| Titre : | Experimental investigation of two-phase flow characteristics of LiBr/H2O solution through orifice plates in vacuum environment (2014) |
| Titre original : | Etude expérimentale des caractéristiques diphasiques d'une solution de LiBr/H2O à travers des distributeurs d'air dans un environnement sous vide |
| Auteurs : | Sheng Wang, Auteur ; Xiaoyun Xie, Auteur ; Yi, Jiang, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 38, Février 2014) |
| Article en page(s) : | pp. 267–274 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | Two-phase flow ; LiBr/H2O solution ; Choked Orifice plate ; Vacuum |
| Résumé : | A new type of multi-stage elementary unit for generating and condensing processes in absorption heat pumps was introduced. One stage of the elementary unit was built, in which the LiBr/H2O solution was concentrated by flash evaporation when flowing through an orifice plate to the generating space. Experiments were carried out to study the flow characteristics of LiBr/H2O solution through an orifice plate in generating processes. The experimental results showed that the reduction of the mass flow rate of the two-phase flow reached a maximum of 24.5%. The mass fraction of gas of the two-phase flow was proportional to its superheat. When the mass transfer pressure difference was higher than 7 kPa or the mass fraction of gas was larger than 0.70%, the flow was choked, and the flow coefficient was reduced as the mass fraction of gas increased, reaching a minimum value of 0.64. A regression model for the flow coefficient of the two-phase LiBr/H2O solution was obtained. |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700713002417 |
