51. Effect of partition arrangement of metal hydrides and phase change materials on hydrogen absorption performance in the metal hydride reactor.
- Author
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Dai, Hui, Chen, Zeqi, Cao, Hongmei, Tian, Zhongyu, Zhang, Min, Wang, Xiaolong, He, Suoying, Wang, Wenlong, and Gao, Ming
- Subjects
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HEAT of reaction , *HYDROGEN storage , *HYDRIDES , *GEOTHERMAL reactors , *HYDROGEN content of metals , *PHASE change materials - Abstract
Metal hydride (MH) suffers from strong thermal effects during hydrogen absorption. To fully utilize the reaction heat during hydrogen absorption, phase change material (PCM) can be used to achieve efficient thermal management in the reactor. A novel MH-PCM reactor with the partition arrangement of MH and PCM was proposed in this paper. Then, the two-dimensional multiphysics coupled model of the reactor was developed, and the effects of the number of partitions n , the mass of PCM and the hydrogen absorption pressure P a on the hydrogen absorption performance were discussed detailedly. The results indicated that the novel MH-PCM reactor not only increases the heat transfer area and boots the hydrogen absorption rate, but also improves the uniformity of temperature distribution. As the n increases from 2 to 5, the hydrogen absorption time gradually shortens. Compared to the conventional MH-PCM reactor, the time for 90% hydrogen absorption shortens by 67.13%. Furthermore, the hydrogen absorption rate can be enhanced with the increasing mass of PCM and P a. However, the larger these values are, the weaker the enhancement effect becomes. The results of this paper may provide a new direction for the optimized design and engineering application of MH-PCM reactors. • A novel reactor with the partition arrangement of MH and PCM is proposed. • Effects of partition number, hydrogen storage pressure and PCM mass are examined. • Novel reactor boosts hydrogen absorption rate and improves temperature uniformity. • The hydrogen absorption time is shortened by 67.13% via a partition number of 5. • Absorption enhancement ratio reduces as hydrogen pressure and PCM mass increase. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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