Thermal Process of Windows in Hot Summer and Cold Winter Climate
Thermal Process of Windows in Hot Summer and Cold Winter Climate
复制标题
夏热冬冷气候下窗户的热过程
DOI：
10.1016/j.proeng.2015.09.158
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Qun Zhao
中科院分区：
文献类型：
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作者：
Shunyao Lu;Zhengrong Li;Qun Zhao
在夏热冬冷的气候条件下，窗户得热是空调冷负荷的主要组成部分，具有重要的意义。本文通过对上海地区南、西向窗热工过程的分析，试图找出最有效的窗节能技术。通过数值计算，比较了不同组分的比例，找出了窗的主要得热量来源。计算结果表明，太阳辐射得热量远大于室内外温差引起的热传递。12：00以后，西窗的太阳得热量远高于南窗。对于南窗，地面的散射辐射和反射辐射是太阳得热的主要来源。对于西窗，12：00以后直接辐射得热量占太阳得热量的大部分。因此，应根据不同的定位采取不同的策略。
Heat gain through the windows is of great importance as it is the main part of cooling load in the hot summer and cold winter climate. This paper attempts to find out the most efficient energy saving technology for windows by analysing the thermal process of the south and west oriented windows in Shanghai. By numerical calculation, the ratios of different compositions are compared to find out which is the main source of heat gain of windows. The calculation result shows that solar radiation heat gain is much bigger than the heat transmission caused by temperature difference between indoor and outdoor air. Solar heat gain for west windows is much higher than for south windows after 12:00. For south windows, diffuse radiation and reflected radiation from ground are the main source of solar heat gain. As for west windows, direct radiation heat gain takes up most of solar heat gain after 12:00. Therefore different strategies should be taken according to different orientations.