| Titre : | Heat transfer measurements and correlation of refrigerant flow boiling in tube filled with copper foam (2014) |
| Titre original : | Mesures du transfert de chaleur et corrélation entre les mesures et l'ébullition en écoulement du frigorigène à l'intérieur d'un tube rempli de mousse de cuivre |
| Auteurs : | Yu Zhu, Auteur ; Haitao Hu, Auteur ; Shuo Sun, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 38, Février 2014) |
| Article en page(s) : | pp. 215–226 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | Metal foam ; Flow ; Boiling ; Flow pattern ; Heat transfer ; Correlation |
| Résumé : | Flow boiling heat transfer characteristics of refrigerant in tubes filled with metal foams were experimentally investigated at a saturation temperature of 7 °C, mass flux from 10 to 90 kg m−2 s−1, vapor quality from 0.1 to 0.8 and heat flux from 3.1 to 18.3 kW m−2. The refrigerant is R410A. The test sections are tubes with inner diameter of 23.4 or 13.8 mm, filled with 5 or 10 PPI copper foam. The experimental results reveal that, metal foam enhances the flow boiling heat transfer by a maximum of 220% and promotes the flow pattern transition from stratified flow to stratified-wavy flow and from stratified-wavy flow to annular flow. The heat transfer coefficient decreases with vapor quality under low mass flux, while it increases with vapor quality under high mass flux. A correlation for predicting the flow boiling heat transfer was developed and it agrees well with the experimental data. |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700713001011 |
