High-grade heat-of-compression storage system, and methods of use

A cryogenic energy storage system for storing using high-grade heat-of-compression, including a liquefaction sub-system 100 and thermal energy storage device 300. The liquefaction sub-system 100 includes a first compressor 102, a first, second and third heat exchanger 104, 116, 112 and second compre...

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Bibliographische Detailangaben
Hauptverfasser: Colm John Cochrane, Cian Quinn, Oliver James MCardle, Fahmi Osman Awale
Format: Patent
Sprache:eng
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Zusammenfassung:A cryogenic energy storage system for storing using high-grade heat-of-compression, including a liquefaction sub-system 100 and thermal energy storage device 300. The liquefaction sub-system 100 includes a first compressor 102, a first, second and third heat exchanger 104, 116, 112 and second compressor 114. The first and second heat exchangers 104, 116 are configured to transfer the high-grade heat of compression from the first and second compressors respectively to the thermal energy storage device. The third heat exchanger is configured to recuperate the low-grade heat of compression from the second compressor back into the second compressor enabling the second compressor to generate high-grade heat of compression. Also disclosed is a similar liquefaction system, wherein a third compressor 117 is positioned along the second arrangement of conduits, and compresses the heat transfer fluid from the fluid compressor, and a first expander is positioned along the second arrangement of conduits downstream of the energy storage device, configured to expand the heat transfer fluid and extract work therefrom