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Performance of a solid state hydrogen storage device with finned tube heat exchanger

Singh, Anurag and Maiya, M Prakash and Murthy, S Srinivasa (2017) Performance of a solid state hydrogen storage device with finned tube heat exchanger. In: International Symposium on Innovative Materials for Processes in Energy Systems (IMPRES), OCT 23-26, 2016, Taormina, ITALY, pp. 26855-26871.

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2017.06.071


In the present study, a cylindrical solid state hydrogen storage device embedded with finned heat exchanger is numerically investigated. The finned heat exchanger consists of two `U' shaped tube and circular fins brazed on the periphery of the tubes. 1 kg of LaNi5 alloy is filled inside the device and 80 g of copper flakes is evenly distributed in between the fins to increase the overall thermal conductivity of the metal hydride. Water is used as heat transfer fluid. Absorption performance of the storage device is investigated at constant hydrogen supply pressure of 15 bar and cooling fluid temperature and velocity of 298 K and 1 m/s respectively. At these operating conditions, the required charging time is found to be around 610 s for a storage capacity of 12 g (1.2 wt%). The study is extended to examine the influence of different heat exchanger configurations based on number of fins, thickness of the fins, diameter of tubes, holes in fins, amount of copper flakes etc. An analysis for the same weight of the heat exchanger assembly has also been carried out by changing the number of fins at different thickness and pitch. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Department/Centre: Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research
Date Deposited: 23 Dec 2017 09:24
Last Modified: 22 Oct 2018 11:34
URI: http://eprints.iisc.ac.in/id/eprint/58459

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