轻型种植土等效导热系数及热扩散率的实验测试  

Experimental study on the equivalent thermal conductivity and thermal diffusivity for light plant soil

作　　者：梅胜[1] 龙华[1] 杨晚生[1] 

机构地区：[1]广东工业大学土木与交通工程学院,广东广州510006

出　　处：《新型建筑材料》2013年第2期77-79,共3页New Building Materials

基　　金：广东省科技计划国际合作项目(2011B050400032);住房和城乡建设部科技项目(2011-k1-28);广州市科普科技项目(2010KP046);广州市番禺区科技计划项目(2011-Z-01-37);广东省建筑节能与应用技术重点实验室项目(2011048)

摘　　要：利用DRM-II导热系数测试仪对研制的轻型种植土在不同含湿状态下的等效导热系数及热扩散率进行了测试,并分析比较了等效导热系数及热扩散率,实验测试值与其理论计算值之间的相对误差,得到了轻型种植土在不同加热状态下等效导热系数的变化规律,为其工程应用和热工性能评价提供了基本实验数据。In this. paper the equivalent thermal conductivity and thermal diffusivity for light-plant2soil under different mois- ture content conditions are experimented by using the DRM-II thermal conductivity tester. The relative error between the experi- mental test value and the theory calculated value for the equivalent thermal conductivity and thermal diffusivity are compared and analyzed by comparing the results, and the change rules of the equivalent thermal conductivity in different heating states are de- rived. The results can provide basic experimental data for its engineering application and thermal performance evaluation.

关 键 词：轻型种植土 含湿率 等效导热系数 热扩散率 

分 类 号：TU576[建筑科学—建筑技术科学]