Refrigerant Gases

Mihama Refrigerant Gases HFC R-134a

HFC R-134a

R134a refrigerant is widely accepted as the most appropriate alternative for R-12 over the majority of the application range for both retrofit and new equipment. A very good match to R-12 for air conditioning, high and medium temperature usage. It can be used in hybrid cascade systems for supermarkets and is being used in some of the HFO blends in order to bring lower flammability and better efficiency.

Property S.I. Units Value British Units Value
Molecular Weight kg/kmol 102.03 lbm/lbmol 102.03
Critical Temperature °C 101.06 °F 213.91
Critical Pressure bara 40.59 psia 588.75
Critical Density kg/m3 511.9 lb/ft3 31.96
Normal Boiling Point °C -26.074 °F -14.933
Latent Heat of Vapourisation at Atmospheric Pressure kJ/kg 216.97 BTUIT/lb 93.28
Saturated Vapour Density at Atmospheric Pressure kg/m3 5.2581 lb/ft3 0.33
Liquid Vapour Pressure @25°C bara 6.6538 psia 96.51
Coefficient of Volumetric Thermal Expansion for Saturated Liquid at 25°C °C-1 0.0032364 °F-1 0.0018
Speed of Sound* for Saturated Vapour at 25°C m/s 144.26 ft/s 473.29
Adiabatic Exponent* for Saturated Vapour at 25°C 1.23 1.23
Latent Heat of Vapourisation at 25°C kJ/kg 177.78 BTUIT/lb 76.43
Saturated Vapour Density at 25°C* kg/m3 32.35 lb/ft3 2.02
Saturated Vapour Density at 0°C* kg/m3 14.428 lb/ft3 0.901
* Vapour composition as per bulk refrigerant at dew point