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Document IIF

Effet de l'huile sur la chute de pression diphasique du frigorigène lors de l'ébullition en écoulement à l'intérieur de tubes circulaires remplis de mousse métallique.

Effect of oil on two-phase pressure drop of refrigerant flow boiling inside circular tubes filled with metal foam.

Auteurs : HU H., ZHU Y., DING G., et al.

Type d'article : Article, Article de la RIF

Résumé

Two-phase pressure drop characteristics of refrigerant-oil mixture in circular tubes filled with metal foam were experimentally investigated. Experimental conditions cover nominal oil concentrations from 0 to 5%, metal foam structures of 5 PPI and 10 PPI, vapor qualities from 0.2 to 0.8, and mass fluxes from 30 to 90 kg/m2s. The test results show that the pressure drop increases with the increase of oil concentration, mass flux or vapor quality. The presence of oil increases pressure drop by a maximum of 25% and 50% for 5 and 10 PPI metal foams, respectively. The enhancement effect of oil for high PPI metal foam is more evident than that for low PPI metal foam. A correlation for predicting the two-phase pressure drop of refrigerant-oil mixture in circular metal-foam tubes was developed, and it agrees with 90% of the experimental data within a deviation of ±20%.

Documents disponibles

Format PDF

Pages : 516-526

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Effect of oil on two-phase pressure drop of refrigerant flow boiling inside circular tubes filled with metal foam.
  • Identifiant de la fiche : 30007164
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 2
  • Date d'édition : 03/2013

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