Comparison of Energy Demand in Buildings with Dual Airflow,Low-emissivity,and Blinds Windows
Most residential buildings obtain fresh outdoor air by infiltration.If a window is opened to obtain fresh air,it will increase energy consumption of the heating and cooling system.How to improve indoor air quality and to conserve energy are very challenging.This investigation used a three-layer,dual airflow window that brings outdoor air into indoors by small fans.Heat between the indoor air and outdoor air was exchanged in the two cavities formed by the three-layer glazing window system.The outdoor air temperature was tempered to conserve energy.The energy performance of the dual airflow window in Harbin,China was compared with that of a low-e window and a blinds window by using EnergyPlus,a building energy simulation program.The energy simulation results were validated by the experimental data obtained from an experimental facility that had six room-size test cells.Each type of the window was installed in a south-facing and a north-facing cell,respectively.The results show that cells the dual airflow window demanded 10% less heating energy without ventilation and a half of the heating energy with ventilation,compared with those cells with the low-e and blinds windows.
Windows Energy demand lndoor air quality
Jingshu Wei Jianing Zhao Qingyan Chen
School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin,Heilongjiang School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin,Heilongjiang
国际会议
The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)
大连
英文
86-93
2008-07-01（万方平台首次上网日期，不代表论文的发表时间）