A 15K two-stage gas-coupled Stirling-type pulse tube cryocooler

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

Wu, Xianlin^1^2 ; Chen, Liubiao^1^2 ; Liu, Xuming^1^2 ; Wang, Jue^1^2 ; Zhou, Yuan^1^2 ; Wang, Junjie^1^2

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: Coaxial structures;    Cooling Capacity;    End temperatures;    Experimental test;    Linear compressors;    Pulse tube cryocoolers;    Stirling type pulse tube cryocooler;    Stirling-type;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012041/pdf
DOI  :  10.1088/1757-899X/502/1/012041

来源: IOP

【 摘 要 】

A gas-coupled two-stage Stirling-Type coaxial pulse tube cryocooler (SPTC) driven by a dual opposed-piston configuration linear compressor was designed and experimental test. Both of the two stages adopted coaxial structure for compactness. At the cold end of first stage, a part of working gas was introduced to the regenerator of second stage, while the others were returned to the pulse tube of the first stage. A lowest temperature of 7.3 K and 0.3 W/15 K cooling capacity can be achieved with 250 W PV power by simulation. At present, a lowest temperature of 8.1 K and 0.56 W/15 K cooling capacity can be achieved with 600 W the input power. The influence of the frequency, amplitude of the positon and the hot end temperature were studied. This paper presents the simulation results and primary test results of the designed cryocoolers.