSN: [Agcaoili S. O., 7(3): March, 2018] Impact Factor: 5.164
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY EVALUATION OF A HOME-MADE SOLAR BOX HEATER FOR DOMESTIC HEATING Shirly O. Agcaoili 1/ 1/ Researcher and Faculty Member of the
More informationSIMULATION ANALYSIS ON THE FRESH AIR HANDLING UNIT WITH LIQUID DESICCANT TOTAL HEAT RECOVERY
SIMULATION ANALYSIS ON THE FRESH AIR HANDLING UNIT WITH LIQUID DESICCANT TOTAL HEAT RECOVERY Xiaoyun Xie, Yidan Tang, Xiaoqin Yi, Shuanqiang Liu,Yi Jiang Department of Building Science and Technology,
More informationAnalysis of Constant Pressure and Constant Area Mixing Ejector Expansion Refrigeration System using R-1270 as Refrigerant
Analysis of Constant Pressure and Constant Area Mixing Ejector Expansion Refrigeration System using R-1270 as Refrigerant Ravi Verma 1, Sharad Chaudhary 2 1, 2 Department of Mechanical Engineering, IET
More informationEffect of domestic storage and cooking conditions on the risk distribution in ready to cook meat products
Effect of domestic storage and cooking conditions on the risk distribution in ready to cook meat products Bakalis S.*, Giannakourou M.C. and Taoukis P. School of Chemical Engineering, National Technical
More informationShortcut Model for Predicting Refrigeration Cycle Performance
17 A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 5, 15 Guest Editors: Petar Sabev Varbanov, Jiří Jaromír Klemeš, Sharifah Rafidah Wan Alwi, Jun Yow Yong, Xia Liu Copyright 15, AIDIC Servizi S.r.l.,
More informationDevelopment of a Sorption Assisted Air Conditioning System Driven by a Solar Air Collector
Development of a Sorption Assisted Air Conditioning System Driven by a Solar Air Collector Gunther M. Munz, C. Bongs, A. Morgenstern, Y. Tiedtke, H. Kummer, H.-M. Henning and Stefan K. Henninger Fraunhofer
More informationVirtual Household Refrigerators at Steady-State and Transient Conditions. Numerical Model and Experimental Validation.
Virtual Household Refrigerators at Steady-State and Transient Conditions. Numerical Model and Experimental Validation. Nicolás ABLANQUE, Carles OLIET, Joaquim RIGOLA, Carlos-David PEREZ-SEGARRA Universitat
More informationMODELLING AND OPTIMIZATION OF DIRECT EXPANSION AIR CONDITIONING SYSTEM FOR COMMERCIAL BUILDING ENERGY SAVING
MODELLING AND OPTIMIZATION OF DIRECT EXPANSION AIR CONDITIONING SYSTEM FOR COMMERCIAL BUILDING ENERGY SAVING V. Vakiloroaya*, J.G. Zhu, and Q.P. Ha School of Electrical, Mechanical and Mechatronic Systems,
More informationAn Experiment of Heat Exchanger Produces Hot Water Using Waste Heat Recovery from Air Conditioning
ISBN 978-93-84468-94-1 International Conference on Education, Business and Management (ICEBM-2017) Bali (Indonesia) Jan. 8-9, 2017 An Experiment of Heat Exchanger Produces Hot Water Using Waste Heat Recovery
More informationCOMPACT ADSORPTION CHILLERS WITH COATED ADSORBER HEAT EXCHANGERS
- 1 - COMPACT ADSORPTION CHILLERS WITH COATED ADSORBER HEAT EXCHANGERS W. Mittelbach, Managing Director, SorTech AG, Weinbergweg 23, 06120 Halle, Germany T. Büttner, Head of R&D / production, SorTech AG,
More informationPressure drop analysis of evaporator using refrigerants R-22, R-404A and R-407C
drop analysis of evaporator using refrigerants R-22, R-404A and R-407C #1 Pallavi Sawkar, #2 Dr. Pradeep Patil #12 Department of Mechanical Engineering, JSPM s JSCOE, Savitribai Phule Pune University,
More informationImproving the (museum) indoor climate in a flooded castle
Improving the (museum) indoor climate in a flooded castle H.L. Schellen Eindhoven University of Technology M.T.P. Ritmeijer Eindhoven University of Technology ABSTRACT: Amerongen Castle, built in de period
More informationReducing energy consumption of airconditioning systems in moderate climates by applying indirect evaporative cooling
Reducing energy consumption of airconditioning systems in moderate climates by applying indirect evaporative cooling Aleksandra Cichoń,*, Anna Pacak, Demis Pandelidis, and Sergey Anisimov Department of
More informationResidential Building Walls and Environment in Amman, Jordan
Int. J. of Thermal & Environmental Engineering Volume 3, No. 2 (211) 1-7 Residential Building Walls and Environment in Amman, Jordan S. J. Sulaiman*, N. Beithou Department of Mechanical Engineering, Applied
More informationDEEPAK PALIWAL, S.P.S.RAJPUT
