建筑能耗在全国总能耗中所占比重很大,据粗略估计,约占20～25%(国外占40～50%)。为了减少能耗,从1982年起,中国建筑科学研究院、中国建筑技术发展中心、中国建筑西北设计院、东北设计院共13个单位,从能耗调查、实测、分析研究入手,对北京、哈尔滨、沈阳、兰州等地的采暖能耗、不同外围护结构、窗户的气密性和保温性能、锅炉 Building energy consumption accounts for a large proportion of the total energy consumption in the country. According to a rough estimate, it accounts for about 20 to 25% (40 to 50% for foreign countries). In order to reduce energy consumption, since 1982, the China Academy of Building Research, China Building Technology Development Center, China National Building Northwest Design Institute, and Northeast Design Institute have a total of 13 units, starting with energy consumption surveys, field surveys, and analysis studies, Heating energy consumption, different external protective structures, air tightness and heat preservation performance of windows, boilers in Harbin, Shenyang, Lanzhou, etc.