室内热源辐射热再分布的研究  

Redistribution Proportion of Indoor Radiation Heat

作　　者：周懿[1] 

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海200092

出　　处：《建筑节能》2014年第3期63-66,共4页BUILDING ENERGY EFFICIENCY

基　　金：上海市科委科技攻关课题(09dz1207704)

摘　　要：通过分析室内热源与围护结构内表面的辐射传热机理,详细介绍了计算热源与室内表面辐射热分布的Gebhart吸收系数法。确定了关键参数即吸收系数的计算,给出了蒙特卡洛法计算辐射吸收系数的原理,并编制了通用的计算程序,分别研究了建筑高度、断面尺寸对热源辐射分配的影响。最后用该方法计算了一复杂形体中庭内热源辐射热在侧壁的分布情况。计算结果为模拟室内热环境的边界定义提供了参考。Based on the analysis of thermal transfer mechanism between heat source and building en- velope, Gebhart absorption coefficient method is introduced to calculate the heat transfer between them. A key parameter is confirmed and a theory to calculate it has been described in detail. Then a computing program has been written by using Mento Carlo method. The influence of building＇s height and section size on radiation heat＇s redistribution is studied. At the end, this method is applied to calculate the radiation heat between heat source and side walls of an atrium with a complex form. The result provides reference for defining the boundary conditions when simulating the indoor thermal environment.

关 键 词：热源 辐射热 吸收系数 蒙特卡洛法 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]