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The Performance Analysis of an Integrated CO 2 Refrigeration System with Multi-Ejectors Installed in a Supermarket

Author

Listed:
  • Engin Söylemez

    (Process and Power Research Group Trondheim, Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway)

  • Armin Hafner

    (Process and Power Research Group Trondheim, Department of Energy and Process Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway)

  • Christian Schlemminger

    (Sintef Energy Research, Department of Thermal Energy, 7465 Trondheim, Norway)

  • Ekaterini E. Kriezi

    (RAC R&D Danfoss A/S -Nordborgvej 81, 6430 Nordborg, Denmark)

  • Vahid Khorshidi

    (RAC R&D Danfoss A/S -Nordborgvej 81, 6430 Nordborg, Denmark)

Abstract

The field data from an integrated CO 2 refrigeration system installed in a supermarket located north of the capital of Lisbon was analyzed. The goal was to demonstrate the effect and performance of multi-ejectors on a refrigeration system operating in a warm climate. The measurement results for the system with and without activating ejectors were compared. It was observed that the system with a multi-ejector operation had considerable performance superiority. The ejectors improved the cooling capacity of the medium temperature stage of the system by 17.4%. The system with active ejectors had 7.5% less total power consumption compared to the ejector off mode of the same system.

Suggested Citation

  • Engin Söylemez & Armin Hafner & Christian Schlemminger & Ekaterini E. Kriezi & Vahid Khorshidi, 2022. "The Performance Analysis of an Integrated CO 2 Refrigeration System with Multi-Ejectors Installed in a Supermarket," Energies, MDPI, vol. 15(9), pages 1-16, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3142-:d:801930
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