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Transfert de chaleur lors de l'ébullition nucléée de R134 sur des tubes à surface augmentée.

Nucleate boiling heat transfer of R134a on enhanced tubes.

Auteurs : RIBATSKI G., THOME J. R.

Type d'article : Article

Résumé

The present paper reports the results of an experimental investigation on saturated pool boiling heat transfer of R134a on High-Flux, Gewa-B, Turbo-CSL and Turbo-BII HP tubes. Experiments have been carried out at saturation temperatures of 5, 10 and 20°C and heat fluxes from 20 to 70 kW/m2. At most of the experimental conditions tested, an almost negligible effect of the saturation temperature on the heat transfer coefficient was found. Except for Turbo-CSL, the heat transfer coefficient presented either a slight decrease in its value or an almost constant value with increasing heat flux. The heat transfer enhancement ratios of the High-Flux, Gewa-B, Turbo-CSL and Turbo-BII HP tubes were 4.9-21.3, 2.4-5.2, 2.4-2.9 and 1.8-7.0, respectively, compared to a plain tube. [Reprinted with permission from Elsevier. Copyright, 2005].

Détails

  • Titre original : Nucleate boiling heat transfer of R134a on enhanced tubes.
  • Identifiant de la fiche : 2006-1642
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 26 - n. 10
  • Date d'édition : 07/2006

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