Partager

Caractéristiques d'assèchement pendant l'ébullition en écoulement du R134a dans des minicanaux circulaires verticaux.

Dryout characteristics during flow boiling of R134a in vertical circular minichannels.

Auteurs : ALI R., PALM B.

Type d'article : Article

Résumé

In this paper, the experimental results of dryout during flow boiling in minichannels are reported and analysed. Experiments were carried out in vertical circular minichannels with internal diameters of 1.22 and 1.70 mm and a fixed heated length of 220 mm. R134a was used as working fluid. Mass flux was varied from 50 kg/m2 s to 600 kg/m2.s and experiments were performed at two different system pressures corresponding to saturation temperatures of 27 and 32°C. Experimental results show that the dryout heat flux increases with mass flux and decreases with tube diameter while system pressure has no clear effect for the range of experimental conditions covered. Finally, the prediction capabilities of the well known critical heat flux correlations are also tested. [Reprinted with permission from Elsevier. Copyright, 2011.]

Détails

  • Titre original : Dryout characteristics during flow boiling of R134a in vertical circular minichannels.
  • Identifiant de la fiche : 30001819
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 54 - n. 11-12
  • Date d'édition : 05/2011
  • DOI : http://dx.doi.org/10.1016/j.ijheatmasstransfer.2011.02.018

Liens


Voir d'autres articles du même numéro (8)
Voir la source

Indexation