Numerical study of a novel single-stage Vuilleumier type pulse tube cryocooler

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Wang, Jue^1^2 ; Pan, Changzhao^1 ; Chen, Liubiao^1 ; Xi, Xiaotong^1^2 ; Wu, Xianlin^1^2 ; Wang, Junjie^1^2 ; Zhou, Yuan^1

CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Beijing

100049, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

关键词: Cooling power;    Double inlet;    Moving parts;    Operating mechanism;    Pulse tube cryocoolers;    Single stage;    Stirling cryocoolers;    Thermal compressors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012042/pdf
DOI  :  10.1088/1757-899X/502/1/012042

来源: IOP

【 摘 要 】

The Vuilleumier cryocooler (VMC) is a novel kind of Stirling cryocooler driven by thermal compressor. To realize no moving parts at the cold end of VMC, this paper presents a study of the single stage Vuilleumier-Type pulse tube (VM-PTC) cryocooler driven by thermal compressor. First, the structure and numerical model of VM-PTC are introduced. Then, the operating mechanism and performance of cold phase shifter including capillary tubes and double-inlets are studied. At last, a preliminary experiment is carried out to know about the practical performance of the single-stage VM-PTC. It can obtained no-load temperature of 12.1 K and 0.7 W cooling power at 20 K by using 46 W precooling power at 77 K.