| Autor: |
Duan, Xudong, Wang, Xin, Hu, Bohai, Wang, Jiarui, Wang, Simin |
| Zdroj: |
Industrial & Engineering Chemistry Research; August 2024, Vol. 63 Issue: 34 p15245-15256, 12p |
| Abstrakt: |
Water electrolysis for hydrogen production is one of the most promising technologies for addressing future energy crises. The electrolytic cell’s structure and flow field distribution directly and critically impact its energy consumption and the hydrogen yield. This article constructs a high coupling numerical model with multiple physical fields for the industrial electrolytic cell, which considers the interaction among electrochemical reactions, mass transfer, and multiphase flow. This model provides detailed information on the flow field and phase distribution inside the electrolytic cell, and the structure−performance relationship between the inlet and outlet structures and the electrolytic and flow performance of the electrolytic cell is studied. The study found that the electrolytic cell with the three imports and exports structure has higher hydrogen production and lower energy consumption compared to the single import and export structure, with a 3.22% increase in hydrogen production and a 2.95% reduction in specific energy consumption. As the import angle increases and the export angle decreases, the electrochemical performance of the electrolytic cell gradually improves but the uniformity of electrolyte velocity deteriorates. There is no synergy between the structural parameters and various optimization objectives. Further analysis of variance is used to establish the correlation between structural parameters and performance indicators, and a multiobjective genetic algorithm is used to obtain an optimized structure that satisfies both the flow performance and electrochemical performance. |
| Databáze: |
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