International Journal of Scientific & Engineering Research, Volume 6, Issue 6, June-15 623 EXPERIMENTAL ANALYSIS OF HYDROCARBON MIXTURES AS THE NEW REFRIGERANT IN DOMESTIC REFRIGERATION SYSTEM DEEPAK PALIWAL,
More informationDOMESTIC DEHUMIDIFIERS IN COOL CONDITIONS: I PERFORMANCE FACTORS
DOMESTIC DEHUMIDIFIERS IN COOL CONDITIONS: I PERFORMANCE FACTORS MJ Cunningham 1 and CG Carrington 2 1 Building Research Association of New Zealand, Moonshine Rd., Porirua City, New Zealand 2 Department
More informationEVALUATION OF HEAT REJECTION STRATEGIES FOR LIQUID DESICCANT AIR-CONDITIONING SYSTEMS
EVALUATION OF HEAT REJECTION STRATEGIES FOR LIQUID DESICCANT AIR-CONDITIONING SYSTEMS by Danial Salimizad A thesis submitted to the Department of Mechanical and Materials Engineering in conformity with
More informationComparison Simulation between Ventilation and Recirculation of Solar Desiccant Cooling System by TRNSYS in Hot and Humid Area
Comparison Simulation between Ventilation and Recirculation of Solar Desiccant Cooling System by TRNSYS in Hot and Humid Area MMS DEZFOULI, SOHIF MAT, K.SOPIAN Solar Energy Research Institute (SERI, Universiti
More information27/11/2015. How does a greenhouse work: humidity. Energiezuinig ontvochtigen. Climate control, humidity
Energiezuinig ontvochtigen How does a greenhouse work: humidity Masterclass 26 november 2 HAS Den Bosch BOGO project Klimaat en energie: nieuwe low input teeltsystem in de tuinbouw F. Kempkes en S. Hemming,
More informationInfluence of temperature and drying air velocity on the kinetics of convective drying in the food industry
Influence of temperature and drying air velocity on the kinetics of convective drying in the food industry Ing. Michal Pěnička Project leader: Doc. Pavel Hoffman CSc. Abstract The aim of this study was
More informationTHE EFFECTS OF HUMIDITY, COMPRESSOR OPERATION TIME AND AMBIENT TEMPERATURE ON FROST FORMATION IN AN INDUSTRIAL FRIDGE *
IJST, Transactions of Mechanical Engineering, Vol. 39, No. M1 +, pp 197-203 Printed in The Islamic Republic of Iran, 2015 Shiraz University THE EFFECTS OF HUMIDITY, COMPRESSOR OPERATION TIME AND AMBIENT
More informationExperimental characterization of an absorption diffusion machine based on light hydrocarbons for solar cooling
Revue des Energies Renouvelables ICESD 11 Adrar (2011) 187 195 Experimental characterization of an absorption diffusion machine based on light hydrocarbons for solar cooling R. Garma 1, A. Bellagi 1 and
More informationEMBEDDED PIPE SYSTEMS. SURFACE HEATING AND COOLING Heat transfer coefficient COOLING CAPACITY. Max. heating-cooling-capacity
COOLING AND HEATING OF BUILDINGS BY ACTIVATING THE THERMAL MASS WITH EMBEDDED HYDRONIC PIPE SYSTEMS EMBEDDED PIPE SYSTEMS Bjarne W. Olesen, Ph.D., Head of R&D, Wirsbo-VELTA, Germany Professor, Technical
More informationFeasibility Study of Condensation Heat Exchanger with Helical Tubes for a Passive Auxiliary Feedwater System
Feasibility Study of Condensation Heat Exchanger with Helical Tubes for a Passive Auxiliary Feedwater System Kwanghee Seo 1) and Taewan Kim 2)* 1) KEPCO Engineering & Construction Company. INC., 269 Hyeoksin-ro,
More informationPERFORMANCE OF DEEP FREEZER BY USING HYDROCARBON BLENDS AS REFRIGERANTS
Int. J. Chem. Sci.: 14(S2), 2016, 665-674 ISSN 0972-768X www.sadgurupublications.com PERFORMANCE OF DEEP FREEZER BY USING HYDROCARBON BLENDS AS REFRIGERANTS J. THAVAMANI *, MARRIPUDAGALA KOMALI, SHAIK
More informationEXPERIMENTAL STUDY OF CENTRIFUGAL HUMIDIFIER FITTED IN AN INDUSTRIAL SHED LOCATED IN TROPICAL CLIMATES
THERMAL SCIENCE, Year 2011, Vol. 15, No. 2, pp. 467-475 467 EXPERIMENTAL STUDY OF CENTRIFUGAL HUMIDIFIER FITTED IN AN INDUSTRIAL SHED LOCATED IN TROPICAL CLIMATES by Krishnasamy SENTHILKUMAR a* and Pss
More informationInfluence of different surface systems and humidity-controlled ventilation systems with heat recovery on the indoor climate in flats
Influence of different surface systems and humidity-controlled ventilation systems with heat recovery on the indoor climate in flats J. Dreyer, T. Bednar & C. Hecht Department of Building Physics, Universitjl
More informationTheoretical Performance Analysis of a Liquid Desiccant Air- Conditioning System for Air Heating and Cooling
Proc. 2nd International Confirence Solar Air-Conditioning, Tarragona (ES), 18.-19.10.07, CD Theoretical Performance Analysis of a Liquid Desiccant Air- Conditioning System for Air Heating and Cooling R.
