Performance analysis of sorption thermal battery for high-density cold energy storage enabled by novel tube-free evaporator

Jingwei Chao, Jiaxing Xu, Taisen Yan, Shizhao Xiang, Zhaoyuan Bai, Ruzhu Wang and Tingxian Li

Energy, 2023, vol. 273, issue C

Abstract: Cold energy storage is of significance to thermal management of electrical devices, air-conditioning, building energy-saving, and renewable energy utilization. Sorption thermal battery (STB) has distinct advantage of high-energy-density cold storage based on liquid-gas vaporization heat when compared with conventional cold storage technologies in the form of sensible heat or solid-liquid latent heat. However, STB suffers from low-power-density energy storage due to its poor heat and mass transfer during reversible solid-gas sorption processes. Here, a novel tube-free evaporator is proposed and designed for STB to reduce thermal resistance and accelerate sorption rate. The effects of the tube-free evaporator on the heat and mass transfer of STB prototype for cold energy storage are investigated and discussed. The thermal resistance of evaporator can be reduced by 94.9% and the sorption-evaporation rate can be accelerated by 24.2% by using the novel tube-free evaporator. Correspondingly, the STB prototype exhibits superior cold storage performance with improved energy density and peak power density by 32.8% and 50%, respectively. The heat design strategy of tube-free evaporator provides a new solution to develop high-energy/power-density STB for cold storage.

Keywords: Sorption thermal battery; Massive cold storage; Tube-free evaporator; Numerical model (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:273:y:2023:i:c:s0360544223006424

DOI: 10.1016/j.energy.2023.127248

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