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A CFD model for analyzing multiphysics coupling and efficiency optimization in a PEMEC
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DOI：10.1016/j.jpowsour.2024.235678.png)
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摘要
En 中文
Proton exchange membrane electrolysis cell (PEMEC) is a promising hydrogen energy storage technology, which is very suitable for energy scheduling in microgrids. The multiple physical fields inside it are affected by many factors and form complex coupling states. In electrolysis, this complexity manifests as uneven distribution of temperature, current density, and liquid water volume fraction, which can lead to local hot spots, reactant starvation, and performance degradation. These challenges pose a threat to PEMEC's service life and operational safety in microgrid systems. Although several studies have explored their Computational Fluid Dynamics (CFD) modeling, the effects of certain operating parameters on their performance are unclear, and few studies have effectively evaluated energy efficiency, which is key to optimizing the operating conditions of the PEMEC system. Therefore, this study is employing a 2D (two dimensional) multiphysics model to investigate the electrochemical processes within PEMEC. The model's validity is being confirmed through comparison with electrochemical experimental data. Subsequently, the effects of applied voltage, anode inlet flow rate, and cathode inlet flow rate on the multiphysics are being examined, and trends in efficiency changes are being analyzed. Moreover, by optimizing operational conditions, maximum energy efficiency (79.0 %) can be achieved. This study is laying the groundwork for future investigations into control strategies and multi-objective optimization, and promoting the application of PEMEC in energy scheduling.
Keyword:
Multiphysical modeling
Proton exchange membrane electrolyzer
optimization
Energy efficiency optimization
PEM electrolyzer performance
期刊
IF:
7.9
论文数:
3.7W
被引数:
15.0W
机构
引用论文
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