LATENT HEAT OF VAPORISATION AND FUSION DEFINATION. A heat is the energy absorbed or released during a phase change (like melting or boiling) at a constant temperature, with latent heat of Redefining fuel heating value for engines: Accounting for heat of vaporization ScienceDirect Heats of Vaporization and Condensation Examples, Calculations and Definitions CK 12 Foundation Latent Heat Formula Formulas, Derivation, Applications, Example Problems