壁面间热辐射对建筑动态热性能的影响研究

Effect of heat radiation among walls on dynamic thermal performances of building

建筑动态热性能受众多因素的影响,辐射换热是其中一个重要因素。本文以成都市一栋单体建筑为研究对象,基于数值计算方法,分析并探讨了壁面间热辐射对建筑动态热性能的影响。结果显示,当建筑设有外窗时,壁面间辐射换热对建筑动态热性能的影响较大,在进行传热计算时不可忽略。

The dynamic thermal performances of building are affected by many factors, in which radiation heat transfer is critical. However, the results about effect of radiation on building dynamic thermal characters got by different literatures do not agree. In this study, an individual building located in Chengdu is selected as a model. The effect of radiation heat transfer among walls on the dynamic thermal performances is analyzed and discussed based on numerical calculation. The results shows that when external window is assembled in building, radiation among walls has a great influence on the dynamic thermal performances, which should be taken into account in the heat transfer calculation.