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Effet de la géométrie des ailettes sur la condensation d'un mélange de R123 et de R134a en écoulement sur un faisceau de tubes horizontaux à ailettes basses en quinconce.

Effect of fin geometry on condensation of downward-flowing R123/R134a in a staggered bundle of horizontal low-finned tubes.

Auteurs : HONDA H., TAKAMATSU H., TAKATA N.

Résumé

Experiments were conducted to obtain row-by-row heat and mass transfer data during condensation of downward-flowing zeotropic mixture R123/R134a in a staggered bundle of horizontal low-finned tubes. The vapour temperature and the mass fraction of R134a at the tube bundle inlet were about 50°C and 14% respectively. The refrigerant mass velocity ranged from 9 to 33 kg/m2 second, and the condensation temperature difference from 2 to 10 deg K. Four kinds of low-finned tubes with differences in geometry were tested.

Détails

  • Titre original : Effect of fin geometry on condensation of downward-flowing R123/R134a in a staggered bundle of horizontal low-finned tubes.
  • Identifiant de la fiche : 2000-0121
  • Langues : Anglais
  • Source : Heat transfer in condensation and evaporation: application to industrial and environmental processes. Preprints of the EUROTHERM Seminar 62.
  • Date d'édition : 17/11/1998
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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