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Experimental investigation of two-phase ejector in application to propane refrigeration systems.

Number: 0645

Author(s) : GAGAN J., PAWLUCZUK A., LUKASZUK M., JAKONCZUK P., SMIERCIEW K., BUTRYMOWICZ D., KUBICZEK S.

Summary

Ejectors are mainly applied in refrigeration systems instead mechanical compressor, for increase the pressure from evaporation to condensation level. Recently, systems with ejector as a booster compressor were introduced, especially for CO2 refrigeration systems. The application of ejector as a booster compressor allow for a significant extension of the range of available operating parameters of the heat pump, especially in the high-temperature region. The paper presents and discusses the experimental studied performed for the case of propane as a working fluid. The investigations of the four ejector geometries were carried out on a specially designed test stand. The tests were carried out for four different motive nozzle positions in relation to mixing chamber inlet (0.0 mm; 0.5 mm; 1.0 mm and 1.5 mm). Different discharge pressure were provided in the test. The working fluid used in the experiments was propane. The pressure and temperature distributions along the ejector will be shown. Based on the experimental investigation the velocity coefficients of motive nozzle and mixing chamber were determined.

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Pages: 8

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Details

  • Original title: Experimental investigation of two-phase ejector in application to propane refrigeration systems.
  • Record ID : 30033309
  • Languages: English
  • Source: 11th IIR Conference on Compressors and Refrigerants.
  • Publication date: 2024/09
  • DOI: http://dx.doi.org/10.18462/iir.compr.2024.0645

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