R134a Refrigerant Saturation Properties
Reference table for R134a refrigerant used in HVAC and thermodynamic calculations
R134a Saturation Table
| Temperature (°C) | Pressure (kPa) | Saturated Liquid Enthalpy, hf (kJ/kg) | Saturated Vapor Enthalpy, hg (kJ/kg) | Latent Heat, hfg (kJ/kg) | Specific Volume, vg (m³/kg) |
|---|---|---|---|---|---|
| -10 | 181 | 48.0 | 232.0 | 184.0 | 0.053 |
| 0 | 294 | 55.0 | 245.0 | 190.0 | 0.050 |
| 10 | 472 | 63.0 | 259.0 | 196.0 | 0.047 |
| 20 | 702 | 71.0 | 274.0 | 203.0 | 0.045 |
| 30 | 1015 | 80.0 | 290.0 | 210.0 | 0.042 |
| 40 | 1425 | 90.0 | 307.0 | 217.0 | 0.040 |
| 50 | 1935 | 101.0 | 325.0 | 224.0 | 0.038 |
| 60 | 2560 | 112.0 | 344.0 | 232.0 | 0.036 |
| 70 | 3315 | 124.0 | 365.0 | 241.0 | 0.034 |
| 80 | 4210 | 137.0 | 388.0 | 251.0 | 0.032 |
About R134a Refrigerant Saturation Properties
R134a (1,1,1,2-Tetrafluoroethane) is a widely used refrigerant in HVAC and refrigeration systems. Understanding its saturation properties—including temperature, pressure, enthalpy, latent heat, and specific volume—is essential for accurate thermodynamic calculations, refrigeration cycle analysis, and heat transfer design.
- Temperature (°C) – Saturation temperature at a given pressure; critical for evaluating system performance and cycle efficiency.
- Pressure (kPa) – Saturation pressure corresponding to the temperature, used for designing compressors, expansion devices, and system controls.
- Saturated Liquid Enthalpy, hf (kJ/kg) – Energy content of R134a in its liquid phase; important for energy balance calculations and refrigeration cycle modeling.
- Saturated Vapor Enthalpy, hg (kJ/kg) – Energy content of R134a in its vapor phase; necessary for heat exchanger and condenser design.
- Latent Heat, hfg (kJ/kg) – Energy required for the phase change from liquid to vapor; key for evaluating refrigerant performance and cooling capacity.
- Specific Volume, vg (m³/kg) – Volume occupied by 1 kg of saturated vapor; used for sizing compressors and expansion valves.
Engineers and HVAC professionals rely on accurate R134a saturation tables to ensure system efficiency, prevent overpressure, optimize energy use, and maintain safe operating conditions. Using these reference values helps in designing reliable refrigeration and air conditioning systems, as well as in troubleshooting and performance analysis.