EFFECT OF FREQUENCY ON LOSSES IN A 77K MINIATURE PNEUMATIC STIRLING CRYOCOOLER

Authors

  • GengChen Liu (Corresponding Author) Department of Refrigeration and Cryogenic Engineering, Shanghai Ocean University, Shanghai 201306, China
  • AnKuo Zhang Department of Refrigeration and Cryogenic Engineering, Shanghai Ocean University, Shanghai 201306, China
  • Bo Yu Cryocooler Development Department, Zhejiang JueXin Microelectronics Co, Ltd, Lishui 323000, Zhejiang, China
  • YangPing Zeng Cryocooler Development Department, Zhejiang JueXin Microelectronics Co, Ltd, Lishui 323000, Zhejiang, China
  • Shu Wang Cryocooler Development Department, Zhejiang JueXin Microelectronics Co, Ltd, Lishui 323000, Zhejiang, China

Keywords:

Stirling cryocooler, Frequency, Losses, Effect, Pneumatic, Mid-wave infrared detector

Abstract

This paper investigates the impact of frequency on the losses within a 77K miniature pneumatic Stirling cryocooler. Low-temperature cryocoolers are essential for providing a low-temperature working environment for high-performance cooled thermal imaging detectors. Stirling cryocoolers can achieve a higher relative Carnot efficiency under low heat load conditions. By establishing a one-dimensional numerical model and analyzing the mechanisms of various internal losses, this study examines the trends of internal energy loss within different components as a function of working frequency, ultimately determining the optimal frequency for the Stirling cryocooler. The results indicate that flow resistance loss, non-ideal heat transfer loss, axial conduction loss, and shuttle loss are the primary loss types in miniature pneumatic Stirling cryocoolers. Experimental testing and analysis confirm the accuracy of the numerical simulation results and demonstrate the performance of the cryocooler at different frequencies. The cryocooler can achieve a cooling capacity of 905 mW@77 K@ 24.2 Win at its optimal operating condition. This study provides a theoretical basis and experimental support for the design and optimization of miniature Stirling cryocoolers.

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Published

2024-01-01

Issue

Vol. 2 No. 2 (2024)

Section

Research Article

DOI:

https://doi.org/10.61784/wjer3006

How to Cite

Liu, G., Zhang, A., Yu, B., Zeng, Y., Wang, S. (2024). Effect Of Frequency On Losses In A 77K Miniature Pneumatic Stirling Cryocooler. Eurasia Journal of Science and Technology, 2(2), 44-53. https://doi.org/10.61784/wjer3006