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Essais expérimentaux et modélisation de la taille de l'orifice optimale d'un réfrigérateur à sorption hélium 4 à cycle fermé.

Experimental tests and modeling of the optimal orifice size for a closed cycle 4He sorption refrigerator.

Auteurs : LAU J., BENNA M., DEVLIN M., et al.

Type d'article : Article

Résumé

Closed cycle 4He sorption refrigerators are an increasingly popular choice for remote cryogenic operations. The presence of a superfluid film on the inner walls of the evaporation pot limits their performance. The authors present a simple model of the gas, film, and heat flow in a 4He sorption refrigerator, taking into account the effects of an orifice to limit superfluid film flow. The model serves as a useful guideline for optimizing cryogenic performance. They also present a diagram of hold time vs. steady state temperature as a function of the radius of the orifice and compare the model to measurements. [Reprinted with permission from Elsevier. Copyright, 2006].

Détails

  • Titre original : Experimental tests and modeling of the optimal orifice size for a closed cycle 4He sorption refrigerator.
  • Identifiant de la fiche : 2007-0931
  • Langues : Anglais
  • Source : Cryogenics - vol. 46 - n. 11
  • Date d'édition : 11/2006

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