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Document IIF

Transfert de chaleur en ébullition libre à partir d'un tube horizontal recouvert de céramique d'oxyde.

Pool boiling heat transfer from a horizontal tube coated with oxide ceramics.

Auteurs : ZHOU X., BIER K.

Type d'article : Article, Article de la RIF

Résumé

Pool boiling heat transfer from a horizontal copper tube coated with 0.2 mm of aluminum oxide-titanium oxide ceramics has been investigated for several pure fluids (refrigerants and hydrocarbons) and three propane/n-butane mixtures. The heat transfer coefficient shows a similar dependence on heat flux and normalized saturation pressure as with a metallic heating tube. At normalized saturation pressures higher or equal to 0.1, the absolute values of the heat transfer coefficient are just as high as for a sandblasted copper tube of similar surface roughness and at lower saturation pressures even higher. The negative influence of the low thermal conductivity of the ceramics is completely compensated or even overcompensated by the positive influence of the microstructure which results in a higher nucleation site density. This is especially effective in pool boiling of mixtures.

Documents disponibles

Format PDF

Pages : 552-560

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 : Pool boiling heat transfer from a horizontal tube coated with oxide ceramics.
  • Identifiant de la fiche : 1998-2208
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 20 - n. 8
  • Date d'édition : 12/1997

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