heat of evaporation


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

heat of e·vap·o·ra·tion

the heat absorbed in the evaporation of water, sweat or other liquid; for water it amounts to 540 cal/g at 100°C.

heat of e·vap·o·ra·tion

(hēt ē-vap'ŏr-ā'shŭn)
Heat absorbed in the evaporation of water, sweat, or other liquid; for water it amounts to 540 cal/g at 100°C.
Synonym(s): heat of vaporization.

heat of evaporation

The heat absorbed per unit of mass when a substance is converted from a liquid to a gas, such as the change of water to steam when it is heated sufficiently. For water, the amount of heat required to transform water into steam is 540 cal/g of water.
See also: heat
References in periodicals archive ?
The latent heat of evaporation is 975 Btu/lb of water evaporated per minute.
It utilises the principle of evaporative cooling--a constant energy, totally natural phenomena in which heat is extracted from air as a result of the latent heat of evaporation.