热桥对居住建筑外墙传热性能的影响分析

Analysis on Effect of Heat Bridge to Heat Transfer of Wall

热桥的主要影响是增加了墙体局部传热 .选取几种夏热冬冷地区常用外墙 ,分别对其平均传热系数进行计算 ,与主体部位传热系数进行了比较 ,分析了不同结构。

The main effect of heat bridge is to increase the heat transfer of parts of outside wall. The average heat transfer coefficient of some common walls is calculated in the region of hot in summer and cold in winter. The result is compared with that of main part of the same wall. The effect of heat bridge to average heat transfer coefficient under some circumstances, including different structure, different width of the wall and different area ratio of window to wall, is analyzed.