Process design, integration, and optimization of a novel compressed air energy storage for the coproduction of electricity, cooling, and water

Seyed Mojtaba Alirahmi, Truls Gundersen, Ahmad Arabkoohsar, Jiří Jaromír Klemeš, Gürkan Sin, Haoshui Yu*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The use of fluctuating renewable energy over a certain threshold may lead to an unmanageable mismatch between the electricity generation and demand profiles threatening the grid's stability. In this study, an innovative complex energy storage/conversion system is proposed for the cogeneration of electricity, cooling, and water by integrating the liquefied natural gas (LNG) regasification process, an organic Rankine cycle, a compressed air energy storage (CAES) system, and a multi-effect distillation unit. The study attempts to minimize the CO2 emission from the CAES technology while addressing interruptions and reductions in the grid upon the extensive use of intermittent renewables. In addition, the proposed system uses excess power and waste heat during the charging and discharging of the CAES to regasify LNG and produce fresh water. The reference system performance is analyzed considering thermodynamic, economic, and environmental perspectives. The multi-objective grasshopper optimization algorithm is used to make a trade-off between the technical, economic, and environmental performance factors of the system. The results show an exergy efficiency of 50.6 % and a total cost rate of 322.8 $/h for the proposed system at the TOPSIS optimal point. The Grassmann diagram indicates the combustion chamber is the main source of irreversibility, and the Chord diagram revealed the discharge unit was responsible for more than 55 % of the total cost.
Original languageEnglish
Article number114034
JournalRenewable and Sustainable Energy Reviews
Volume189, Part B
Number of pages15
ISSN1364-0321
DOIs
Publication statusPublished - 2024

Keywords

  • 4E analysis
  • Energy and water
  • Energy storage
  • Multigeneration
  • Process integration
  • Renewable energy

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