Modelling and experimental study of a 700 g micro coaxial Stirling-type pulse tube cryocooler operating at 100-190 Hz

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

Li, Jiaqi^1^2 ; Tan, Jun^1^3 ; Zha, Rui^1^2 ; Zhang, Tao^1^2 ; Zhao, Bangjian^1^2 ; Zhao, Yongjiang^1^2 ; Dang, Haizheng^1^3

State Key Laboratory of Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai

200083, China^1

University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing

100049, China^2

Shanghai Boreas Cryogenics Co. Ltd, 1388 Shuidian Road, Shanghai

200434, China^3

关键词: Cooling performance;    Cooling power;    Gas reservoir;    Inertance tube;    Irreversible loss;    Regenerator matrices;    Stirling type pulse tube cryocooler;    Thermal process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012031/pdf
DOI  :  10.1088/1757-899X/502/1/012031

来源: IOP

【 摘 要 】

This paper presents the modelling and experimental study of a 700 g micro coaxial Stirling-Type pulse tube cryocooler (SPTC) operating at 100-190 Hz. Neither double-inlet nor multi-bypass is used while the inertance tube with a gas reservoir becomes the only phase-shifter. A two-dimensional axis-symmetric CFD model of the micro SPTC is developed, in which the effect of frequency on the thermal process and cooling performance is studied in detail. Mixed regenerator matrices are used to decrease the irreversible loss, and a variety of approaches to minimize the overall cooler mass are attempted. The experimental results show that the SPTC could produce cooling power of 1.1 W at 77 K with an input power of 60 W.