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Estimation des caractéristiques de transfert de chaleur sur l'ailette circulaire annulaire verticale des échangeurs de chaleur à tubes ailetés en convection forcée.

Estimation of heat-transfer characteristics on a vertical annular circular fin of finned-tube heat exchangers in forced convection.

Auteurs : CHEN H. T., HSU W. L.

Type d'article : Article

Résumé

The finite difference method in conjunction with the least-squares scheme and experimental measured temperatures is applied to predict the average heat transfer coefficient and fin efficiency on a vertical annular circular fin of finned-tube heat exchangers for various fin spacing in forced convection. The distribution of the heat transfer coefficient on the fin is assumed to be non-uniform, thus the whole annular circular fin is divided into several sub-fin regions in order to predict the average heat transfer coefficient and fin efficiency values. These two predicted values can be obtained using the present inverse scheme in conjunction with the experimental measured temperatures. The results show that the effect of the fin spacing S on the average heat transfer coefficient value can be negligible when the S value exceeds about 0.018 m. [Reprinted with permission from Elsevier. Copyright, 2007].

Détails

  • Titre original : Estimation of heat-transfer characteristics on a vertical annular circular fin of finned-tube heat exchangers in forced convection.
  • Identifiant de la fiche : 2008-2043
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 51 - n. 7-8
  • Date d'édition : 04/2008

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