Performance assessment of two compressed and liquid carbon dioxide energy storage systems: Thermodynamic, exergoeconomic analysis and multi-objective optimization

Lei Sun, Bo Tang and Yonghui Xie

Energy, 2022, vol. 256, issue C

Abstract: Nowadays, large-scale energy storage systems (EES) are a crucial mechanism to realize large-scale grid-connected power generation from renewable energy. And the development of co-generation systems coupled with EES has encouraging economic potential. In this paper, two compressed and liquid carbon dioxide energy storage systems without extra heat/cold sources are proposed (denoted as LCES-E and LCES-EC). The system's principles are presented; the thermodynamic and exergoeconomic analyses models are developed; the effects of five primary parameters are obtained by parametric analysis; meanwhile, the potential of the systems is revealed by multi-objective optimization. The results show that both systems can provide stable electricity and cold simultaneously. The better cooling capacity makes LCES-EC superior, with the RTE, EVR and cptot reaching 78.66%, 12.69 kWh/m3 and 41.23 $/GJ. The compressor and turbine exergy destruction and cost exceed 55% of all components, and appropriately high levels of ηC and ηT are preferred for both efficiency and economy. The LCES-EC system guarantees both electrical efficiency and cold capacity, showing preferable features over previously reported systems.

Keywords: Compressed and liquid carbon dioxide energy storage systems; Thermodynamic and exergoeconomic analyses; Parametric analysis; Multi-objective optimization (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:256:y:2022:i:c:s0360544222015511

DOI: 10.1016/j.energy.2022.124648

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