Latent heat

The energy required to change the state of a substance at a constant temperature (Thakore and Bhatt 2007). In atmospheric science, the three most common values are:

Latent heat of vaporisation (condensation) is equal to 12,257 at 100 °C (2,501 at 0 °C) and is the mount of energy absorbed (released) by water during evaporation (condensation) (Allaby 2002).

Latent heat of melting (fusion) is equal to 334  at 0 °C and is the amount of energy absorbed (released) by water during melting (freezing) (Allaby 2002).

Latent heat of sublimation is equal to 2,835  at 0 °C and is the amount of energy absorbed (released) by ice (water vapour) during sublimation (Allaby 2002).

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