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Etude numérique sur le transfert de chaleur laminaire de dioxyde de carbone surcritique à l'intérieur d'un tube.

Numerical study on in-tube laminar heat transfer of supercritical carbon dioxide.

Auteurs : DANG C., HIHARA E.

Résumé

Numerical calculations were carried out for supercritical carbon dioxide flowing in miniature tubes. Heat transfer coefficient and friction factor were numerically investigated for different values of tube diameter, pressure, mass flux and heat flux. When compared with a constant property flow, a large divergence from the constant value was obtained. With regard to the heating condition, reversed tendencies were confirmed. Variations of specific heat and viscosity with temperature were found. In addition, correlations that considered the cross-sectional distribution of thermophysical properties were proposed in the near-pseudocritical temperature region.

Détails

  • Titre original : Numerical study on in-tube laminar heat transfer of supercritical carbon dioxide.
  • Identifiant de la fiche : 2007-0079
  • Langues : Anglais
  • Source : ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Date d'édition : 21/05/2006

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