基于传输管的三级级联脉管制冷机实验研究  

Experimental study on a three-stage cascade pulse tube cryocooler with transmission tube

作　　者：赵钦宇[1] 王龙一[1] 甘智华[1,2,3] 金泽远 Zhao Qinyu Wang Longyi Gan Zhihua Jin Zeyuan(Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China Key Laboratory of Refrigeration and Cryogenic Technology of Zhejiang Province,Hangzhou 310027 ,China National Quality Inspection Center of Refrigeration Equipment（ Henan）, Minquan 476800 ,Henan Province of China)

机构地区：[1]浙江大学制冷与低温研究所,杭州310027 [2]浙江省制冷与低温技术重点实验室,杭州310027 [3]国家冷冻冷藏设备质量检验中心(河南),河南民权476800

出　　处：《低温工程》2017年第4期14-20,共7页Cryogenics

基　　金：国家自然科学基金(No.51376157);高等学校博士学科点专项科研基金(20130101110098)

摘　　要：为提高脉管制冷机制冷效率,通过引入一根特殊设计的传输管,将本应在前一级脉管制冷机脉管热端耗散声功回收,理论上多级级联脉管制冷机制冷效率可达卡诺效率。基于该理论,在已有两级级联脉管制冷机基础上串入第三级制冷机。实验结果显示,该三级级联脉管制冷机最高可获得253.6 W@233 K制冷量,较单级制冷机制冷效率增加39.9%,制冷效率进一步趋于卡诺效率。To improve the cooling efficiency of pulse tube cryocooler（PTC） , a well-designed transmis- sion tube was introduced to recover the dissipated acoustic power at the warm end of the former PTC. The efficiency of the multi-stage cascade PTC was capable to approach Carnot efficiency. Based on this theory, a third PTC was connected in series with the existing two-stage cascade PTC. Experiments showed that the cooling power of the three-stage cascade PTC was 253.6W@ 233K, which was improved by 39.9% com- pared with that of the single-stage PTC. This moved the PTC＇ s efficiency forward one more step to approach Carnot efficiency.

关 键 词：传输管 卡诺效率 脉管制冷机 声功回收 三级级联 

分 类 号：TB651[一般工业技术—制冷工程]