民用建筑围护结构动态热过程计算研究

Simulation of Dynamic Thermal Process in Envelope of Civil Building

民用建筑围护结构动态热过程的分析计算对建筑的能耗及节能评价有重要意义。结合广东地区夏季的气候特点,发展了单室建筑围护结构动态温度和传热计算的理论模型,计算中考虑太阳辐射作用,围护结构与内、外环境的对流与辐射换热,以及围护结构间的辐射换热。计算了夏季1 d中6:00～18:00时段,围护结构包括屋顶、东南西北墙体、木门及玻璃窗内、外表面的温度及热流。

Analysis on dynamic thermal process in civil building envelope is important to evaluate energy consumption of the building. The theoretical model for computing the dynamic temperature and heat transfer in single compartment building envelope was established. The computation is closely associated with the climatic condition of Guangdong province in summer. The following heat transfer processes were considered into the computation, including radiation of the sun, convective and radiative heat transfer between the envelope and the environ- ment, radiative heat transfer between the envelopes. As the sample, the temperature and heat flux on inside and outside surfaces of envelope including the roof, the walls, door and window during 6：00-18：00 of one day in summer were computed.