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Document IIF

Effet de la géométrie des canaux sur le transfert de chaleur par ébullition et la chute de pression du R32 à l'intérieur de tubes horizontaux à ports multiples.

Effect of channel geometry on boiling heat transfer and pressure drop of R32 inside horizontal multiport tubes.

Numéro : pap. n. 703

Auteurs : JIGE D., TERASHIMA Y., INOUE N., et al.

Résumé

This study was conducted to investigate the flow boiling heat transfer and pressure drop characteristics of R32 in horizontal multiport tubes with circular and triangular mini-channels. The heat transfer and pressure drop characteristics of the boiling flow were measured over a range of mass velocities from 50 to 400 kg/(m2s), a range of heat fluxes from 5 to 20 kW/m2, and at a saturation temperature of 15°C. The pressure drop characteristics were also measured for adiabatic two-phase flow. The effects of the channel geometry on the pressure drop and boiling heat transfer characteristics were clarified. The measured frictional pressure drop was compared to that predicted by existing correlations.

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Pages : 8 p.

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Détails

  • Titre original : Effect of channel geometry on boiling heat transfer and pressure drop of R32 inside horizontal multiport tubes.
  • Identifiant de la fiche : 30015547
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0703

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