CPC F02C 6/16 (2013.01) [F02C 1/04 (2013.01); F17C 1/007 (2013.01); F17C 2203/0685 (2013.01); F17C 2221/013 (2013.01); F17C 2223/0123 (2013.01); F17C 2227/0157 (2013.01); F17C 2227/0302 (2013.01); F17C 2227/0341 (2013.01); F17C 2270/016 (2013.01); F17C 2270/0581 (2013.01)] | 17 Claims |
1. A system for subterranean energy storage, the system comprising:
a subterranean flexible storage vessel coupled to a heat exchanger, wherein the heat exchanger is configured to supply a cooled compressed gas stream to the subterranean flexible storage vessel, wherein the subterranean flexible storage vessel is at least partially surrounded by sand;
a turbine generator coupled to the subterranean flexible storage vessel, wherein the subterranean flexible storage vessel is configured to supply a pressurized gas stream that is heated by the sand to the turbine generator; and
a second turbine generator coupled to an insulated storage vessel, wherein the insulated storage vessel supplies a heated coolant stream byproduct of the heat exchanger removing heat from a hot compressed gas stream to render the cooled compressed gas stream.
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