热线法测试隔热耐火材料高温导热系数的实验研究  

Experimental Research on High Temperature Thermal Conductivity of Insulating Refractory with Hot-Wire Method

作　　者：雒彩云[1] 陶冶[1] 杨莉萍[1] 徐子君[1] 钟秋[1] 

机构地区：[1]中国科学院上海硅酸盐研究所无机材料分析测试中心,上海200050

出　　处：《建筑节能》2014年第10期49-53,共5页BUILDING ENERGY EFFICIENCY

摘　　要：在简述了不同导热系数测试方法的基础上,提出了用非稳态热线法测试隔热耐火材料高温导热系数的方法,并针对目前国内高温导热系数的热线法测试装置比较空缺的情况,对现有热线法导热仪进行升级改造,同时,采用FLUENT软件对测量区温场进行模拟计算。改造后的仪器,测试温度范围从最高500℃提高到1000℃,测量时间缩短了近1/2。经过标样测试与数据比对,该装置具有较好的准确度和重复性,达到了预期目标,可应用于科研及工程材料测试。Based on the analysis of different thermal conductivity test methods, the unsteady hot-wire test method was utilized to test high temperature thermal conductivity of insulating refractory. In view of the domestic vacancy of high temperature thermal conductivity tester, the reconstruction of existing tester was conducted. FLUENT is used for simulation temperature of measuring field. After reconstruction, the highest test temperature was increased from 500 ℃ to 1000 ℃, test time was reduced by half at least. The test results for standard samples show that the established device has good accuracy and repeatability, the device will achieve the desired target, improve the test efficiency, and can be applied to scientific research and engineering materials test.

关 键 词：热线法 高温导热系数 隔热耐火材料 

分 类 号：TU111.2[建筑科学—建筑理论]