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Document IIF

Chute de pression et visualisation de l'écoulement diphasique de R134a à l'intérieur d'un échangeur à plaques de type chevron.

Pressure drop and visualization of adiabatic R134a two-phase flow inside a chevron type plate heat exchanger.

Auteurs : CLAESSON J., SIMANIC B.

Résumé

Two-phase flow inside a compact brazed plate heat exchanger of chevron type was experimentally investigated. The outer corrugated plate was manufactured from transparent material; hence, visual inspection of the flow has been possible. Different mass flow rates (corresponding to heat flux of 5-15 kW/m2) and thermodynamic qualities (from 0.1-0.7) have been tested. Flow structures were visually investigated and the pressure drop in the heat exchanger, including the ports, was measured. The frictional pressure drop in two-phase adiabatic flow in the corrugated channel was estimated from the measured total pressure drop and was successfully correlated using the two-phase multiplier and the Lockhart-Martinelli parameter.

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Détails

  • Titre original : Pressure drop and visualization of adiabatic R134a two-phase flow inside a chevron type plate heat exchanger.
  • Identifiant de la fiche : 2004-2740
  • Langues : Anglais
  • Source : 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Date d'édition : 17/08/2003

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