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Exergy analysis of a Gifford-McMahon cycle cryorefrigerator

✍ Scribed by M. Thirumaleshwar; S.V. Subramanyam

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 261 KB
Volume: 26
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(86)90207-9

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✦ Synopsis

Exergy or the available work energy function is a useful concept for analysing a Gifford-McMahon cycle. By definition, exergy of a state 1 is the maximum work that would be obtained in bringing the state to the dead state or ambient state for a heat engine. For a refrigerator, exergy is the minimum work required to take state 1 to ambient. In an earlier paper, Thirumaleshwar 1 presented an enthalpy-exergy chart for helium and explained the analysis of a modified Brayton cycle cryogenic refrigerator. Rangrej and Narayankhedkar 2 have given an exergy analysis of the low temperature heat pump.

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