线性压缩机驱动的混合工质微型节流制冷机  

A Mixed-refrigerant Miniature Joule-Thomson Cooler Driven by a Linear Compressor

作　　者：曹海山 孟庆航 童欣 刘碧强 王晓涛[3] Cao Haishan;Meng Qinghang;Tong Xin;Liu Biqiang;Wang Xiaotao(Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, China;Kunming Institute of Physics, Kunming, 650223, China;Technical Institute of Physics and Chemistry, Chinese Academy of Science, Beijing, 100190, China)

机构地区：[1]清华大学能源与动力工程系,北京100084 [2]昆明物理研究所,昆明650223 [3]中国科学院理化技术研究所,北京100190

出　　处：《制冷学报》2022年第1期74-80,共7页Journal of Refrigeration

基　　金：国家自然科学基金(52076115)资助项目;北京市自然科学基金(3212019)项目资助。

摘　　要：很多电子器件在低温环境下工作具有更强的性能,但低温电子器件的广泛应用仍受到制冷技术微型化落后的牵制。本文研究了一种基于多元混合工质的闭式节流制冷系统,该系统由Hampson型微型节流制冷机与线性压缩机相结合,工质采用摩尔浓度为39%甲烷/20%乙烷/41%异丁烷三元混合物,实验研究了制冷机在不同工况条件下的降温性能。结果表明:制冷机在0.10~1.77 MPa和0.14~1.90 MPa压力条件下均可实现165 K的制冷温度,在0.36~1.73 MPa和0.18~1.36 MPa压力条件下均可实现198 K的制冷温度。该系统结构紧凑,有利于促进低温电子器件在国防军事、空间科学和生物医疗等领域的应用。Many electronic devices can benefit from operating at low temperatures.However,the widespread use of cryogenic electronic devices is limited by the miniaturization of cryocoolers.In this study,a closed Joule-Thomson(JT)cooling system based on a multicomponent mixture was investigated.The system comprised a Hampson-JT microcooler and a linear compressor.The working fluid was a ternary mixture with a molar concentration of 39%methane,20%ethane,and 41%isobutane.The cooling performance of a refrigerator under different conditions was studied experimentally.The results show that the microcooler can achieve a cold-end temperature of 165 K under 0.10-1.77 MPa and 0.14-1.90 MPa pressure,and 198 K under 0.36-1.73 MPa and 0.18-1.36 MPa pressure.The compact structure of the cooling system promotes the application of cryogenic electronic devices in the fields of military,space science,and biomedicine.

关 键 词：制冷机 节流效应 混合工质 线性压缩机 

分 类 号：TB611[一般工业技术—制冷工程] TB651