夏热冬冷地区自保温体系典型热桥三维传热的有限元分析  

Finite Element Analysis of 3D Heat Transfer of Typical Thermal Bridge of Self-Thermal Insulation in Hot-Summer and Cold-Winter Zone

作　　者：贾殿鑫[1] 葛坚[1] 俞自涛[2] 

机构地区：[1]浙江大学建筑工程学院建筑系 [2]浙江大学能热工与动力系统研究所

出　　处：《建筑与文化》2013年第2期76-77,共2页Architecture & Culture

基　　金：国家十二五科技支撑计划课题<建筑用能系统评价优化与自保温体系研究及示范>资助课题编号2011BAJ03B11

摘　　要：本文通过有限元软件模拟分析了夏热冬冷地区中自保温体系中典型热桥的三维稳态传热情况。分析得出了该典型热桥构造的温度场及热流场的三维分布情况,确定热桥影响区域,找到围护结构保温最弱的区域。同时将三维模拟结果与二维模拟结果做了比对分析,得出在验证夏热冬冷地区的自保温墙体材料的结露隐患时,应选用三维模拟分析的方法。In this paper, the mechanism of heat transfer of a typical thermal self-insulation materials are researched with a finite element software. One of typical thermal bridge structure of self-insulation system selected from existing collective drawings was analyzed by experimental study with three-dimensional steady- state model, and the region affected is defined while the areas which have the worst insulate ability are determinate. By comparing with the numerical simulation results, it was concluded that thermal self- insulation materials with appropriate density and thickness could meet the demands of thermal performance regulations in hot summer and cold winter areas and could avoid condensation, and as to thermal bridges, it is relatively right to adopt three-dimensional heat conduction model for calculation.

关 键 词：有限元分析 热桥 自保温 三维稳态分析 

分 类 号：TU111.4[建筑科学—建筑理论]