一、概况建筑外窗是一个多功能的建筑构件。为了采光、眺望和通风的需要,人们在外墙上开了窗子。这又给人们带来了不少麻烦,因为外窗的保温、隔热及隔声性能比外墙要差得多。一般在炎热地区需要采取隔热措施以限制太阳辐射进入房间,在寒冷地区需要采取保温措施以减少通过窗的热损失。本文主要涉及寒冷地区建筑外窗(包括阳台门)的冬季保温问题。塑料窗与金属窗除窗框外,在保温方面是基本相同的。 I. Overview Building exterior windows are a multi-functional building component. For lighting, viewing and ventilation, people opened windows on the outer walls. This brings a lot of trouble to people because the insulation, heat insulation and sound insulation performance of the outer window is much worse than that of the outer wall. Heat insulation measures are generally needed in hot areas to limit solar radiation from entering the room. In cold areas, insulation measures are needed to reduce the heat loss through the windows. This article mainly deals with the winter insulation of windows outside buildings (including balcony doors) in cold areas. Plastic windows and metal windows are basically the same in insulation except for window frames.