在直接受益式太阳房中,为减少直接受益窗的热损失,往往要使用双层玻璃窗。如果我们不考虑窗户冷风渗透,仪考虑双层窗的传热热损失,那么,双层玻璃窗空气间层多厚时其传热热损失最小呢?从传热学角度分析,我们可以把双层玻璃窗空气间层看成是二维封闭空间的传热问题,其外层玻璃是冷壁面,内层玻璃是热壁面,因此成为一个有限封闭空间内两壁面之间对流、辐射和导热的综合传热过程。可以进一步认为,当内外层玻璃温度一定时,两玻璃之间的辐射换热量不随它们之间空气间层厚度而变化,也就是说此时可以认为辐射换热量是一个常数。因此,确定最佳厚度归结为寻找使对流和导流传热量达到最小 In direct-benefit solar houses, double-glazed windows are often used to reduce heat loss from the direct benefit window. If we do not consider the window cold air infiltration, the instrument considers the heat loss heat loss of the double-layer window. Then, if the double-glazed air layer is thick, the heat loss of the heat is minimal. From the perspective of heat transfer, we can double The interlayer of a glass window is considered to be a heat transfer problem in a two-dimensional enclosed space. The outer glass is a cold wall and the inner glass is a hot wall. Therefore, it becomes convection, radiation and heat conduction between two walls in a limited closed space. Comprehensive heat transfer process. It can be further considered that when the inner and outer glass temperatures are constant, the radiant heat exchange between the two glasses does not change with the thickness of the air between them, which means that the radiation heat exchange amount can be considered as a constant at this time. Therefore, the determination of the optimum thickness comes down to finding the minimum amount of convection and conduction heat transfer