R32 Refrigerant Saturation Properties
Reference table for R32 refrigerant used in HVAC and thermodynamic calculations
R32 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 | 250 | 48.0 | 210.0 | 162.0 | 0.045 |
| 0 | 400 | 56.0 | 225.0 | 169.0 | 0.042 |
| 10 | 650 | 64.0 | 241.0 | 177.0 | 0.039 |
| 20 | 950 | 73.0 | 258.0 | 185.0 | 0.036 |
| 30 | 1350 | 82.0 | 276.0 | 194.0 | 0.034 |
| 40 | 1850 | 93.0 | 295.0 | 202.0 | 0.032 |
| 50 | 2500 | 105.0 | 315.0 | 210.0 | 0.030 |
| 60 | 3200 | 118.0 | 336.0 | 218.0 | 0.028 |
| 70 | 4100 | 132.0 | 359.0 | 227.0 | 0.026 |
| 80 | 5100 | 148.0 | 384.0 | 236.0 | 0.024 |
R32 Refrigerant Saturation Properties Explained
R32 (difluoromethane) is a modern refrigerant widely used in HVAC systems and heat pumps. Understanding its saturation properties—including temperature, pressure, enthalpy, latent heat, and specific volume—is crucial for accurate thermodynamic calculations, refrigeration cycle analysis, heat transfer design, and HVAC system optimization.
- Temperature (°C) – Saturation temperature of R32 at a given pressure; critical for cycle efficiency, system performance evaluation, and cooling capacity calculations.
- Pressure (kPa) – Saturation pressure corresponding to the temperature; essential for proper sizing of compressors, expansion devices, and system components.
- Saturated Liquid Enthalpy, hf (kJ/kg) – Energy content of R32 in the liquid phase; important for energy balance and refrigeration cycle modeling.
- Saturated Vapor Enthalpy, hg (kJ/kg) – Energy content of R32 in the vapor phase; used for condenser, evaporator, and heat exchanger performance analysis.
- Latent Heat, hfg (kJ/kg) – Energy required for phase change from liquid to vapor; key for evaluating cooling capacity, heat transfer rates, and system efficiency.
- Specific Volume, vg (m³/kg) – Volume occupied by 1 kg of saturated vapor; important for compressor and expansion device design, and volumetric flow calculations.
Accurate knowledge of R32 saturation properties allows engineers and HVAC professionals to design efficient systems, optimize energy consumption, prevent overpressure, and maintain safe operation. These reference values are indispensable for thermodynamic calculations, system design, performance analysis, and troubleshooting in refrigeration and air conditioning applications.