The vaporization is one of the six fundamental transformations of physics. It consists in passing from the state Liquide to the state Gaz them; it can take the form of a evaporation or a boiling.

Vaporization asks for in general a considerable quantity of energy, which makes it possible to be used as intermediary between the device producing heat (the boiler) and the device using heat.

Vaporization is used in many mechanisms of energy transformation, as an intermediary, of storage of energy. For example in a thermo plant of electrical production (central traditional or nuclear), the energy released by the Combustion or nuclear Fission is used to vaporize water, the steam actuating a turbine (in the case of a nuclear plant, there are two intermediate loops using of water, or possibly Sodium). The same phenomenon is with work in the engine with vapor where the energy of coal is used after water vaporization, released vapor being used to actuate the pistons of the engine.