Open AccessDesign of a two-stage gas-coupled high-frequency pulse tube cryocooler working around 4 K
Author(s) -
Xuming Liu,
Liubiao Chen,
Junjie Wang,
Yuan Zhou
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/755/1/012039
Subject(s) - cryocooler , pulse tube refrigerator , coaxial , materials science , helium , tube (container) , liquid helium , stage (stratigraphy) , cryogenics , cooling capacity , thermal , work (physics) , nuclear engineering , mechanical engineering , acoustics , thermodynamics , physics , engineering , composite material , regenerative heat exchanger , atomic physics , geology , paleontology , heat exchanger
High-frequency pulse tube cryocooler have unique advantages for aerospace and ground applications. However, it is difficult to obtain lower cooling temperature: to obtain the liquid helium temperature, three-stage or four-stage structure by thermal coupling are currently used. In order to further improve the compactness, a two-stage gas-coupled high-frequency multi-bypass coaxial pulse tube cryocooler has been designed. The simulation results indicate that the designed cryocooler can provide a cooling capacity of 25 mW@4.2 K with 416 W input electrical work. The interaction between structural parameters and operating conditions, as well as some preliminary test results will be presented in this paper.