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Document IIF

Etude expérimentale sur la distribution de l'écoulement adiabatique diphasique dans les échangeurs de chaleur à microcanaux.

Experimental study of two-phase adiabatic flow distribution in small-channel heat exchangers.

Auteurs : POGGI F., MACCHI-TEJEDA H., MARECHAL A., et al.

Résumé

Small-channel heat exchangers are widely used for car air conditioning. However, information about their behaviour remains scarce. An experimental device was built to characterize the distribution of two-phase flows in a small-channel heat exchanger and to measure the singular and regular pressure losses. Both were studied with horizontal flow and vertical down-flow through the header. A transparent polycarbonate test section comprised a 16-mm diameter header connected to 8 multi-port flat tubes. The mass flux range was between 15 and 650 kg/(m2.s) in the manifold and between 100 and 3000 kg/(m².s) in the small channels. The range of vapour quality values at the test section inlet was between 0.1 and 0.9. The two-phase refrigerant was condensed at the outlet of each flat tube in order to measure each flow rate separately. The refrigerant distribution was studied in single and two-phase flows. The pressure losses were measured.

Documents disponibles

Format PDF

Pages : ICR07-B1-647

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental study of two-phase adiabatic flow distribution in small-channel heat exchangers.
  • Identifiant de la fiche : 2007-2512
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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