玄武岩纤维在低温下的传热特性试验研究  

An experiment of heat transfer characteristic of basalt fiber at low temperature

作　　者：孙李宁[1] 陈叔平[1] 陈光奇[2] 李慧燕[1] 苏海林[1] 王贵仁[1] 张晓曦[1] 温永刚[2] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050 [2]兰州物理研究所真空低温技术与物理国家级重点实验室,兰州730000

出　　处：《低温工程》2008年第3期35-37,60,共4页Cryogenics

基　　金：真空低温技术与物理国家级重点实验室基金(9140C550801)资助

摘　　要：为研究多孔介质在低温下的传热特性,进行了抽真空条件下试验件中填充和不填充玄武岩纤维的低温传热试验。在两种状态下分别测得了温度变化曲线、系统压力变化曲线和质量变化曲线。对比分析后发现,在低温抽真空条件下填充玄武岩纤维对试验件在传热方面有明显的强化作用,能有效降低并稳定试验件的温度,但液氮的消耗量有所增加。To study the heat transfer of porous media at low temperature, two experiments with test element filled and unfilled with basalt fiber were completed under vacuumizing and cryogenic conditions. The corresponding curves of temperature, pressure and mass were present. The analysis of the curves showed that basalt fiber can clearly enhance heat transfer, effectively lower and stabilize the temperature of test element. But the consumption of liquid nitrogen increased.

关 键 词：玄武岩纤维 多孔介质 液氮 

分 类 号：TB611[一般工业技术—制冷工程]