技术中心

【英文篇名】 Window thermal process in hot climate 【作者中文名】 董子忠; 许永光; 温永玲; 陈启高; 【作者英文名】 By Dong Zizhong ★; Xu Yongguang; Wen Yongling and Chen Qigao★Chongqing University; China; 【作者单位】 重庆大学; 重庆市建设技术发展中心; 【文献出处】 暖通空调, Hv 窗户; 辐射得热; 温差; 传热; 节能; 【英文关键词】 hot area; window; solar radiation heat gain; temperature difference; heat transfer; energy saving; 【摘要】 以重庆地区为例 ,探讨了炎热地区夏季南向和西向窗户的太阳辐射得热问题。认为辐射得热是导致室内热环境恶化的首要原因 ,西向铝合金双玻窗的辐射得热高达 5 2 0W/m2 ,而基于室内外温差的热流最大也不超过 5 0W /m2 ;对于南向窗 ,太阳直射对室内热环境影响相对较小 ,天空散射与环境反射是窗户得热的主要来源。对炎热地区的窗户节能而言 ,有效控制辐射得热、采用遮阳装置是问题的关键。 【英文摘要】 Studies the solar radiation gained by south and west oriented windows in Chongqing. Considers that solar heat is the first factor leading to bad indoor thermal environment. The solar radiation heat gain onto a west oriented double glass window can be as high as 520 W/m 2, while heat transmission caused by temperature difference between indoor and outdoor air is less than 50 W/m 2. For a south oriented window, the effect of direct solar radiation is smaller and solar dispersion and environment reflection a...