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Document IIF

Les processus d'écoulement thermique pendant l'écoulement diphasique dans les systèmes de conditionnement d'air solaires de faible puissance munis d'éjecteurs supersoniques.

The thermo-flow processes proceeding during two-phase flow in a supersonic ejector applied in low power solar air-conditioning systems.

Auteurs : PIETROWICZ S., KASPERSKI J.

Résumé

In the paper, the selected designing problems which can result from using the supersonic two-phase flow steam (R-718) ejector in low power refrigerating systems where the high heat source is solar energy have been presented. The numerical calculations were carried out using finite element method in ANSYS CFX software and the mesh was generated using ANSYS ICEM. In order to validate the numerical results, a special set-up was designed and constructed. A series of experiments was carried out at the entrainment ratio range from 0 to 0.3. During the experiments temperature and pressure of primary motive, secondary induced and outlet stream were measured. The experimental results were compared with the numerical calculations. For boundary conditions and SST model of turbulence applied for calculations, the numerical results showed a good agreement with the data obtained during experiments.

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Pages : ICR07-E1-1073

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Détails

  • Titre original : The thermo-flow processes proceeding during two-phase flow in a supersonic ejector applied in low power solar air-conditioning systems.
  • Identifiant de la fiche : 2007-2612
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

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