本文是根据《蒸压加气砼应用技术规程》(JGJ17-84)第五章“围护结构热工设计”的内容加以论述的,并用一些计算、实测数据对规程进行论证。加气砼导热系数较小,在寒冷地区作为围护结构,它的保温性能很好,这一点是众所周知的。另外通过实践得出,我国南方炎热地区(如上海、武汉、重庆等城市)以加气砼为外 This article is based on “Autoclaved Aerated Concrete Application Technical Regulations” (JGJ17-84) Chapter 5 “enclosure structure thermal design” to be discussed, and use some calculations, measured data to demonstrate the procedure. Aerated neodymium has a small thermal conductivity, and it is well known as a retaining structure in a cold area because of its good thermal insulation properties. In addition, it has been learned through practice that hot regions in southern China (such as Shanghai, Wuhan, Chongqing, etc.)