摘要
采用有限元法对节能建筑复合墙体热桥进行二维非稳态传热分析。计算结果表明:冬季采用墙体外保温时墙体的重质承重部分和构造柱能够保持较高的内部温度,对建筑主体结构起到良好的保护作用,且热桥漏热损失小;内保温墙体由于保温层不连续,热桥部位的传热损失是外保温方式的3倍,采暖负荷计算时应该进行热桥传热修正,在我国北方热桥较多的小开间的采暖居住建筑中应慎重采用。
In this paper, finite element method has been utilized to analyze the unsteady thermal characteristics of heat bridges of interior and exterior composite wall insulation and their heat transfer losses of composite wall in energy saving buildings. The calculating result shows that heat loss of interior composite wall insulation＇s heat bridge is 3 times to exterior wall insulation; its heat load calculation must be correction with heat loss of heat bridge, and it must to be more careful in small fiat in north area.
出处
《工程建设与设计》
2009年第10期40-43,共4页
Construction & Design for Engineering
关键词
建筑节能
复合墙体
热桥
有限元
energy saving building
composite wall
heat bridges
finite element
