Thermodynamic analysis and optimization of pumped thermal–liquid air energy storage (PTLAES)

Liang Wang, Xipeng Lin, Han Zhang, Long Peng, Haoshu Ling, Shuang Zhang and Haisheng Chen

Applied Energy, 2023, vol. 332, issue C, No S0306261922017561

Abstract: Low-cost, high-density, and efficient energy storage technologies are important supports for large-scale installation of renewable energy. In this paper, a novel pumped thermal–liquid air energy storage (PTLAES) system is proposed, which converts electricity to heat and liquid air and re-converts them to electricity when needed. This PTLAES system has a high energy storage density owing to the nonrequirement of low-density cold storage devices. In this study, the thermodynamic behavior of basic, precooling, and multistage types of this PTLAES system under different pressure parameters were studied. The results showed that the round-trip efficiencies achieved by the PTLAES systems were in the range of 58.7 %–63.8 %, with the energy storage density reaching up to 107.6 kWh/m3 when using basalt as the thermal energy storage material.

Keywords: Liquid air energy storage; Pumped thermal electricity storage; Energy storage; Thermal energy storage; Thermodynamic (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (5)

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DOI: 10.1016/j.apenergy.2022.120499

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