Superheat is defined as the temperature increase that a refrigerant experiences before entering the compressor when it is entirely in a gaseous phase. For single-gas refrigerants with no glide, superheat represents the temperature rise of the gas within the evaporator.
Superheat Calculation:
Superheat is calculated by subtracting the saturation temperature of the refrigerant from the measured temperature at the compressor inlet.
Example:
- Compressor inlet temperature: 10 °C
- Saturation temperature: 4 °C
- Superheat: 10−4=6 °C10 – 4 = 6 \,°C10−4=6°C
