The effects of the clearance in the cold finger on the performance of the Stirling refrigerator

Yong Ju Hong, Deuk Yong Koh, Seong Je Park, Hyo Bong Kim, Young Don Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Stirling refrigerator has been widely used for the cooling of the infrared and cryo-sensor, The Stirling refrigerator has the clearance in the compressor and cold finger. The cooling capacity of the Stirling refrigerator comes from the relation of the pressure in the expansion space and motion of displacer. In the radial clearance of the cold finger, the parasitic dynamic losses from the leakage flow and shuttle heat losses are inevitably occurred. Therefore, to get the maximum performance of the refrigerator, the radial clearance should be optimized. In this study, the influences of the radial clearance on the performance were investigated by numerical simulation. The results show the effects of the radial clearance, operating frequency and the stroke of the displacer on the cooling performance of the Stirling refrigerator (the enthalpy flow through the regenerator and clearance, the shuttle loss).

Original languageEnglish
Title of host publicationProceedings of the Twentieth International Cryogenic Engineering Conference, ICEC 20
Pages141-144
Number of pages4
Publication statusPublished - 2005 Dec 1
EventTwentieth International Cryogenic Engineering Conference, ICEC 20 - Beijing, China
Duration: 2004 May 112004 May 14

Publication series

NameProceedings of the Twentieth International Cryogenic Engineering Conference, ICEC 20

Other

OtherTwentieth International Cryogenic Engineering Conference, ICEC 20
CountryChina
CityBeijing
Period04/5/1104/5/14

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Hong, Y. J., Koh, D. Y., Park, S. J., Kim, H. B., & Choi, Y. D. (2005). The effects of the clearance in the cold finger on the performance of the Stirling refrigerator. In Proceedings of the Twentieth International Cryogenic Engineering Conference, ICEC 20 (pp. 141-144). (Proceedings of the Twentieth International Cryogenic Engineering Conference, ICEC 20).