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Étude de simulation de la séparation de phase et de la distribution de la pression de frigorigène dans les jonctions horizontales en T doubles.

Simulation study on phase separation and pressure distribution of refrigerant in horizontal double T-junctions.

Auteurs : BAI M., ZHAO R., LU P., YANG B., ZHAO L., ZHANG Y.

Type d'article : Article de la RIF

Résumé

T-junction is widely used as a phase separation component to separate two-phase flow because of its simple structure and low cost. Previous studies suggest that an increase in the number of T-junction branches is conducive to raise phase separation efficiency. In this paper, the pressure distribution and phase separation performance of two-phase flow of R134a in horizontal double T-junctions are studied. The phase separation performance between two branches is compared. The parameters including inlet quality (0.3-0.6), inlet mass flow rate (10.0 g s−1-25.0 g s−1), diameter ratio (1, 0.75) and the distance between two branches (0.3 m-2.6 m) are studied. The inlet mass flow rate has significant influence on the phase separation, and the separation performance reaches best when it is 10.0 g s−1. Results show that the change of parameters has greater influence on the phase separation performance of the second branch compared with the first branch. When the distance between branches is 2.0 m, the total phase separation capacity of the branches reaches the best. By comparing the phase separation of branches, it can be found that when the distance increases gradually, the phase separation performance of the second branch first increases and then decreases, indicating that there is a specific distance that maximizes the gas phase separation efficiency of branches. The optimal distance is also related to the mass flow ratio of the second branch. Therefore, an empirical correlation equation which can accurately predict the gas phase separation efficiency of the second branch is proposed.

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Format PDF

Pages : 88-98

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    20 €

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Détails

  • Titre original : Simulation study on phase separation and pressure distribution of refrigerant in horizontal double T-junctions.
  • Identifiant de la fiche : 30028289
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 126
  • Date d'édition : 06/2021
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.01.021

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