More informationModelling the Performance of a Diffusion Absorption Refrigeration System
Modelling the Performance of a Diffusion Absorption Refrigeration System Noman Yousuf 1, Etienne Biteau 2, Timothy Anderson 1, Michael Gschwendtner 1 and Roy Nates 1 1 School of Engineering, Auckland University
More informationPERFORMANCE OF EARTH TUBE HEAT EXCHANGER COOLING OF AIR A REVIEW
Int. J. Mech. Eng. & Rob. Res. 2015 Ashish Kumar Chaturvedi and V N Bartaria, 2015 Review Article ISSN 2278 0149 www.ijmerr.com Vol. 4, No. 1, January 2015 2015 IJMERR. All Rights Reserved PERFORMANCE
More informationMODERN EVAPORATIVE COOLER
MODERN EVAPORATIVE COOLER Miss.Namrata Govekar Department of Mechanical Engineering, SGMCOE Mahagoan Mr.Akshay Bhosale Department of Mechanical Engineering, SGMCOE Mahagoan Mr.Amol Yadav Assistant Professor,Mechnical
More informationHICOSYS FOR PROCESS CONTROL OF SPRAY DRYERS
1/7 HICOSYS FOR PROCESS CONTROL OF SPRAY DRYERS CAPACITY INCREASE AND FOULING REDUCTION BY MEASURING HUMIDITY OF DRYING AIR? In spray drying processes capacity of the dryer is partly determined by the
More informationExperimental Efficiency Investigation on Heat Recovery System Used in a Solar-Powered Desalination Process
Energy Research Journal 3 (2): 27-36, 2012 ISSN 1949-0151 2012 doi:10.3844/erjsp.2012.27.36 Published Online 3 (2) 2012 (http://www.thescipub.com/erj.toc) Experimental Efficiency Investigation on Heat
More informationInternational Journal of Food and Biosystem Engineering. May 2015 Vol. 1, No. 1. Optimisation of industrial Food Drying Operation. Henry T.
Optimisation of industrial Food Drying Operation Henry T. Sabarez CSIRO Food and Nutrition Flagship, Werribee 3030, Victoria, Australia Abstract The process of drying food materials is extremely complex
More informationThermodynamic Analysis of Ammonia-Water Absorption Refrigeration System with Ejector
International Journal of Mechanics and Solids. ISSN 0973-1881 Volume 13, Number 2 (2018), pp. 95-110 Research India Publications http://www.ripublication.com/ijms.htm Thermodynamic Analysis of Ammonia-Water
More informationVENTILATIVE COOLING CONTROL STRATEGIES APPLIED TO PASSIVE HOUSE IN ORDER TO AVOID INDOOR OVERHEATING
VENTILATIVE COOLING CONTROL STRATEGIES APPLIED TO PASSIVE HOUSE IN ORDER TO AVOID INDOOR OVERHEATING Rebeca Barbosa 1, Martin Barták 1, Jan L. M. Hensen 1, 2, Marcel G. L. C. Loomans 2 1 Czech Technical
More informationEffect of Relative Humidity on Oven Temperature of Locally Design Solar Carbinet Dryer
Global Journal of Science Frontier Research Physics and Space Science Volume 13 Issue 1 Version 1.0 Year Type : Double Blind Peer Reviewed International Research Journal Publisher: Global Journals Inc.
More informationOptimisation of cooling coil performance during operation stage for improved humidity control
Indoor Air 2008, 17-22 August 2008, Copenhagen, Denmark - Paper ID: 741 Optimisation of cooling coil performance during operation stage for improved humidity control S.C. Sekhar * and L.T. Tan National
More information