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- W2976672010 abstract "In this work, we discuss the effect of multiphase flow dynamics on the performance of a PEM electrolyzer. We obtained images of a flow system consisting of O2 and water at two stages of gas production: gas evolution via bubbles and gas exiting through the channels of a flow field. We processed the obtained images of bubble evolution with a MATLAB-based bubble detection and counting algorithm, and we found that the bubble detachment sizes remained invariant within a water flow range between 0.07 and 4.65 l h−1. We measured an average bubble detachment radius of 22.47 μm. We applied a bubble force balance developed by van Helden et al. [1] to model the observed effect of water flow on bubble evolution, and we found that the bubble detachment radius is a weak function of water flow when the water flow is below 60 l h−1. We found that the variables that affect the bubble detachment radius the strongest were the electrode's hydrophobicity and pore size." @default.
- W2976672010 created "2019-10-03" @default.
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- W2976672010 date "2019-10-01" @default.
- W2976672010 modified "2023-10-14" @default.
- W2976672010 title "Detecting and modeling oxygen bubble evolution and detachment in proton exchange membrane water electrolyzers" @default.
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- W2976672010 doi "https://doi.org/10.1016/j.ijhydene.2019.08.253" @default.
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