多孔材料传冷特性的对比试验  

Contrastive experiment on heat transfer characteristic of porous materials

作　　者：温永刚[1] 张晓曦[2] 陈光奇[1] 孙李宁[2] 李慧燕[2] 

机构地区：[1]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 [2]兰州理工大学石油与化工学院,兰州730050

出　　处：《低温工程》2008年第2期14-17,共4页Cryogenics

基　　金：真空低温技术与物理国防科技重点实验室“毛细材料蓄液性能研究项目”(9140C550801)

摘　　要：通过试验对3种不同孔径的多孔纤维材料传冷特性进行了对比分析,试验结果证明材料的传冷特性与其纤维平均直径有着密切的关系。随着多孔材料纤维平均直径的减小,其蓄液传冷特性不断增强。经过试验测温比较,纤维平均直径最小的微细玻璃纤维在低温下具有最佳蓄液传冷特性。Three different kinds of porous materials were studied by experiment. The experiment result testified that there was a consanguineous relation between heat transfer characteristic and fiber mean diameter. With the decrease of porous materials＇ fiber mean diameter, the capacity of cumulating liquids and heat transfer characteristic were enhanced continuously. By measuring temperature and comparing each other in experiment, it was found that the tenuous fiberglass which has the most minimal fiber mean diameter possessed the optimal heat transfer characteristic.

关 键 词：多孔材料 对比试验 传冷特性 

分 类 号：TB64[一般工业技术—制冷工程]