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Amélioration de la distribution diphasique de frigorigène dans le collecteur d'un système frigorifique.

Improving two-phase refrigerant distribution in the manifold of the refrigeration system.

Auteurs : WEN M. Y., LEE C. H., TASI J. C.

Type d'article : Article

Résumé

This study presents an experimental investigation to improve the two-phase refrigerant distribution in the manifold of the refrigeration (R-134a) system. The tests were conducted at the nominal inlet pressure of 173.5 kPa and mass flux of 130-145 kg/m2.s. Three different distributor configurations (Venturi tube connected with a smooth tube, Venturi tube connected with an internally-spirally micro-finned tube, and distributor within a roller) were selected. In the experiment, the effects of the outer-wall temperatures and pressures of the exits in the manifold, the cooling capacity (C) and COP on two-phase flow distribution for the present study were displayed and discussed. In order to understand that flow distribution of two-phase refrigerant in the manifold, the flow visualization at the exit manifold of the distributor was made. It was found that the Venturi tube connected with the internally-spirally micro-finned tube got the best distribution efficiency, and resulted in the best COP. [Reprinted with permission from Elsevier. Copyright, 2007].

Détails

  • Titre original : Improving two-phase refrigerant distribution in the manifold of the refrigeration system.
  • Identifiant de la fiche : 2009-0584
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 28 - n. 16
  • Date d'édition : 11/2008

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