US 12,421,940 B2
High-grade heat-of-compression storage system, and methods of use
Fahmi Osman Awale, London (GB); Colm John Cochrane, London (GB); Cian Quinn, London (GB); and Oliver James McArdle, London (GB)
Assigned to Highview Enterprises Limited, London (GB)
Appl. No. 18/686,016
Filed by HIGHVIEW ENTERPRISES LIMITED, London (GB)
PCT Filed Aug. 25, 2022, PCT No. PCT/GB2022/052190
§ 371(c)(1), (2) Date Feb. 23, 2024,
PCT Pub. No. WO2023/026052, PCT Pub. Date Mar. 2, 2023.
Claims priority of application No. 2112303 (GB), filed on Aug. 27, 2021.
Prior Publication US 2024/0240620 A1, Jul. 18, 2024
Int. Cl. F03G 7/06 (2006.01)
CPC F03G 7/06 (2013.01) 25 Claims
OG exemplary drawing
 
1. A cryogenic energy storage system comprising:
a liquefaction sub-system comprising:
a first compressor;
a first heat exchanger;
a second compressor;
a second heat exchanger;
a third heat exchanger; and
a first arrangement of conduits, having an upstream end and a downstream end, and configured to pass a process stream from the first compressor through the first heat exchanger, second compressor, second heat exchanger and third heat exchanger;
a thermal energy storage device configured to store high-grade heat; and
a second arrangement of conduits forming a closed circuit and configured to pass a heat transfer fluid between the thermal energy storage device, the first heat exchanger and the second heat exchanger;
wherein the first heat exchanger is positioned along the first arrangement of conduits downstream of the first compressor and configured to transfer at least a portion of high-grade heat of compression of the process stream from the first compressor, via the heat transfer fluid, to the thermal energy storage device;
wherein the second heat exchanger is positioned along the first arrangement of conduits downstream of the second compressor and configured to transfer at least a portion of high-grade heat of compression of the process stream from the second compressor, via the heat transfer fluid, to the thermal energy storage device; and
wherein the third heat exchanger is positioned along the first arrangement of conduits downstream of the second heat exchanger and configured to transfer at least a portion of low-grade heat of compression of the process stream from the second heat exchanger to the second compressor, thereby transferring the at least portion of low-grade heat of compression back into the second compressor.