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One-dimensional metal-hydride tank model and simulation in Matlab Simulink

机译:Matlab Simulink中的一维金属氢化物罐模型和仿真

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A model has been developed for a metal-hydride tank for hydrogen storage, based on linked modular mathematical models in Simulink. The objective of the work was a tank level model suitable for incorporation into a whole-of-system model, implying modest computing demands and reduced complexity. Finite-element analysis was not used. Because the apparent kinetics of a practicable metal-hydride tank is dominated by heat flow originating in the enthalpy of hydrogen absorption/desorption, particular attention was paid to modelling the effective thermal conductivity, based on a detailed description of the thermal resistance between hydride particles. The model was tested against our own experimental data for a pair of tanks with 6.4 kg total hydrogen capacity, and compared with a published 2D model and published experimental data. In all cases, the new model performed very well. The incorporation of a physical model of the effective thermal conductivity means that the tank model can also be used as a research tool to investigate ways of improving tank performance by altering the physical characteristics of the metal hydride itself to achieve an optimal thermal design and enhanced reaction kinetics. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译:基于Simulink中链接的模块化数学模型,已经开发了一种用于存储氢的金属氢化物罐的模型。这项工作的目标是一个适合合并到整个系统模型中的坦克级模型,这意味着适度的计算需求和降低的复杂性。没有使用有限元分析。由于可行的金属氢化物罐的表观动力学受氢吸收/解吸焓产生的热流支配,因此,基于对氢化物颗粒之间热阻的详细描述,特别注意对有效导热率进行建模。该模型已针对我们自己的实验数据进行了测试,该实验数据用于一对总容量为6.4 kg的储氢罐,并与已发布的2D模型和已发布的实验数据进行了比较。在所有情况下,新模型都表现良好。结合有效导热系数的物理模型意味着该储罐模型还可以用作研究工具,通过改变金属氢化物本身的物理特性来实现最佳的热设计和增强的反应,从而研究改善储罐性能的方法动力学。 (C)2018氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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