The study on a gas-coupled two-stage stirling-type pulse tube cryocooler

Cryogenic Engineering Conference 2017

材料科学;物理学

Wu, X.L.^1,2 ; Chen, L.B.^1,2 ; Zhu, X.S.^1,2 ; Pan, C.Z.^1 ; Guo, J.^1 ; Wang, J.J.^1,2 ; Zhou, Y.^1

Chinese Academy of Sciences Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Beijing

100190, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

关键词: Charge pressure;    Co-axial structures;    Cooling Capacity;    Cooling performance;    Cooling temperature;    End temperatures;    Operating frequency;    Stirling type pulse tube cryocooler;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012146/pdf
DOI  :  10.1088/1757-899X/278/1/012146

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A two-stage gas-coupled Stirling-type pulse tube cryocooler (SPTC) driven by a linear dual-opposed compressor has been designed, manufactured and tested. Both of the stages adopted coaxial structure for compactness. The effect of a cold double-inlet at the second stage on the cooling performance was investigated. The test results show that the cold double-inlet will help to achieve a lower cooling temperature, but it is not conducive to achieving a higher cooling capacity. At present, without the cold double-inlet, the second stage has achieved a no-load temperature of 11.28 K and a cooling capacity of 620 mW/20 K with an input electric power of 450 W. With the cold double-inlet, the no-load temperature is lowered to 9.4 K, but the cooling capacity is reduced to 400 mW/20 K. The structure of the developed cryocooler and the influences of charge pressure, operating frequency and hot end temperature will also be introduced in this paper.