就一幢建筑物而言,窗户的热损失在建筑物总热损失中占很大比例(约占50%左右)。每平方米单层玻璃窗的热损失大约是同面积240毫米厚砖墙的4倍,是370)毫米厚砖墙的3倍。另外,冬季窗户有冷风渗透,夏季有透过玻璃的热辐射。如果搞好了窗户的保温,整个建筑物的热损失会有明显的下降,对于有空调的房间效果更加显著。 For a building, the heat loss of the windows accounts for a large proportion of the total heat loss of the building (about 50%). The heat loss per square meter of single-glazed windows is about four times that of a 240 mm thick brick wall in the same area, and three times that of a 370 mm thick brick wall. In addition, cold winds permeate the windows in winter and heat radiation through the glass in summer. If the insulation of the windows is done well, the heat loss of the entire building will be significantly reduced, and the effect on the air-conditioned rooms will be more pronounced.