Investigation of a coaxial Stirling-type pulse tube cryocooler with the cooling capacity of 600 W at 77 K

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

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

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: Carnot efficiency;    CFD modeling;    Cooling Capacity;    Cooling performance;    Flow straightener;    Linear compressors;    Stirling type pulse tube cryocooler;    Turbulence flow;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012032/pdf
DOI  :  10.1088/1757-899X/502/1/012032

来源: IOP

【 摘 要 】

This paper conducts the investigation of a coaxial Stirling-Type pulse tube cryocooler (SPTC) with the cooling capacity of 600 W at 77 K, in which a two-dimensional CFD model is established and the effects of the flow are studied. With the aimed high cooling capacity, the flow straighteners at both inlet and outlet of the pulse tube become crucial to ensure the cooling performance by minimizing the turbulence flows in it. The interaction of the pulse tube cold finger and the linear compressor is investigated in view of that the match between them plays an important role in improving the cooling performance. In the experiment, the SPTC has a cooling capacity of 580 W at 77 K with the relative Carnot efficiency of 12%.