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Effets d'un débit de gaz continu sur les performances de réfrigérateurs biétagés, à tubes à pulsation, fonctionnant à 4 K.

Effects of direct-current gas flow on performance of two-stage 4 K-pulse tube coolers.

Auteurs : WANG C., THUMMES G., HEIDEN C.

Type d'article : Article

Résumé

Direct-current flow effects in a 4 K pulse tube cooler were studied by numerical analysis and experiment. Numerical predictions show that a negative direct-current flow from the hot end of the pulse tube to the inlet of regenerator has two positive effects on the cooler performance: increasing cooling capacity of the pulse tube; and dissipating the enthalpy flow at the hot end of the pulse tube. Several functions which cause direct-current flow, such as valve timing and geometry of double-inlet valve and direct-current flow bypass, were tested in the two-stage 4 K pulse tube cooler.

Détails

  • Titre original : Effects of direct-current gas flow on performance of two-stage 4 K-pulse tube coolers.
  • Identifiant de la fiche : 1999-3334
  • Langues : Anglais
  • Source : Cryogenics - vol. 38 - n. 6
  • Date d'édition : 06/1998

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