Thermodynamic optimization of mechanical supports for cryogenic apparatus

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. © 1974.

Duke Authors

Cited Authors

  • Bejan, A; Jr, JLS

Published Date

  • 1974

Published In

Volume / Issue

  • 14 / 3

Start / End Page

  • 158 - 163

International Standard Serial Number (ISSN)

  • 0011-2275

Citation Source

  • SciVal