Partager

Document IIF

Effet du pompage capillaire dans les évaporateurs frigorifiques à microcanaux.

Effect of capillary pumping in application to refrigeration microchannel evaporators.

Numéro : pap. n. 42

Auteurs : KARWACKI J., BUTRYMOWICZ D., LACKOWSKI M.

Résumé

Application of heat exchangers of very small cross sections, i.e. mini- or microchannels, in heat transfer processes became one of the key challenges of current refrigeration and heat pump technologies. This paper deals with analysis of the effect of capillary pumping in microchannel. The effect of capillary pumping is caused by presence of concave liquid meniscus in microchannel. Two cases are analysed: evaporation of the working fluid at the meniscus only and the second case when bubble boiling occurs at the channel walls along with evaporation from the meniscus. This meniscus creates lower pressure in the liquid phase in comparison with vapour phase. This phenomenon can substantially reduce the resistance of the flow. Exemplary results of the theoretical analysis of the effect of capillary pumping are presented and discussed in the paper.

Documents disponibles

Format PDF

Pages : 8 p.

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 capillary pumping in application to refrigeration microchannel evaporators.
  • Identifiant de la fiche : 30008922
  • Langues : Anglais
  • Source : Compressors 2013: 8th International Conference on Compressors and Coolants.
  • Date d'édition : 02/09/2013

Liens


Voir d'autres communications du même compte rendu (60)
Voir le compte rendu de la conférence

Indexation