双层玻璃空气层厚度变化对热阻影响的实验研究  

Experimental study on heat resistance under variational double glazing air layer thickness

作　　者：孟凡康[1] 殷志祥[1] 闫明慧[1] 

机构地区：[1]辽宁工程技术大学,辽宁阜新123000

出　　处：《节能》2007年第6期54-57,共4页Energy Conservation

摘　　要：针对目前对双层玻璃空气热阻最佳厚度利用解释模糊的问题,通过建立实验模型,对空气层分别为10～70mm等12组厚度的双层玻璃内表面温度等数据进行测量,按照有关规程中的方法进行理论分析,最终得出:当空气层厚度小于5mm时,传热过程以导热和对流换热为主;大于5mm时,以辐射换热为主;0～20mm时,导热率变化非常显著,25～70mm时,导热率变化较为缓慢,且在20mm左右出现一个峰值;工程设计时可以把空气层厚度控制在20mm左右,这样有利于发挥空气层热阻的作用。Build a model,measure the internal surface temperature of double glazing whose twelve air layer thickness respectively was 10mm～70mm.According the method in“The technical regulations of building glass applications',analysed and finally got that,it's mainly thermal conduction and convective heat transfer when the thickness is less than 5mm;radiant heat transfer when more than 5mm.Conduction rate evidently varies during 0～20mm,slowly during 25～70 mm,and a peak value at 20mm.So we might set the air layer thickness around 20mm,it can help to exert the function of air layer heat resistance.

关 键 词：双层玻璃 空气层 厚度 热阻 实验分析 

分 类 号：TU111.195.1[建筑科学—建筑理论]