US 12,345,198 B1
Thermal impact of gas storage
Ashley Bernard Johnson, Milton (GB); and Jonathan Robert Hird, Cambridge (GB)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Jul. 9, 2024, as Appl. No. 18/767,604.
Int. Cl. F02C 6/16 (2006.01); F02C 6/18 (2006.01)
CPC F02C 6/16 (2013.01) [F02C 6/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system that stores and release compressed gas, the system comprising:
an accumulator configured to store compressed gas;
a gas compressor;
a thermal storage subsystem;
a plurality of secondary heater stages and a corresponding plurality of gas expander stages; and
a secondary heat source operably coupled to the plurality of secondary heater stages;
wherein the thermal storage subsystem is operably disposed between the gas compressor and the accumulator, and wherein the thermal storage subsystem is operably disposed between the accumulator and the plurality of secondary heater stages and the corresponding plurality of gas expander stages;
wherein the gas compressor is configured to produce compressed gas for supply to the accumulator via the thermal storage subsystem during accumulation operations;
wherein the thermal storage subsystem is operably configured to extract heat from the compressed gas produced by the gas compressor and supplied to the accumulator during the accumulation operations and store the heat for use in expansion operations, and wherein the thermal storage subsystem is operably configured to use heat stored by the thermal storage subsystem to heat compressed gas released from the accumulator for supply to the plurality of secondary heater stages and the corresponding plurality of gas expander stages in the expansion operations; and
wherein the plurality of secondary heater stages and the corresponding plurality of gas expander stages are configured to heat and expand compressed gas supplied from the accumulator and heated by the thermal storage subsystem, wherein the plurality of secondary heater stages use heat supplied by the secondary heat source to heat the compressed gas supplied from the accumulator and heated by the thermal storage subsystem.