Energy storage plant and process
AssigneeEnergy Dome S.P.A.
InventorClaudio Spadacini
Life of this patent
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Abstract
An energy storage plant includes a casing for the storage of a working fluid different from atmospheric air, in gaseous phase and in pressure equilibrium with the atmosphere; and a tank for the storage of said working fluid in liquid or super-critical phase with a temperature close to the critical temperature. The critical temperature is close to the ambient temperature. The plant is configured to perform a closed cyclic thermodynamic transformation, first in one direction in a charge configuration and then in an opposite direction in a discharge configuration, between said casing and said tank. In the charge configuration the plant stores heat and pressure and in the discharge configuration generates mechanical energy to drive a driven machine.
Claims13
An energy storage plant, comprising:
- a working fluid different from atmospheric air;
- a casing configured to store the working fluid, in a gaseous phase, wherein the casing is a pressure-balloon made of flexible material, the pressure-balloon being externally in contact with atmospheric air, an interior of the pressure-balloon delimiting a volume configured to contain the working fluid in pressure equilibrium with said atmospheric air;
- a tank configured to store said working fluid in liquid or super-critical phase with a temperature lower than 1.2 times a critical temperature of the working fluid in Kelvin, wherein said critical temperature is between 0° C. and 200° C.;
- and
- at least a driven machine different from an electric generator,
- wherein the plant is configured to perform a closed cyclic thermodynamic transformation, first in one direction in a charge configuration and then in an opposite direction in a discharge configuration, between said pressure-balloon and said tank,
- wherein in the charge configuration the plant stores heat and pressure, and
- wherein in the discharge configuration the plant generates mechanical energy and transfers the mechanical energy to the driven machine to drive said driven machine.
Dependencies are inferred from the claim text.