Latent Heat of Vaporisation
Enthalpy of vaporisation h_fg at a given pressure - the heat required to turn 1 kg of saturated water into 1 kg of saturated steam.
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Formula, assumptions, and limits
| Symbol | Meaning | Unit |
|---|---|---|
| Saturated liquid enthalpy | kJ/kg | |
| Saturated vapour enthalpy | kJ/kg | |
| Latent heat of vaporisation | kJ/kg |
Source: IAPWS IF97; ASME Steam Tables
In short
Enthalpy of vaporisation h_fg at a given pressure - the heat required to turn 1 kg of saturated water into 1 kg of saturated steam.