Thermodynamic characteristics of a single-stage stirling-type pulse tube cryocooler capable of 1220 W at 77 K with two cold fingers driven by one linear compressor

Renjun Xue, Jun Tan, Bangjian Zhao, Yongjiang Zhao, Han Tan, Shiguang Wu, Yujia Zhai, Dong Ma, Dirui Wu and Haizheng Dang

Energy, 2023, vol. 278, issue PB

Abstract: This paper conducts the thermodynamic analysis and experimental verification of a single-stage Stirling-type pulse tube cryocooler (SPTC) with the configuration of two cold fingers driven by one linear compressor, achieving the kW-class cooling capacity at 77 K. The internal oscillating mass and flow, heat transfer, and phase variation characteristics are analyzed for the design with the aid of CFD. Meanwhile, the regenerator filled with mixed matrices for optimizing the uniformity of its internal temperature distribution is also theoretically and experimentally investigated. Thermodynamic features of gas parcels oscillating in different parts of the cold finger are studied to clarify the internal working mechanism from the perspectives of movement, p–v, and T–s characteristics. The developed SPTC typically provides a cooling power of 1220 W at 77 K with a relative Carnot efficiency of 16.7%. The experimental and simulation results are compared, and fairly good consistencies are observed.

Keywords: Single-stage stirling-type pulse tube cryocooler; Thermodynamic characteristics; CFD modeling; Experimental verification; 1220 W at 77 K (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:278:y:2023:i:pb:s0360544223013622

DOI: 10.1016/j.energy.2023.127968

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