建筑排风隔热外窗区域模型的实验验证
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摘要
排风隔热窗可以充分利用空调排风的低品位能,使外窗室内侧玻璃表面温度接近于室内空气温度,从而减少外窗形成的空调负荷。本文采用区域模型法,通过单元能量平衡分析,建立排风隔热窗的二维传热数学模型。搭建排风隔热窗的测试实验台,开展其热特性的实验研究,利用实测数据验证模型建立过程中二维简化方法的正确性,以及通过实验数据与模拟计算结果的比较,验证模型本身的可靠性。
The exhaust insulation window can recover and utilize the low-grade energy source of exhaust air from air conditioning to allow temperature of internal surface of the window become as close as possible to that of the indoor air and to further reduce of the cooling/heating load through window.Based on the energy balance of each component,a two-dimensional zonal model is developed to analyze thermal behavior of the exhaust insulation window.In addition,experimental tests are carried out in a full-scale test cell.The two-dimensional zonal model is validated by comparing the simulation results with the experimental measurements.
The exhaust insulation window can recover and utilize the low-grade energy source of exhaust air from air conditioning to allow temperature of internal surface of the window become as close as possible to that of the indoor air and to further reduce of the cooling/heating load through window.Based on the energy balance of each component,a two-dimensional zonal model is developed to analyze thermal behavior of the exhaust insulation window.In addition,experimental tests are carried out in a full-scale test cell.The two-dimensional zonal model is validated by comparing the simulation results with the experimental measurements.
引文
[1]Zhang C,Wang J B,Xu X H,et al.Modeling and thermal performance evaluation of a switchable triple glazing exhaust air window[J].Applied Thermal Engineering,2016,92(1):8-17
[2]Zanghirella F,Perino M,Serra V.A numerical model to evaluate the thermal behaviour of active transparent fa9ades[J].Energy and Buildings,2011,43(5):1123-1138
[3]Yu J H,Yang J,Xiong C.Study of dynamic thermal performance of hollow block ventilated wall[J].Renewable Energy,2015,84:145-151
[4]邹付熙,王劲柏,张冲等.外墙排风隔热机制及其热阻特性模拟研究[J].建筑科学,2015,31(8):80-86
[5]严清,王劲柏,张冲等.排风隔热墙的频域热特性研究[J].建筑科学,2015,31(4):114-119
[6]ASHRAE.2009 ASHRAE Handbook of Fundamentals[S].Chapter 15:Fenestration.American Society of Heating,Refrigerating and Air-Conditioning Engineers,Inc.,Atlanta,USA,2009
[7]Chow T T,Li C,Lin Z.Innovative solar windows for coolingdemand climate[J].Solar Energy Materials and Solar Cells,2010,94(2):212-220
[8]Haddad K H,Elmahdy A H.Comparison of the monthly thermal performance of an exhaust-air window and a supply-air window[J].ASHRAE Transaction,1999,105(2):918-926
[9]Kim M H,Oh C Y,Hwang J H,et al.Thermal performance of the exhausting and the semi-exhausting triple-glazed airflow windows[J].International Journal of Energy Research,2006,30(3):177-190
[10]Gosselin J R,Chen Q Y.A dual airflow window for indoor air quality improvement and energy conservation in buildings[J].HVAC&R Research,2008,14(2):359-372
[11]Takemasa Y,Togari S,Miura K,et al.Evaluation of calculation models for predicting thermal performance of various window systems[J].ASHRAE Transactions,2013,119(1):1-20
[12]Zhang C,Cheng K,Wang J B,et al.Numerical evaluation of heat recovery performance of a switchable exhaust air window[J].Energy Procedia,2016,88:738-741
