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Ternary refrigerant blends for ultra-low temperature refrigeration.

Author(s) : MOTA BABILONI A., FERNANDEZ MORENO A., GIMÉNEZ-PRADES P., UDROIU C-M., NAVARRO-ESBRÍ J.

Type of article: IJR article

Summary

The absence of GWP limitation for refrigerants operating in vapour compression systems with a target temperature below –50 °C has caused slower market development. Therefore, while typical refrigeration applications have several mixtures offering different characteristics, a few mixtures already exist for –80 °C refrigeration (R-469A, R-472A, and R-473A). This paper explores the combination of pure fluids with varied characteristics as three-component mixtures for ultra-low temperature refrigeration. Different parameters have been considered in the theoretical screening, such as volumetric cooling capacity, coefficient of performance, global warming potential, and flammability at constant operating conditions. R-32, R-41, R-125, R-134a, R-152a, R-170, R-227ea, R-290, R-744, R-1132a, R-1150, R-1234ze(E) and RE-170 have been combined at steps of 5%. Mixtures with the lowest global warming potential and highest coefficient of performance result in high flammability, particularly at −80 °C. Environmental and energy aspects would require a lower priority in trade-off selections to reduce the flammability classification.

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Pages: 108-116

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Details

  • Original title: Ternary refrigerant blends for ultra-low temperature refrigeration.
  • Record ID : 30031149
  • Languages: English
  • Subject: HFCs alternatives
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 148
  • Publication date: 2023/04
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2023.01.006

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