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Performance evaluation of a transcritical CO2 refrigeration system for supermarkets in hot climatic conditions.

Number: 1221

Author(s) : RAI S., KUMAR A., MODI A.

Summary

Subcooling of the refrigerant before expanding it to the evaporator pressure in a transcritical carbon dioxide (CO2) refrigeration system considerably improves the system's performance. This numerical study uses the refrigerating effect generated in a heat-driven ejector refrigeration system to subcool the CO2 refrigerant. The heat of the CO2 refrigerant at the compressor exit is used to drive the heat-driven ejector refrigeration system. Further, in another configuration, an internal heat exchanger (IHX) is utilised to subcool the refrigerant. The performance analysis of the heat-driven ejector cooling assisted transcritical CO2 refrigeration system with and without the IHX has been performed. The parametric study has been carried out for various variables, while the low temperature evaporator and the medium temperature evaporator are maintained at -30 °C and -10 °C, respectively. The maximum improvement in the Coefficient of performance (COP) for the proposed system has been observed about 14.2 % and 50.4 % as compared to parallel compression refrigeration system and booster refrigeration system, respectively.

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Pages: 11 p.

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Details

  • Original title: Performance evaluation of a transcritical CO2 refrigeration system for supermarkets in hot climatic conditions.
  • Record ID : 30032728
  • Languages: English
  • Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
  • Publication date: 2024/08
  • DOI: http://dx.doi.org/10.18462/iir.gl2024.1221

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