Storage of heat for subsequent use - using reversible chemical reaction with greatly reduced ambient losses

摘要

The periodic storage and discharge of heat uses at least one heat transformer contg. a working medium. This undergoes an endothermic reversible reaction to give a solid and a gaseous component. In the storage phase, heat is added to the absorber/releaser and the medium yields the gaseous component, which flows into the condenser/evaporator section. Here it condenses releasing heat. In a heat release mode, the condensate in the condenser/evaporator section is evaporated. This then releases heat in the absorber/release zone by reacting with the solid phase which absorbs it. Solar or electric energy can be used as sources of heat. The energy released by condensation is released to atmosphere or to a latent heat store. The heat released during the release mode is used for water heating or space heating. For use in storing solar energy or electrical energy during the night.