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US 10,655,913 B2Granted
Method for energy storage with co-production of peaking power and liquefied natural gas
OwnerStanislav Sinatovinventor
Life of this patent
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Abstract
A method for energy storage which integrates charging a liquid in an energy storage facility through consumption of a power from the grid with reduction pressure of natural gas through expander at the co-located city gate station and includes recovery of mechanical power of the natural gas expander and cold thermal energy of the expanded natural gas for an increase in production of liquid air per each kW of low-demand power consumed from the grid during off-peak hours.
Claims4
A method for an energy storage, comprising in combination:
- charging an energy storage facility with a liquid air, as an energy storing medium, produced through consumption of a power from a grid and/or any co-located power source plant:
- reducing a pressure of a delivered natural gas at a co-located city gate station from a high pressure at a station inlet down to a low pressure at a station outlet with resulting production of a cooled low-pressure natural gas stream;
- and
- characterized in that:
- depressurizing the delivered natural gas at the co-located city gate station is performed with producing a power which is used for at least a partial meeting of a demand for said power consumed during charging the energy storage facility;
- and
- producing the cooled low-pressure natural gas stream at the co-located city' gate station during charging the energy storage facility is supplemented by simultaneous using a cold thermal energy of said cooled low-pressure natural gas stream for cooling an air being compressed during said production of the liquid air resulting in reducing the energy storage facility demand for the power consumed.
4 more elements
Dependencies are inferred from the claim text.