Partager

Document IIF

Transfert de chaleur lors de l'ébullition en écoulement du mélange de frigorigènes HFO-1234yf et R32 à l'intérieur d'un tube lisse horizontal.

Flow boiling heat transfer of the refrigerant mixture HFO-1234yf and R32 in a smooth horizontal tube.

Numéro : pap. ID: 892

Auteurs : LI M., DANG C., HIHARA E.

Résumé

In this study, the characteristics of the flow boiling heat transfer of an HFO-1234yf/R32 (80/20 by mass%) refrigerant mixture are experimentally investigated. Experiments were conducted under a wide range of heat fluxes from 6 to 24 kW/m2 and mass fluxes from 100 to 400 kg/m2s in a horizontal stainless steel tube with an inner diameter of 4 mm. The measured heat transfer coefficients of the refrigerants mixture were compared with those in a 2 mm tube and pure HFO-1234yf in a 4 mm tube. Visual observation of the flow regime was also conducted. The results revealed that the heat transfer coefficients of the mixture were 30-50% lower than that of pure HFO-1234yf at different mass fluxes and heat fluxes. The heat flux thus has a larger influence on the heat transfer coefficient of the mixture in the 4 mm tube than that in the 2 mm tube.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Flow boiling heat transfer of the refrigerant mixture HFO-1234yf and R32 in a smooth horizontal tube.
  • Identifiant de la fiche : 30001749
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

Liens


Voir d'autres communications du même compte rendu (569)
Voir le compte rendu de la conférence

Indexation