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Sustainable energy storage - with hot air, cold air and liquid air
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MacKay, Robert S. (2020) Sustainable energy storage - with hot air, cold air and liquid air. Contemporary Physics, 61 (1). pp. 1-11. doi:10.1080/00107514.2020.1794380 ISSN 0010-7514.
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WRAP-sustainable-energy-storage-with-hot-air-cold-air-liquid-air-Mackay-20202.pdf - Accepted Version - Requires a PDF viewer. Download (1706Kb) | Preview |
Official URL: https://doi.org/10.1080/00107514.2020.1794380
Abstract
In memory of Sir David John Cameron MacKay FRS FInstP FICE (22 April 1967 – 14 April 2016). David was passionate about sustainable energy. One key element for sustainable energy is energy storage. As a small tribute, this article presents a review from a physics perspective of the thermodynamics of compressed air energy storage. Firstly, I treat adiabatic compressed air energy storage, where the heat of compression of the air is kept in the compressed air. Then I discuss improvements that can be made by combining compressed air energy storage with external heat stores. Next, I address isothermal compressed air energy storage, where the temperature is allowed to equilibrate with the environment. In each case, I consider two scenarios: underground caverns and underwater airbags. Finally, I address the case where the air is compressed and cooled so much that it liquifies. Throughout, I explain that the real point is to store available work, called exergy in the engineering community, rather than energy. Although my treatment is mostly from the ideal point of view of quasistatic processes, I give some pointers to technological implementations of the various methods and to some references on their thermodynamic efficiencies.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QC Physics T Technology > TJ Mechanical engineering and machinery |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | ||||||||
| Library of Congress Subject Headings (LCSH): | Compressed air, Compressed air -- Storage , Energy storage , Exergy, Renewable energy sources | ||||||||
| Journal or Publication Title: | Contemporary Physics | ||||||||
| Publisher: | Taylor & Francis | ||||||||
| ISSN: | 0010-7514 | ||||||||
| Official Date: | 2020 | ||||||||
| Dates: |
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| Volume: | 61 | ||||||||
| Number: | 1 | ||||||||
| Page Range: | pp. 1-11 | ||||||||
| DOI: | 10.1080/00107514.2020.1794380 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Reuse Statement (publisher, data, author rights): | This is an Accepted Manuscript of an article published by Taylor & Francis in Contemporary Physics on 11/08/2020, available online: http://www.tandfonline.com/10.1080/00107514.2020.1794380 | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 8 June 2020 | ||||||||
| Date of first compliant Open Access: | 11 August 2021 | ||||||||
| RIOXX Funder/Project Grant: |
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