1. Charge:

When heat is put into the accumulator, the water is separated from the salt. It moves to the other compartment where it is condensed.

2. Storage:

When the two compartments are closed the process is stopped. At a later time the stored energy can be used to produce either cold or heat.

3. Discharge:

When the compartments are connected and the salt temperature is kept below the equilibrium temperature, the process is reversed. Water vaporises and is absorbed by the salt again. The vaporisation of the water creates the cooling effect.