Refrigerant R455a

  • REFRIGERANT R455A

    Environmental-friendly, ultralow-GWP refrigerant

    Refrigerants

F-GAS READY SOLUTION FOR NEW HVAC EQUIPMENT

The refrigerant is a blend of 75.5% R1234yf, 21.5% R32, and 3% CO2, with a GWP of as low as 146. Plus, it matches the capacity of R404a and has 5-6% better efficiency than the latter, and offers an extended operating envelope when compared to traditional airconditioning refrigerants and propane.

Its thermodynamic performance allows it to be an option for R22 and R404a in low- and medium-temperature refrigeration, in applications like plugin-type cabinets, condensing units, foodservice, water-loop systems. R455a is high critical temperature and low critical pressure, which makes it a potential match for applications such as supermarkets, chillers, heat pumps, low-temperature side of cascade systems, and transport refrigeration.

Refrigerant R455a
  • Ultralow GWP of 145
  • Close capacity match to R404a
  • Extended operating envelope compared to airconditioning refrigerants
  • High critical temperature
  • Low critical pressure
  • Low discharge temperature
  • 30% lower mass flow compared to R404a

R455A PROPERTIES

ASHRAE number

R455a

Composition

R1234yf/R32/R744

Boiling point @ 1atm [°C]

52.1

Critical temperature [°C]

85.6

Ozone depletion potential

0

GWP AR5

145

ASHRAE safety class

A2L

Temperature glide [K]

12.8

Molecular weight [g/mol]

87.5

Liquid density @ 25.0°C [kg/m³]

1033.4

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