氢氦混合工质脉管制冷性能研究  

INVESTIGATION ON PULSE TUBE REFRIGERATION WITH HYDROGEN AND HELIUM MIXTURES

作　　者：蒋彦龙[1] 陈国邦[1] 黄永华[1] 甘智华[1] 包锐[1] 

机构地区：[1]浙江大学制冷与低温研究所,杭州310027

出　　处：《低温工程》2004年第1期22-26,48,共6页Cryogenics

基　　金：教育部高等学校博士学科点专项科研基金(20010335010);国家自然科学基金(50106013);德国学术交流中心(DAAD)资助

摘　　要：由于氢气具有优越的传热和流动特性,有望减少脉管制冷机回热器的流动和传热损失,从而可获得高于纯氦工质的制冷性能。从氢组分对循环热力学性能、流体流动与传热性能等因素的影响角度出发,开展了氢一氦混合工质脉管制冷性能研究,并在30K温区进行了实验验证,获得了比纯氦更好的制冷性能。A better performance of pulse tube coolers ( PTC ) could be possibly achieved by using hydrogen and helium mixture as working fluid than pure helium, because of the excellent heat transfer and flow characteristics of hydrogen, which improves the performance of the regenerator. Based on the effect of the hydrogen on the thermodynamic performance, heat transfer and flow characteristics of the regenerator, the performance of the PTC at 30 K with hydrogen and helium mixture is investigated both in theory and by experiments , and a better performance than that of pure helium has been obtained.

关 键 词：氢氦混合工质 脉管制冷机 回热器 传热特性 流动特性 

分 类 号：TB651[一般工业技术—制冷工程]