Partager

Document IIF

Recherche expérimentale sur une ailette épaisse refroidie dans des écoulements d'air sec ou humide.

Experimental investigation of a cooled thick fin in dry and air flows.

Auteurs : CONEY J. E. R., SHAFEI E. A. M. el-, SHEPPARD C. G. W.

Type d'article : Article, Article de la RIF

Résumé

The results of a study are reported in which a cooled, thick vertical fin was tested in a closed loop tunnel with and without condensation from the air flowing over it. In particular, the temperature distributions for the dry and wet fin cases, together with the condensate film thickness in the wet fin case, were investigated. From a flow visualization investigation, it was found that the boundary layer separates at the leading edge, resulting in a higher air heat transfer coefficient. The wet fin test results also indicated that the mode of condensation was dependent on fin surface characteristics and that the wet fin performance was governed by the air flow parameter. Within the laminar air flow range, the condensate film flowed downward under the action of gravity. However, at higher air velocities, both gravity and shear forces affected the condensate flow, a variation in the condensate film in the direction of air flow being noticed.

Documents disponibles

Format PDF

Pages : 332-337

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 : Experimental investigation of a cooled thick fin in dry and air flows.
  • Identifiant de la fiche : 30001726
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 12 - n. 6
  • Date d'édition : 11/1989

Liens


Voir d'autres articles du même numéro (6)
Voir la source

Indexation