Experiments on a novel metal hydride cartridge for hydrogen storage and low temperature thermal storage

Malleswararao, K and Aswin, N and Kumar, P and Dutta, P and Srinivasa Murthy, S (2022) Experiments on a novel metal hydride cartridge for hydrogen storage and low temperature thermal storage. In: International Journal of Hydrogen Energy, 47 (36). pp. 16144-16155.

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Abstract

Even though metal hydrides have been mainly studied for hydrogen storage, their applications can be extended to thermal energy storage by utilizing the exothermic and endothermic reactions during the hydride formation and decomposition processes, respectively. In this paper, a low temperature hydride, La0.75Ce0.25Ni5 is experimentally investigated for hydrogen storage and thermal energy storage applications. Heat and mass transfer characteristics of a novel scalable cartridge type reactor is studied at various heat transfer fluid temperatures and hydrogen supply pressures. Maximum hydrogen storage capacity of 1.38 wt and a gravimetric thermal energy storage capacity of 127.01 kJ.kgMH-1 at about 70 efficiency were achieved. The energy storage capacity achieved during experiments is compared with the theoretically possible output by defining a performance index, namely, the energy storage effectiveness, and its maximum value was found to be 0.67 at 20 °C and 20 bar. © 2022 Hydrogen Energy Publications LLC

Item Type:	Journal Article
Publication:	International Journal of Hydrogen Energy
Publisher:	Elsevier Ltd
Additional Information:	The copyright for this article belongs to Elsevier Ltd
Keywords:	Cerium alloys; Heat storage; Heat transfer; Hydrides; Lanthanum alloys; Mass transfer; Temperature; Ternary alloys; Thermal energy, Cartridge reactor; Endothermic reactions; Energy storage capacity; Hydride formation; La0.75ce0.25ni5; Lows-temperatures; Metal-hydrides; Storage temperatures; Thermal energy storage; Thermal storage, Hydrogen storage
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	18 May 2022 09:08
Last Modified:	18 May 2022 09:08
URI:	https://eprints.iisc.ac.in/id/eprint/71839

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