Applied thermal engineering2022，Vol.20311.DOI:10.1016/j.applthermaleng.2021.117890

A novel liquid air energy storage system using a combination of sensible and latent heat storage

Ding, Yulong Li, Yunren Ahmad, Abdalqader Kim, Hyunjong Park, Sung-Ho Park, Jong-Po Branch, Simon Yu, Seunghan Ryu, Changkook Ryu, Ju-Yeol Alford, Adrian Lewis, Graham
Applied thermal engineering2022，Vol.20311.DOI:10.1016/j.applthermaleng.2021.117890
✕
  • NSTL
  • Elsevier

A novel liquid air energy storage system using a combination of sensible and latent heat storage

Ding, Yulong 1Li, Yunren 1Ahmad, Abdalqader 1Kim, Hyunjong 2Park, Sung-Ho 2Park, Jong-Po 2Branch, Simon 3Yu, Seunghan 4Ryu, Changkook 4Ryu, Ju-Yeol 2Alford, Adrian 3Lewis, Graham5
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作者信息

  • 1. Univ Birmingham
  • 2. Inst Adv Engn
  • 3. Innovatium
  • 4. Sungkyunkwan Univ
  • 5. Doosan Babcock
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Abstract

This paper proposes a novel stand-alone liquid air energy storage (LAES) system to enhance round-trip efficiency (RTE) using a thermal energy storage system. Thermal energy storage comprises sensible heat storage with quartz and latent heat storage with cryogenic phase change material (PCM) for recycling cold energy from the LAES discharge process. The liquid air in the pressurized tank was released during the discharge cycle and used to store energy using PCM and quartz. The cryogenic phase change material melts at 110 K based on experimental result, making it possible to provide cold heat of fusion 61.62 kJ/kg at a constant temperature for air liquefaction. Thus, proposed system can effectively increase the cold energy recycle. In addition, the two-dimension numerical model allowed us to estimate the outlet temperature of sensible heat store without isothermal assumption by Biot Number. The proposed process is modified from Linde-Hampson, and a sensitivity analysis is performed using ASPEN HYSYS. The analysis shows that the implementation of energy recycling from the compressor and thermal store leads to a high round-trip efficiency (60.6%) higher than base case (34.4%) of LAES system. Therefore, the proposed system is a promising process in terms of simplification and high efficiency, cognizant of the integration of waste heat from industrial plants.

Key words

Liquid Air/Energy Storage System/Phase Change Material/Sensible heat storage/Latent heat storage/PHASE-CHANGE MATERIALS/PACKED-BED/THERMODYNAMIC ANALYSIS/PERFORMANCE/COLD/EFFICIENCY

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出版年

2022
Applied thermal engineering

Applied thermal engineering

EISCI
ISSN：1359-4311
被引量16
参考文献量37
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