氨-不锈钢热管恒温特性试验研究  

Research on The Performance of Ammonia-Stainless Steel Heat Pipes at Constant Temperature

作　　者：段彦军[1] 王焕光[1] 陶毓伽[1] 淮秀兰[1] 曲伟[2] 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国航天空气动力技术研究院,北京100074

出　　处：《工程热物理学报》2013年第8期1523-1526,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.50906083);国家重点基础研究发展计划(No.2011CB710705)

摘　　要：通过恒温烘烤对氨-不锈钢热管恒温特性进行了试验研究,其中烘烤温度为270℃。试验结果发现,烘烤过程中有不凝性气体产生,约占总工质质量的0.8%;不凝性气体对热管的影响只与热管工作温度有关,温度低时影响较大,温度升高影响迅速减小;此外,烘烤过程中热管表现出热管效应,与同尺寸同工况下的铝棒相比,氨-不锈钢热管传热能力优越,对温度变化反应灵敏,最高有效导热系数约为壳体材料的159倍,有效导热系数和密度之比约为壳体材料的309.9倍。Experiment was proceeded by constant temperature baking for ammonia-stainless steel heat pipe at 270℃. Noncondensable gas generated during the process, and the the mass fraction was 0.8% of total working fluid. The influence to the heat pipes of noncondensable gas was related only to the temperature at which the heat pipes worked. The influence was more obvious at lower temperature, and it would decrease rapidly while the temperature was raised. The heat pipes performed different heat pipe effect during the baking. The heat pipes had an excellent capacity of heat transfer when contrasted with a same size aluminium bar under the same experimental condition, and were very sensitive to temperature change. The highest effective thermal conductivity of the heat pipes was 159 times of that of their shell material, and the ratio of effective thermal conductivity and density was 309.9 times of that of their shell material.

关 键 词：氨-不锈钢热管 热管效应 不凝性气体 有效导热系数 相变 

分 类 号：TK124[动力工程及工程热物理—工程热物理]