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Effet de la fraction massique de gaz non condensable sur le transfert de chaleur lors de la condensation d'un mélange d'eau et de vapeur d'éthanol.

Effect of non-condensable gas mass fraction on condensation heat transfer for water-ethanol vapour mixture.

Auteurs : WANG S., UTAKA Y.

Type d'article : Article

Résumé

The condensation heat transfer characteristics curves for a ternary vapour mixture of water, ethanol and air (or nitrogen) for several ethanol concentrations and relatively low concentrations of air (or nitrogen) were measured. The effect of non-condensable gas on several different domains in the condensation curves was discussed. The effect of non-condensable gas in the domains controlled by the diffusion resistance and the filmwise condensation was notable; whereas that in the domain dominated by the condensate resistance of dropwise mode was remarkable. Moreover, variations due to changes in non-condensable gas concentration of several characteristics points representing the curves were discussed.

Détails

  • Titre original : Effect of non-condensable gas mass fraction on condensation heat transfer for water-ethanol vapour mixture.
  • Identifiant de la fiche : 2005-1705
  • Langues : Anglais
  • Source : JSME int. J., B - vol. 47 - n. 2
  • Date d'édition : 2004

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