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Document IIF

Effet des paramètres géométriques et dynamiques sur la répartition de R22 en écoulement diphasique dans les tubes ramifiés.

Effect of geometric and dynamic parameters on the two-phase flow distribution of R22 in branch tubes.

Auteurs : TAE S. J., CHO K.

Résumé

The study investigates the two-phase flow characteristics of refrigerant R22 in T-branch with horizontal and vertical inlet tube. The key experimental parameters were the orientation of inlet and branch tubes (horizontal, vertical upward and vertical downward), diameter ratio of branch tube to inlet tube, inlet mass flux and inlet quality. Predicted pressure profile agreed with the measured data within 25.4%. The flow distribution ratio decreased as the mass flux increased. The flow distribution ratio decreased by 12-25% as the tube diameter ratio decreased from 1 to 0.61, and decreased by 38-47% as the orientation of branch changed from horizontal to vertical upward for horizontal inlet tubes. As the orientation of inlet tube changed from horizontal to vertical upward for horizontal branch, the flow distribution ratio increased by 15-68%, whereas it changed from horizontal to vertical downward, the flow distribution ratio decreased by 19-45% due to the gravity effect.

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Détails

  • Titre original : Effect of geometric and dynamic parameters on the two-phase flow distribution of R22 in branch tubes.
  • Identifiant de la fiche : 2004-2215
  • Langues : Anglais
  • Source : 21st IIR International Congress of Refrigeration: Serving the Needs of Mankind.
  • Date d'édition : 17/08/2003

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