Partager

Document IIF

Effet d'inserts en forme d'anneaux coniques sur le transfert de chaleur dans un tube.

Effect of conical-ring inserts on heat transfer in a tube.

Auteurs : KONGKAITPAIBOON V., EIAMSA-ARD S., THIANPONGE C.

Résumé

Effects of the conical-ring insertion on heat transfer and flow friction characteristics in a uniform heat flux tube have been studied experimentally. In the experiments, the turbulent flow was introduced by using conical-ring placed inside the inner test tube of the heat exchanger with different diameter ratios, DR= d/D= 0.5, 0.6 and 0.7. The experimental results revealed that the increase in heat transfer rate of the conical-ring inserts is found to be strongly influenced by vortex motion. Over the range investigated, the mean Nusselt numbers for using the enhancement devices with DR= 0.5, 0.6, and 0.7, are 297, 238 and 191%, respectively, higher than that for the plain tube. In addition, the influences of the conical-ring on the flow friction and enhancement efficiency are also investigated.

Documents disponibles

Format PDF

Pages : ICR07-B1-655

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Effect of conical-ring inserts on heat transfer in a tube.
  • Identifiant de la fiche : 2007-2531
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

Liens


Voir d'autres communications du même compte rendu (839)
Voir le compte rendu de la conférence

Indexation