Document IIF

Effet des micro-rainures sur la chute de pression diphasique du CO2 à l'intérieur d'un mini-canal.

Effect of micro-grooves on the two-phase pressure drop of CO2 in a mini-channel tube.

Auteurs : KIM D. H., JEONG S.

Type d'article : Article, Article de la RIF

Résumé

The pressure drop characteristics of CO2 have been experimentally investigated for a mini-channel tube with and without micro rectangular grooves. The multiple mini-channels have an inner diameter of 0.8 mm and the grooves have a rectangular cross section (0.1 × 0.2 mm). The pressure drop was measured for a saturated liquid phase and two-phase. Using the hydraulic diameter, the pressure drop in the grooved mini-channel can be successfully estimated with the correlations used for smooth channels. Because of a smaller hydraulic diameter, the pressure drop of the grooved channel was found to be about 1.3 times and 1.1–1.45 times greater than that of the smooth channel, for liquid and two-phase, respectively. The experimental results were compared with widely used two-phase pressure drop models. Most of the models showed the mean absolute error of 17–35% for the smooth channel and 13–32% for the grooved channel.

Documents disponibles

Format PDF

Pages : 2040-2047

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 micro-grooves on the two-phase pressure drop of CO2 in a mini-channel tube.
  • Identifiant de la fiche : 30009813
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 8
  • Date d'édition : 12/2013

Liens


Voir d'autres articles du même numéro (37)
Voir la source