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R450a and R513a as low-GWP substitutes of R-134a and R-507a in a medium temperature refrigeration system.

Number: pap. 1102

Author(s) : LLOPIS R., NEBOT-ANDRÉS L., CATALÁN-GIL J., et al.

Summary

This work presents the experimental evaluation of R-513A (GWP=573) and R-450A (GWP=547) as drop-in replacements of R-134a (GWP=1301) and R-507A (GWP=3987) in a commercial cabinet using a direct expansion system for medium temperature applications. The evaluation covers 24-hour energy tests using a single-stage refrigeration cycle with semihermetic compressor, electronic expansion valve and a commercial vertical cabinet with doors placed inside a climatic chamber. Tests were done at three water dissipation temperatures (23.3, 32.8 and 43.6ºC) using a constant volumetric flow rate of 1 m3·h-1. The work focuses on temperature and pressure indicators in the refrigeration system, as well as, in the energy performance using the drop-in mixture against the high-GWP refrigerants.

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Pages: 8

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Details

  • Original title: R450a and R513a as low-GWP substitutes of R-134a and R-507a in a medium temperature refrigeration system.
  • Record ID : 30024082
  • Languages: English
  • Source: CYTEF 2018. IX Congreso Ibérico y VII Congreso Iberoamericano de Ciencias y Técnicas del Frío, Valencia, España, 19-21 junio 2018.
  • Publication date: 2018/06/19

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