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Nouvelles mesures de transfert de chaleur à ébullition libre avec des hydrocarbures et d'autres substances organiques pour la mise à jour de la méthode de calcul VDI-Heat Atlas.

New measurements of pool boiling heat transfer with hydrocarbons and other organics for update of VDI-Heat Atlas calculation method.

Auteurs : GORENFLO D., KOTTHOFF S., CHANDRA U.

Résumé

Reliable prediction of nucleate pool boiling heat transfer is important. As a theoretically consistent calculation method for the heat transfer coefficient alpha in nucleate boiling does not yet exist, the predictive methods for alpha available at present are empirical or semi-empirical, particularly for heat transfer conditions relevant in practice. One of these is the method proposed in VDI-Heat Atlas that will be completely revised in the near future. In the course of this revision, new experiments of pool boiling heat transfer from a single horizontal copper tube (8 mm O.D.) to hydrocarbons and alcohols have been performed within wide ranges of saturation pressure and heat flux. The results confirm the outlines of the calculation method but also the common trend of other recent measurements indicating that some of the empirical correlations included in the calculation method should be updated.

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Format PDF

Pages : 2004-2

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    20 €

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Détails

  • Titre original : New measurements of pool boiling heat transfer with hydrocarbons and other organics for update of VDI-Heat Atlas calculation method.
  • Identifiant de la fiche : 2005-2485
  • Langues : Anglais
  • Source : Natural Working Fluids 2004: 6th IIR-Gustav Lorentzen Conference
  • Date d'édition : 01/08/2004

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