SIMULATION RESEARCH OF HYDROGEN ABSORPTION AND DESORPTION PROCESS IN METAL HYDRIDE HYDROGEN STORAGE VESSEL

Yuan Tian; Liu Xuewu

doi:10.19912/j.0254-0096.tynxb.2022-1867

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 492-498. DOI: 10.19912/j.0254-0096.tynxb.2022-1867

SIMULATION RESEARCH OF HYDROGEN ABSORPTION AND DESORPTION PROCESS IN METAL HYDRIDE HYDROGEN STORAGE VESSEL

Yuan Tian¹, Liu Xuewu²

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Abstract

In this work, the mathematical model of hydrogen absorption/desorption of metal hydride was established based on hydrogen storage alloy LaNi₅, besides, the model was simulated by COMSOL. Based on this model, the effects of straight tube, fin tube and spiral tube structure on hydrogen absorption and desorption performance of hydrogen storage vessel were analyzed. The results indicate that the hydrogen storage vessels with internal fins or spiral tubes can significantly improve the hydrogen absorption/desorption performance. The temperature cloud diagram shows that the heat transfer in the structure of internal wall fins of vessel is from the heat exchange wall to the center of the container, while the heat transfer in the vessel with spiral tubes is from spiral tube to all sides which makes the metal hydride hydrogen storage vessel with spiral tube have higher heat transfer efficiency. Compared with the basic model, the time required to reach 90% of the maximum hydrogen absorption/desorption capacity of the hydrogen storage vessel with spiral tube is reduced by 31.58% and 31.12% respectively.

Key words

hydrogen storage alloy / heat exchange fins / heat transfer performance / hydrogen storage vessel / spiral tube

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Yuan Tian, Liu Xuewu. SIMULATION RESEARCH OF HYDROGEN ABSORPTION AND DESORPTION PROCESS IN METAL HYDRIDE HYDROGEN STORAGE VESSEL[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 492-498 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1867

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