METHODS OF STORAGE AND RELEASE OF THERMAL ENERGY, REACTOR THEREFOR, AND APPLICATION TO INTERSESTONAL STORAGE OF SOLAR HEAT

摘要

The invention relates to a method for storing or releasing thermal energy by chemical reaction, in which a stream of heat-transfer gas is circulated through a layer (10) of a first hygroscopic salt A and then through a layer (20). ) of a second hygroscopic salt B, the gas being reactive with salts A and B, the thermodynamic equilibrium curve of salt A being situated to the left of the second salt B in a pressure-temperature phase diagram; circulation of the flow of gas causing a dehydration or hydration reaction of both the first salt A and the second salt B.