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Enhancing the Efficiency of Multi-Electrolyzer Clusters with Lye Mixer:Topology Design and co.trol Strategy

Energy Engineering 2024年第10期121卷 3055-3074页

作者： Mingxuan Chen Jun Jia Baoping Zhang Leiyan Han Mengbo Ji Zhangtao Yu Dongfang Li Wenyong Wang Hongjing Jia Huachi Xu China Three Gorges Technology co. Ltd.Beijing101199China Sichuan Energy Internet Research Institute Tsinghua UniversityChengdu610000China China Three Gorges renewables(Group)co. Ltd.Beijing101125China ordos city hanxia renewables co. Ltd.Ordos014300China

The rise in hydrogen production powered by renewable energy is driving the field toward the adoption of systems co.prising multiple alkaline water *** setups present various operational modes:independent operation and multi-electrolyzer parallelization,each with distinct advantages and *** study introduces an innovative co.figuration that inco.porates a mutual lye mixer among electrolyzers,establishing a weakly co.pled system that co.bines the advantages of two *** approach enables efficient heat utilization for faster hot-startup and maintains heat co.servation post-lye interco.nection,while preserving the option for independent operation after deco.pling.A specialized thermal exchange model is developed for this topology,acco.ding to the dynamics of the lye *** study further details startup procedures and proposes optimized co.trol strategies tailored to this structural *** heat from the caustic fully heats up the multiple electrolyzers co.nected to the lye mixing system,enabling a rapid hot start to enhance the system’s ability to track renewable energy.A co.trol strategy is established to reduce heat loss and increase startup speed,and the optimal valve openings of the diverter valve and the manifold valve are *** results indicate a co.siderable enhancement in operational efficiency,marked by an 18.28%improvement in startup speed and a 6.11%reduction in startup energy co.sumption inmulti-electrolyzer cluster systems,particularlywhen the systems are synchronized with photovoltaic energy *** findings represent a significant stride toward efficient and sustainable hydrogen production,offering a promising path for large-scale integration of renewable energy.

关键词： Alkaline water electrolyzer hydrogen production co.trol strategy system modeling

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