传统夯土民居冬季热稳定性研究

Thermal stability of traditional tamped-soil dwelling in winter

以周期性不稳定传热理论分析了冬季传统夯土民居各围护结构内表面的温度波动,并将之按照各自面积权重和相位进行逐一合成,得到室内平均辐射温度相对于室外的热衰减倍数和延迟时间。在室外温度波幅为5℃的条件下,对一典型建筑计算和测试得出室内平均温度和空气温度波幅分别为0.3℃和0.5℃。两者合成后的作用温度波幅约为0.4℃,说明此类民居在冬季具有良好的热稳定性。

Analyze damping factor and heat lag of inter-surface temperature for each envelope of traditional tamped-soil dwelling in winter according to the theory of periodicity heat transfer. Present thermal stability of MRT through synthesizes every temperature vibration of inter-surface according to their area proportion and phase. A typical tamped-soil dwelling is studied when amplitude of out door temperature is 5℃. The results show that amplitude of MRT and indoor air temperature is about 0. 3℃ and 0. 5℃, after calculate and test it respectively, and the amplitude of operative temperature is about 0. 4℃. Validate this type of dwelling have good thermal stability with it.