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Transfert de chaleur monophasique et caractéristiques d'écoulement dans les tubes ailetés.

Single-phase heat transfer and flow characteristics of micro-fin tubes.

Auteurs : HAN D. H., LEE K. J.

Type d'article : Article

Résumé

Single-phase heat transfer and flow characteristics of micro-fin tubes were investigated experimentally. Four different tubes were used to obtain experimental heat transfer coefficients and friction factors. Proposed empirical correlations showed relatively improved predicting performance and their mean deviation and mean square root deviation were less than 6.4%. From the point of efficiency index, the tube with higher relative roughness and smaller spiral angle showed better heat transfer performance than the tube with larger spiral angle and smaller relative roughness. Heat transfer area augmentation was the main contributor to the efficiency index.

Détails

  • Titre original : Single-phase heat transfer and flow characteristics of micro-fin tubes.
  • Identifiant de la fiche : 2006-0141
  • Langues : Anglais
  • Source : Applied Thermal Engineering - vol. 25 - n. 11-12
  • Date d'édition : 08/2005

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