真空颗粒系统有效导热系数测量试验台研制及试验  

Measurement system and experiment study of the effective thermal conductivity of granular system in a vacuum

作　　者：崔金生[1] 侯绪研[1] 邓宗全[1] 潘万竞 姜生元[1] 

机构地区：[1]哈尔滨工业大学宇航空间机构及控制中心,哈尔滨150001

出　　处：《吉林大学学报（工学版）》2016年第2期457-464,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51105092)

摘　　要：基于稳态热流计法,研制了可实现不同真空环境和温度下测试颗粒系统有效导热系数的试验台,并基于此试验台对HIT-LS1#型模拟月壤在不同真空度和不同温度下进行了有效导热系数测定试验。试验结果显示:模拟月壤的有效导热系数随着温度的升高而增大,并随着真空度的提高而减小。真空度对颗粒系统的有效导热系数存在较大影响,尤其是在高真空的情况下。Based on steady-state heat metering method,a measurement system is developed,which can be used to test the effective conductivity of a granular system under different temperature and vacuum degree.Using this measurement system,experiments for HIT-LS1# lunar soil simulant are conducted.The results show that the effective thermal conductivity of the lunar soil simulant increases with temperature,and decreases with the increase in vacuum degree.Vacuum degree has on obvious impact on the effective thermal conductivity,especially in the case of high vacuum.

关 键 词：工程热物理 试验台研制 热流计法 有效导热系数 颗粒系统 模拟月壤 真空 

分 类 号：TK121[动力工程及工程热物理—工程热物理]