Experimental study on ammonia-based thermochemical resorption thermal energy storage system

Ting Yan, Tian Xie, W.G. Pan and L.W. Wang

Renewable Energy, 2024, vol. 229, issue C

Abstract: Thermochemical sorption heat storage technology is an attractive way for thermal energy storage, the application of thermal energy storage technologies improves the mismatch between energy supply and demand in time and space, and reduces adverse environmental impacts. It contributes to the realization of cleaner and more efficient energy systems. For the thermochemical resorption system, MnCl2–SrCl2/NH3 was selected as the working pair. A laboratory-scale thermochemical resorption heat storage device was constructed, and the MnCl2–SrCl2/NH3 thermochemical resorption system's heat storage capacity under various operating circumstances was assessed. The effect of several factors on the heat storage capacity of the thermochemical resorption system was assessed using comparative studies of operating parameters. Under the low-temperature salt adsorption/regeneration temperatures of 20 °C, 45 °C for discharging, and 177 °C for charging, the maximum value of the total heat storage density is 2027.74 kJ/kg composite adsorbent. The total heat storage efficiency varies from 0.354 to 0.947. This work is beneficial to promote the application of thermochemical sorption heat storage technology in the low-grade thermal energy recovery, and thus improve the efficiency of energy utilization and achieve the energy-saving as well.

Keywords: Resorption; Manganese chloride; Thermochemical sorption heat storage; Composite material; Ammonia (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:229:y:2024:i:c:s096014812400764x

DOI: 10.1016/j.renene.2024.120696

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