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US 11,686,527 B2Granted
Cryogenic liquid energy storage
AssigneePintail Power LLC
InventorWilliam M Conlon
Life of this patent
Estimating the term…
Abstract
Apparatus, systems, and methods use cryogenic liquids such as, for example, liquefied natural gas and liquefied air or liquefied air components to store thermal energy. The cryogenic liquids may be produced using electrically powered liquefaction methods, for example, using excess electric power during periods of over-generation on the electric grid.
Claims16
A method of storing and recovering energy, the method comprising:
- regasifying liquid air or liquid air components to produce gaseous air or gaseous air components using heat from an exhaust gas stream from a turbine;
- expanding the regasified liquid air or liquid air components through at least one stage of expansion in an engine without combusting the regasified liquid air or liquid air components;
- mixing the expanded regasified liquid air or liquid air components with inlet air to a compressor to form an air mixture;
- compressing the air mixture with the compressor and introducing the compressed air mixture into a combustor;
- introducing a fuel into the combustor and combusting it with the compressed air mixture to form a hot gaseous working fluid;
- and
- expanding the hot gaseous working fluid through the turbine to form the exhaust gas stream from the turbine.
4 more elements
Dependencies are inferred from the claim text.