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Exergetic performance analysis of low GWP alternative refrigerants for R404A in a refrigeration system

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  • Mehmet Altinkaynak

Abstract

According to the regulation of European Union laws in 2014, it was inevitable to switch to low global warming potential (GWP) fluids in the refrigeration systems where the R404A working fluid is currently used. The GWP of R404A is very high, and the potential for ozone depletion is zero. In this study, energetic and exergetic performance assessment of a theoretical refrigeration system was carried out for R404 refrigerant and its alternatives, comparatively. The analyses were made for R448A, R449A, R452A and R404A. The results of the analysis were presented separately in the tables and graphs. According to the results, the cooling system working with R448A exhibited the best performance with a coefficient of performance (COP) value of 2.467 within the alternatives of R404A followed by R449A and R452A, where the COP values were calculated as 2.419 and 2.313, respectively. In addition, the exergy efficiencies of the system were calculated as 20.62%, 20.22% and 19.33% for R448A, R449A and R452A, respectively. For the base calculations made for R404A, the COP of the system was estimated as 2.477, where the exergy efficiency was 20.71%. Under the same operating conditions, the total exergy destruction rates for R404A, R448A, R449A and R452A working fluids were found to be 3.201 kW, 3.217 kW, 3.298 kW and 3.488 kW, respectively. Furthermore, parametric analyses were carried out in order to investigate the effects of different system parameters such as evaporator and condenser temperature.

Suggested Citation

  • Mehmet Altinkaynak, 2021. "Exergetic performance analysis of low GWP alternative refrigerants for R404A in a refrigeration system," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 16(3), pages 842-850.
    • Handle: RePEc:oup:ijlctc:v:16:y:2021:i:3:p:842-850.
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    File URL: http://hdl.handle.net/10.1093/ijlct/ctaa104
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    Cited by:

    1. Atilla G Devecioğlu & Vedat Oruç, 2022. "Drop-in assessment of plug-in R404A refrigeration equipment using low-global warming potential mixtures [Energy consumption and conservation in food retailing]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 17, pages 991-999.

    More about this item

    Keywords

    alternative refrigerant; R448A; R449A; R452A; COP; exergy;
    All these keywords.

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