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Transfert de chaleur lors de la condensation de CFC-113 dans un tube avec écoulement descendant dans des tubes verticaux à surface interne augmentée.

Heat transfer during in-tube condensation of CFC-113 with downflow in vertical, internally-enhanced tubes.

Auteurs : BRIGGS A., KELEMENIS C., ROSE J. W.

Résumé

Accurate repeatable heat-transfer measurements have been made for condensation of CFC-113 with downflow inside enhanced "micro-fin" tubes. The heat transfer rate was calculated from the coolant flow rate and temperature rise. The surface temperature was found from thermocouples. One plain tube and nine enhanced tubes with different fin heights, helix angles and number of starts were tested. Enhancement ratios between 1.6 and 5.6 were found, with values depending on vapour-side temperature differance and vapour inlet velocity.

Détails

  • Titre original : Heat transfer during in-tube condensation of CFC-113 with downflow in vertical, internally-enhanced tubes.
  • Identifiant de la fiche : 1999-3411
  • Langues : Anglais
  • Source : Proceedings of the 1998 Purdue International Refrigeration Conference.
  • Date d'édition : 14/07/1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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