[13]Zhang C,Wang J B,Xu X H,et al.Development of a simplified model of the switchable exhaust air insulation window[C]//Proceedings of the 2014 ASHRAE/IBPSA-USA Building Simulation Conference.Atlanta,USA,September 10-12,2014:316-322
[14]Wright J L.A correlation to quantify convective heat transfer between vertical window glazings[J].ASHRAE Transactions,1996:102(1):940-946
[15]Mc Adams W H.Heat Transmission,3rd edition[M].Mc GrawHill,New York,USA,1954
[16]Churchill S W,Chu H H S.Correlating equations for laminar and turbulent free convection from a vertical plate[J].International Journal of Heat and Mass Transfer,1975,18(11):1323-1329
[17]Kbal C.An approach for the evaluation of energy and cost efficiency of glass facades[J].Energy and Buildings,2005,37(6):673-684
[18]Swinbank W C.Long-wave radiation from clear skies[J].Quarterly Journal of the Royal Meteorological Society,1963,89(381):339-348
[19]章熙民.传热学[M].北京:中国建筑工业出版社,2007
[2]Zanghirella F,Perino M,Serra V.A numerical model to evaluate the thermal behaviour of active transparent fa9ades[J].Energy and Buildings,2011,43(5):1123-1138
[3]Yu J H,Yang J,Xiong C.Study of dynamic thermal performance of hollow block ventilated wall[J].Renewable Energy,2015,84:145-151
[4]邹付熙,王劲柏,张冲等.外墙排风隔热机制及其热阻特性模拟研究[J].建筑科学,2015,31(8):80-86
[5]严清,王劲柏,张冲等.排风隔热墙的频域热特性研究[J].建筑科学,2015,31(4):114-119
[6]ASHRAE.2009 ASHRAE Handbook of Fundamentals[S].Chapter 15:Fenestration.American Society of Heating,Refrigerating and Air-Conditioning Engineers,Inc.,Atlanta,USA,2009
[7]Chow T T,Li C,Lin Z.Innovative solar windows for coolingdemand climate[J].Solar Energy Materials and Solar Cells,2010,94(2):212-220
[8]Haddad K H,Elmahdy A H.Comparison of the monthly thermal performance of an exhaust-air window and a supply-air window[J].ASHRAE Transaction,1999,105(2):918-926
[9]Kim M H,Oh C Y,Hwang J H,et al.Thermal performance of the exhausting and the semi-exhausting triple-glazed airflow windows[J].International Journal of Energy Research,2006,30(3):177-190
[10]Gosselin J R,Chen Q Y.A dual airflow window for indoor air quality improvement and energy conservation in buildings[J].HVAC&R Research,2008,14(2):359-372
[11]Takemasa Y,Togari S,Miura K,et al.Evaluation of calculation models for predicting thermal performance of various window systems[J].ASHRAE Transactions,2013,119(1):1-20
[12]Zhang C,Cheng K,Wang J B,et al.Numerical evaluation of heat recovery performance of a switchable exhaust air window[J].Energy Procedia,2016,88:738-741
[13]Zhang C,Wang J B,Xu X H,et al.Development of a simplified model of the switchable exhaust air insulation window[C]//Proceedings of the 2014 ASHRAE/IBPSA-USA Building Simulation Conference.Atlanta,USA,September 10-12,2014:316-322
[14]Wright J L.A correlation to quantify convective heat transfer between vertical window glazings[J].ASHRAE Transactions,1996:102(1):940-946
[15]Mc Adams W H.Heat Transmission,3rd edition[M].Mc GrawHill,New York,USA,1954
[16]Churchill S W,Chu H H S.Correlating equations for laminar and turbulent free convection from a vertical plate[J].International Journal of Heat and Mass Transfer,1975,18(11):1323-1329
[17]Kbal C.An approach for the evaluation of energy and cost efficiency of glass facades[J].Energy and Buildings,2005,37(6):673-684
[18]Swinbank W C.Long-wave radiation from clear skies[J].Quarterly Journal of the Royal Meteorological Society,1963,89(381):339-348
[19]章熙民.传热学[M].北京:中国建筑工业出版社,2007