利用ANSYS计算异型围护结构中的热桥线传热系数

热桥对于建筑围护结构的整体节能计算、内表面的结露温度评估有着很大的影响。本文首先介绍了目前国内外建筑围护结构中热桥的传热计算方法及其研究现状,阐述了确定结构性热桥线传热系数的一般方法。然后通过对二维稳态传热模拟软件PTDA(Planar Temperature Distribution and Analysis)进行的模拟对比分析,提出了利用ANSYS有限元计算软件计算异型围护结构中热桥线传热系数的方法,该方法对实际工程节能计算起参考作用。

Calculation on Linear Heat Transfer Coefficient of Thermal Bridges in Special Shape Building Envelope by ANSYS

Thermal bridge has great influence on integral energy-saving calculation of building envelope,as well as dew point temperature evaluation of interior surface.In this paper,calculation methods for thermal bridge heat transfer in building envelope and current status of the theoretical study were introduced, also the common method to determine the structural heat transfer coefficient was discussed.Furthermore,the comparative analysis using the 2-D stable heat transfer simulation software of PTDA(Planar Temperature Distribution and Analysis)was carried out,and based on the analysis results,the calculation method of linear heat transfer coefficient of thermal bridges in special shape building envelope by the software of ANSYS was presented,it could be a reference for the calculation of practical projects.