Ships At Winter

Exothermicity
Freezing is an exothermic process, meaning that as liquid changes into solid, heat is released. This is ten seen as counter-intuitive, since the temperature the material does not rise during freezing, except if the liquid was supercooled, but this can be understood since heat must be continually removed from the freezing liquid or the freezing process will stop. The energy released upon freezing is a latent heat, and is known as the enthalpy fusion and is exactly the same as the energy required to melt the same amount the solid.