Psychrometrics

Dew point and water evaporation

Calculate the temperature at which water vapour starts to condense and the wet-bulb temperature, which is the practical limit of air cooling by water evaporation.

Inputs: dry-bulb air temperature, relative humidity and absolute air pressure.

Dew point / condensation temperature
Wet-bulb / evaporation temperature
Evaporative cooling potential
Margin to condensation
Water vapour partial pressure
Humidity ratio
Saturation humidity ratio
Interpretation

Full analysis

Verify conditions for a real installation

A full analysis can include air flow, evaporated water mass, heat gains, air exchange, adiabatic cooling and condensation risk on surfaces.

Results are psychrometric calculations for moist air. Wet-bulb temperature is a thermodynamic estimate and does not replace measurement in a specific system.