Air - Humidifying by Adding Steam or Water

Calculate the mass of water or steam required to humidify air by adding water or steam. This tool covers humidification processes using both liquid water (adiabatic process) and saturated steam at atmospheric pressure.

Calculator

Inputs

Air Flow Volume (m³/h)

Air Temperature (°C)

Air Density (kg/m³)

Initial Humidity Ratio (xA) (kg_h2o/kg_dry_air)

Final Humidity Ratio (xC) (kg_h2o/kg_dry_air)

Results

Mass of Water Added-- kg/s

Mass of Water Added-- kg/h

Calculator

Inputs

Air Flow Volume (m³/h)

Air Density (kg/m³)

Initial Humidity Ratio (xA) (kg_h2o/kg_dry_air)

Final Humidity Ratio (xB) (kg_h2o/kg_dry_air)

Initial Enthalpy (hA) (kJ/kg)

Final Enthalpy (hB) (kJ/kg)

Results

Mass of Steam Added-- kg/s

Mass of Steam Added-- kg/h

Enthalpy Difference (ΔH)-- kJ/kg

Total Heat Added by Steam-- kW

Method	Initial Humidity Ratio (kg/kg)	Final Humidity Ratio (kg/kg)	Mass Added (kg/s)	Mass Added (kg/h)	Process Type
Adding Water	0.002	0.0062	0.0041	14.9	Adiabatic (constant enthalpy)
Adding Steam	0.002	0.012	0.01	35.5	Constant dh/dx line (~2502 kJ/kg)