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

Eyector supersónico de baja potencia en sistemas solares para aire acondicionado: análisis de los procesos de flujos térmicos en caudal bifásico.

Author(s) : PIETROWICZ S., KASPERSKI J.

Type of article: Periodical article

Summary

This article is the Spanish translation of an article presented at the 22nd IIR international Congress in Beijing, China (see the Bulletin of the IIR, reference 2007-2612). 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: 58-65 (6 p.)

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Details

  • Original title: Eyector supersónico de baja potencia en sistemas solares para aire acondicionado: análisis de los procesos de flujos térmicos en caudal bifásico.
  • Record ID : 2009-0612
  • Languages: Spanish
  • Source: IIF-IIR/Frío Calor Aire acond. - vol. 37 - n. 410
  • Publication date: 2009/01

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