Experimental analysis of hydrogen storage performance of a LaNi5–H2 reactor with phase change materials

氢气储存 放热反应 核工程 吸热过程 储能 热能储存 材料科学 氢化物 制氢 放热过程 吸附低温 热力学 化学工程 化学 吸附 有机化学 功率(物理) 工程类 物理
作者
Büşra Arslan,Mustafa İlbaş,Selahattin Çelik
出处
期刊:International Journal of Hydrogen Energy [Elsevier]
卷期号:48 (15): 6010-6022 被引量:12
标识
DOI:10.1016/j.ijhydene.2022.11.083
摘要

Energy storage, especially thermal energy storage, has an important place in terms of efficient use of energy. Systems in which phase change materials (PCMs) are used are among the thermal energy storage (TES) options, thanks to their advantages such as energy storage at almost constant temperature. The use of PCM as a TES material in the metal hydride (MH) reactor is an influential method to store the heat released by the exothermic reaction occurring in the hydrogen charging process and to recover this heat with the endothermic reaction occurring in the hydrogen discharge process. In the present study, hydrogen charge and discharge processes in a LaNi5–H2 reactor were experimentally investigated and compared with and without PCM. Therefore, a hybrid system was designed by integrating PCM around the cylindrical MH reactor filled with LaNi5 alloy. The hydration process was carried out at both constant pressure and variable pressure. The temperature changes on the reactor surface and inside the PCM were measured over time. In experiments to determine the change in the amount of hydrogen stored in MH reactors over time, it was determined that the hydrogen storage pressure and reactor design significantly affect the hydrogen charge-discharge rate. Considering the use of MH reactors in transportation vehicles such as automobiles and submarines, designing a hybrid MH-PCM storage system is promising for the development of hydrogen storage technologies and transportation technologies.
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