二元混合工质脉管制冷特性研究  

STUDY OF PULSE TUBE REFRIGERATION PERFORMANCE WITH TWOCOMPONENT GAS MIXTURES

作　　者：甘智华[1] 余久青[1] 卢彬 余建平[1] 陈国邦[1] 

机构地区：[1]浙江大学制冷与低温工程研究所

出　　处：《低温工程》1997年第6期1-7,13,共8页Cryogenics

基　　金：国家自然科学基金

摘　　要：从制冷工质角度，在理论上分析了采用混合工质代替纯质氦以提高脉管制冷机在８０Ｋ温区制冷性能的可能性。初步的分析得到了两组二元混合工质对，一组在８０Ｋ温区附近依旧保持气态，如氦—氖、氦—氢、氢—氖；另一组在８０Ｋ温区附近处于气液两相，如氦—氮、氢—氮、氖—氮，其中，氮气的摩尔组分小于１０％。为进一步的理论和实验研究打下了基础。In order to increase the cooling capacity of a pulse tube refrigerator at 80K temperature region,the possibility of using twocomponent gas mixtures instead of pure helium is analyzed in principle in this paper.Two groups of twocomponent gas mixtures were recommended.One is heliumneon,heliumhydrogen or neonhydrogen,which remains gas state at 80K temperature region;the other is heliumnitrogen,neonnitrogen or hydrogennitrogen,which locates at two phase state at 80K temperature region when the molecular fraction of the nitrogen component is less than 10%.The further analyses in theory and experiment will be continued.

关 键 词：混合工质 脉管制冷 制冷机 

分 类 号：TB651[一般工业技术—制冷工程] TB611