Pychrometric chart – saturation curve

Saturation curve

Saturation curve on the psychrometric chart

The diagram 1 below indicates, for temperatures from 0°C to +50°C, the maximum amount of water vapor that can be contained by one kg of dry air (saturation curve). That’s also the curve of the 100% relative humidity, also called the curve of dew point temperature.


Diagram 1
Diagram 1 - Saturation curve

Diagram 2 shows, for air at +40°C, the maximum amount (49.14g) of water vapor.

Diagram 2
Diagram 2 - Saturation curve