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Potential exergy storage capacity of salt caverns in the Cheshire basin using adiabatic compressed air energy storage
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Dooner, Mark and Wang, Jihong (2019) Potential exergy storage capacity of salt caverns in the Cheshire basin using adiabatic compressed air energy storage. Entropy, 21 (11). 1065. doi:10.3390/e21111065
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WRAP-potential-exergy-storage-capacity-salt-caverns-Cheshire-basin-using-adiabatic-compressed-air-energy-storage-Wang-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2279Kb) | Preview |
Official URL: http://dx.doi.org/10.3390/e21111065
Abstract
As the number of renewable energy sources connected to the grid has increased, the need to address the intermittency of these sources becomes essential. One solution to this problem is to install energy storage technologies on the grid to provide a buffer between supply and demand. One such energy storage technology is Compressed Air Energy Storage (CAES), which is suited to large-scale, long-term energy storage. Large scale CAES requires underground storage caverns, such as the salt caverns situated in the Cheshire Basin, UK. This study uses cavern data from the Cheshire Basin as a basis for performing an energy and exergy analysis of 10 simulated CAES systems to determine the exergy storage potential of the caverns in the Cheshire Basin and the associated work and power input and output. The analysis revealed that a full charge of all 10 caverns could store 25.32 GWh of exergy, which can be converted to 23.19 GWh of work, which requires 43.27 GWh of work to produce, giving a round trip efficiency of around 54%. This corresponds to an input power of 670.07 GW and an output power of 402.74 GW. The Cheshire Basin could support around 100 such CAES plants, giving a potential total exergy storage capacity of 2.53 TWh and a power output of 40 TW. This is a significant amount of storage which could be used to support the UK grid. The total exergy destroyed during a full charge, store, and discharge cycle for each cavern ranged from 299.02 MWh to 1600.00 MWh.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Engineering | |||||||||
| Library of Congress Subject Headings (LCSH): | Compressed air , Compressed air -- Storage , Energy storage , Exergy, Compressed air -- Underground storage, Compressed air -- Underground storage -- England -- Cheshire basin | |||||||||
| Journal or Publication Title: | Entropy | |||||||||
| Publisher: | M D P I AG | |||||||||
| ISSN: | 1099-4300 | |||||||||
| Official Date: | 30 October 2019 | |||||||||
| Dates: |
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| Date of first compliant deposit: | 28 May 2020 | |||||||||
| Volume: | 21 | |||||||||
| Number: | 11 | |||||||||
| Article Number: | 1065 | |||||||||
| DOI: | 10.3390/e21111065 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access | |||||||||
| Copyright Holders: | MDPI | |||||||||
| RIOXX Funder/Project Grant: |
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| Open Access Version: |
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