Theoretical discussions of perfect window, ideal near infrared solar spectrum regulating window and current thermochromic window

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• 作者：Hong Ye ; ^{hye@ustc.edu.cn} ; Xianchun Meng ; Bin Xu ; ^{binxu@ustc.edu.cn}
• 关键词：Perfect window ; Ideal near infrared solar spectrum regulating window ; Thermochromic window ; Energy consumption index
• 刊名：Energy and Buildings
• 出版年：2012
• 期刊代码：12_03787788
• 类别：pw
• 出版时间：June, 2012
• 卷：49
• 期：Complete
• 页码：164-172
• 文件大小：1527 K

摘要

In order to evaluate the energy saving performance of various windows on a common basis, three conceptual window models are presented, and an energy consumption index is defined as the ratio of the energy consumption of a given window to the corresponding value of the perfect window. A building energy analysis program, 鈥淏uildingEnergy鈥? was used to evaluate the energy consumption value of different window models. The following results are obtained: the energy saving potential of regulating the emissivity of the window is greater than that of regulating the solar transmissivity, the optimized phase transition temperature of the ideal near infrared solar spectrum regulating window is between 16 and 21 掳C, and due to the high absorptivity in the metal state, the single vanadium dioxide (VO₂) glazing discussed here behaves differently than the ideal near infrared solar spectrum regulating window, and it shows no obvious solar control advantage in energy savings over the ordinary window, and the phase transition process has no contribution to the energy saving effect of the single VO₂ glazing in the summer.