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Corrélations du transfert de chaleur lors de l'ébullition convective forcée de frigorigènes purs à l'intérieur de tubes à micro-ailettes.

Heat transfer correlations of forced convective boiling for pure refrigerants in micro-fin tubes.

Auteurs : CHIOU C. B., LU D. C., CHEN C. C., et al.

Type d'article : Article

Résumé

The evaporation heat transfer coefficient of pure refrigerants R-22 and R-124 in micro-fin tubes were measured at the reduced pressure of 0.15, the mass flux from 100 to 400 kg/m2 s, the flow quality from 0.1 to 0.9, and the heat flux from 5 to 20 kW/m2. The evaporation heat transfer coefficient of pure refrigerant in micro-fin tube is 1.5-3.0 times higher than that of smooth tube. In this article, the single phase forced convection heat transfer coefficient of micro-fin tube is introduced to predict the evaporation heat transfer coefficient of pure refrigerant in micro-fin tubes. The present correlations provide reasonable agreement with the experimental data. The prediction values mostly fall within ±30%. [Reprinted with permission of Elsevier. Copyright 2011.]

Détails

  • Titre original : Heat transfer correlations of forced convective boiling for pure refrigerants in micro-fin tubes.
  • Identifiant de la fiche : 30003612
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 31 - n. 5
  • Date d'édition : 04/2011
  • DOI : http://dx.doi.org/10.1016/j.applthermaleng.2010.10.031

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