摘要
增加砌块厚度或填充保温材料都可以有效提高砌块平均热阻,却无形中增加了建筑成本,而通过优化砌块空间布局来提高热阻却是近零成本的方法。该论文使用CFD方法建立空心砌块的数值模型,模拟计算得到了砌块的平均热阻,其值与理论计算结果相近。然后采用该模拟方法分别研究了空心砌块、完全填充复合砌块和不完全填充复合砌块的空间布局优化没计。得到以下重要结论:(1)芯材与基材的热导率之比越小,砌块空间布局对砌块的平均热阻影响越大;(2)砌块块型设计应尽量使各并联热路的传热阻相等。
To increase the thermoresistance of block, adding thickness or filling insulation material will push up the building cost, however, optimizing its spatial layout is a nearly zero-cost way. The paper set up a numerical model of hollow blocks through CFD method, then respectively researched optimization plans of hollow block and composite block. Finally, following conclusions are draw, 1） the smaller the ratio of insulation material＇s heat conductivity coefficient to substrate material＇s, the bigger influence the layout of block will has on its thermal resistance; 2） the thermal resistances of every section along the direction of heat flow should be equal as far as possible.
出处
《建筑技术开发》
2016年第4期4-7,共4页
Building Technology Development
关键词
复合保温砌块
计算流体力学
空间布局
热路
平均热阻
composite heat insulation block
computational fluid dynamics
spatial layout
thermal path
thermal resistance
