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Comparative analysis of air and CO2 as working fluids for compressed and liquefied gas energy storage technologies
Tianjin University of Commerce, China.
Tianjin University of Commerce, China.
University College London, UK.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-6279-4446
2019 (English)In: Energy Conversion and Management, ISSN 0196-8904, E-ISSN 1879-2227, Vol. feb, p. 608-620Article in journal (Refereed) Published
Abstract [en]

With the large-scale use of intermittent renewable energy worldwide, such as wind energy and solar energy, energy storage systems are urgently needed and have been rapidly developed. Technologies of compressed gas energy storage (CGES) and liquefied gas energy storage (LGES) are playing an important role, and air has been commonly used as working fluid. CO2 is another potential working fluid and attracting more and more attention due to the rise of CO2 capture and utilization. However, it is still unclear which is the better working fluid. This paper comparatively analyzed the performance of CGES and LGES systems using air and CO2 as working fluids. Both diabatic and adiabatic CGES are considered. Simulation results show that except diabatic CGES systems, using CO2 could achieve a similar or even higher round-trip efficiency than using air. In addition, the use of CO2 instead of air as a working fluid has additional advantages, such as a lower storage temperature can be achieved at the same storage pressure for the adiabatic CGES system; and a higher condensing temperature can be achieved at the same condensing pressure for the LGES system, which can benefit the system design and operation.

Place, publisher, year, edition, pages
2019. Vol. feb, p. 608-620
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-41805DOI: 10.1016/j.enconman.2018.12.031ISI: 000458221800048Scopus ID: 2-s2.0-85059173064OAI: oai:DiVA.org:mdh-41805DiVA, id: diva2:1273384
Available from: 2018-12-20 Created: 2018-12-20 Last updated: 2019-02-28Bibliographically approved

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Li, Hailong

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf