Latent heat
hfg = hg - hf
Cooling effect uses enthalpy difference
Refrigerant property lookup
R134A Refrigerant Properties
Look up R134A saturation pressure, enthalpy, latent heat, and vapor specific volume by temperature for quick HVAC and refrigeration cycle checks.
Instant saturation lookup
Select saturation temperature
Results update automatically using interpolated table values for R134A saturation properties.
Interpolated result
Reference table
R134A saturation table
| Temperature (°C) | Pressure (kPa) | hf (kJ/kg) | hg (kJ/kg) | hfg (kJ/kg) | vg (m3/kg) |
|---|---|---|---|---|---|
| -10 | 181 | 48 | 232 | 184 | 0.053 |
| 0 | 294 | 55 | 245 | 190 | 0.05 |
| 10 | 472 | 63 | 259 | 196 | 0.047 |
| 20 | 702 | 71 | 274 | 203 | 0.045 |
| 30 | 1015 | 80 | 290 | 210 | 0.042 |
| 40 | 1425 | 90 | 307 | 217 | 0.04 |
| 50 | 1935 | 101 | 325 | 224 | 0.038 |
| 60 | 2560 | 112 | 344 | 232 | 0.036 |
| 70 | 3315 | 124 | 365 | 241 | 0.034 |
| 80 | 4210 | 137 | 388 | 251 | 0.032 |
Formulas
Refrigerant property relationships
Saturation state
Tsat corresponds to Psat
At saturation, liquid and vapor can coexist
R134A saturation properties are used for quick cycle checks, evaporator and condenser estimates, pressure-temperature checks, and troubleshooting. Always verify final design values against manufacturer data and applicable refrigerant standards.
Reference
What the R134A values mean
Saturation pressure
The pressure at which R134A boils or condenses at the selected saturation temperature.
Liquid enthalpy
hf is the energy content of saturated liquid refrigerant at the saturation point.
Vapor enthalpy
hg is the energy content of saturated vapor refrigerant at the saturation point.
Specific volume
vg helps estimate vapor volume flow and compressor displacement requirements.
FAQ
R134A refrigerant questions
What is R134A refrigerant?
R134A, also known as 1,1,1,2-tetrafluoroethane, is an HFC refrigerant used in automotive air conditioning, chillers, and refrigeration systems.
What does saturation pressure mean for R134A?
Saturation pressure is the pressure at which liquid and vapor R134A coexist at a given saturation temperature.
Can this table replace manufacturer refrigerant data?
No. Use this page for quick reference and early calculations. Final HVAC work should use manufacturer data, standards, and calibrated gauges.
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