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Etudes expérimentales sur l'écoulement diphasique forcé et l'amélioration du transfert de chaleur en ébullition de fluide cryogénique dans des canaux étroits en forme de croissant.

Experimental studies on forced two-phase flow and boiling heat transfer enhancement of cryogenic fluid in narrow lunate channels.

Auteurs : WU Y. Y., WU T. H., CHEN L. F., et al.

Résumé

Narrow channel heat transfer enhancement has notable advantages of small temperature difference and high heat transfer coefficient. In the paper, a unique kind of configuration, lunate channel, is adopted as the flow channel. The forced gas-liquid two-phase flow and boiling heat transfer of liquid nitrogen in the narrow channels are studied in detail. The experimental results prove that the boiling heat transfer coefficient of this type is as 3-5 times as that of smooth tubes. The effect of mass flow rate, channel gap size and shape of the channel on the heat transfer enhancement are investigated.

Détails

  • Titre original : Experimental studies on forced two-phase flow and boiling heat transfer enhancement of cryogenic fluid in narrow lunate channels.
  • Identifiant de la fiche : 2006-1127
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR 2003.
  • Date d'édition : 22/04/2003

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