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A Computer Analysis of Regenerator Losses in a Stirling Cryocooler with Multiple Expansion Stages
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English
Abstract
An Ideal Adiabatic analysis of a Stirling cryocooler with multiple expansion stages has been presented previously. In this analysis the compression space and the various expansion spaces are adiabatic, the heat exchangers are isothermal and the regenerators are ideal. This paper is an extension of that analysis to evaluate the enthalpy losses associated with the interstage regenerators. The regenerator effectiveness is defined in terms of the total unidirectional heat flow from the regenerator matrix to the working gas. A new definition of regenerator figure-of-merit is proposed for the intermediate expansion stages based on a stage energy balance, and its evaluation and uses in design are discussed. The analysis of a typical three expansion stage cryocooler is presented.
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Urieli, I. and Kuo-Chiang, T., "A Computer Analysis of Regenerator Losses in a Stirling Cryocooler with Multiple Expansion Stages," SAE Technical Paper 929038, 1992, https://doi.org/10.4271/929038.Also In
References
- Keung C.S. Lindale E. “Effects of leakage through clearence seals on the performance of a 10K Stirling-cycle refrigerator” NBS SP-698 September 1984 127 134
- Urieli I. Walker G. “An ideal adiabatic analysis of a Stirling cryocooler with multiple expansion stages” Low Temperature Engineering and Cryogenics Conference Southampton, England, UK July 1990
- Urieli I. Berchowitz D.M. “Stirling Cycle Engine Analysis” Adam Hilger Ltd Bristol, England, UK 1984