| Titre : | Effect of oil on two-phase pressure drop of refrigerant flow boiling inside circular tubes filled with metal foam (2013) |
| Titre original : | 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 |
| Auteurs : | Haitao Hu, Auteur ; Yu Zhu, Auteur ; Shuo Sun, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 36 N° 2 (N° spécial), Mars 2013) |
| Article en page(s) : | pp. 516–526 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | Correlation ; Flow boiling ; Metal foam ; Oil ; Pressure drop |
| 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 PPI 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%. |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700712002976 |
