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Thermodynamic optimization of mechanical supports for cryogenic apparatus

โœ Scribed by A. Bejan; J.L. Smith Jr

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
448 KB
Volume
14
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

The minimum theoretical refrigerator power for cooling mechanical supports for a cryogenic apparatus is determined with the calculus of variations. A mathematical approach is developed that can be used to evaluate the thermal performance of any mechanical support which has fixed geometry.

Four practical, non-optimum cooling arrangements are compared with the minimum power case. The comparison shows that a smaller refrigerator power is required when continuous cooling is provided at intermediate temperatures along the conducting support. A combination of two gas streams in series closely approximates the thermodynamically optimum cooling arrangement.

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