Techno-economic assessment of an efficient liquid air energy storage with ejector refrigeration cycle for peak shaving of renewable energies

Shadi Bashiri Mousavi, Pouria Ahmadi, Mahdieh Adib and Ali Izadi

Renewable Energy, 2023, vol. 214, issue C, 96-113

Abstract: Among large-scale energy storage systems, liquid air energy storage (LAES) is one of a potential choices, storing off-peak electricity or power from renewable energy sources with high energy density in the form of liquid air in an artificial tank, not being dependent on geological attributes. However, this system suffers from low efficiency, therefore waste heat recovery and integration with other energy systems would enhance the performance of the system. In this research study, a combined cooling, heating, and power generation (CCHP) system is integrated with the LAES to not only enhance the efficiency of the LAES but also to satisfy the cooling and heating needs. Thus, the Organic Rankine cycle (ORC) coupling with the ejector refrigeration system is employed for this purpose. The energy and exergy analyses are employed considering the economic (3E analysis) performance of the introduced system to evaluate the outputs. results show that the system generates 34927 kWh of electricity, 424 kW cooling power, and 729 kW heating power in the peak time. The designed combined system is 13% more efficient in comparison to a stand-alone LAES system. About 5058 kWh exergy is destructed during discharging. Additionally, considering California as a case study the payback of 2.98 years was obtained for the designed system.

Keywords: Liquid air energy storage; Combined cooling and heating; Organic rankine cycle; Ejector refrigeration system; 3E analysis (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:214:y:2023:i:c:p:96-113

DOI: 10.1016/j.renene.2023.05.113

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