High efficiency 40 K single-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 ; Pan, C.Z.^1 ; Cui, C.^1 ; Wang, J.J.^1,2 ; Zhou, Y.^1,2

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: Cooling Capacity;    Gas reservoir;    High-efficiency;    Inertance tube;    Operating frequency;    Pulse tube cryocoolers;    Stirling type pulse tube cryocooler;    Stirling-type;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/278/1/012151/pdf
DOI  :  10.1088/1757-899X/278/1/012151

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A high efficiency single-stage Stirling-type coaxial pulse tube cryocooler (SPTC) operating at around 40 K has been designed, built and tested. The double-inlet and the inertance tubes together with the gas reservoir were adopted as the phase shifters. Under the conditions of 2.5 MPa charging pressure and 30 Hz operating frequency, the prototype has achieved a no-load temperature of 23.8 K with 330 W of electric input power at a rejection temperature of 279 K. When the input power increases to 400 W, it can achieve a cooling capacity of 4.7 W/40 K while rejecting heat at 279 K yielding an efficiency of 7.02% relative to Carnot. It achieves a cooling capacity of 5 W/40 K with an input power of 450 W. It takes 10 minutes for the SPTC to cool to its no-load temperature of 40 K from 295 K.