Optimization of Cathode Gas Distribution for Commercial Proton Exchange Membrane Fuel Cell Stacks Based on Multiple Geometric Parameters of Eccentric Headers
Special Topic Hydrogen Fuel Cell Performance Improvement Technology|更新时间:2025-12-08
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Optimization of Cathode Gas Distribution for Commercial Proton Exchange Membrane Fuel Cell Stacks Based on Multiple Geometric Parameters of Eccentric Headers
Journal of Xi'an Jiaotong UniversityVol. 59, Issue 12, Pages: 1-10(2025)
YIN Renjie, BAI Fan, TAO Wenquan. Optimization of Cathode Gas Distribution for Commercial Proton Exchange Membrane Fuel Cell Stacks Based on Multiple Geometric Parameters of Eccentric Headers[J]. Journal of Xi'an Jiaotong University, 2025, 59(12): 1-10.
DOI:
YIN Renjie, BAI Fan, TAO Wenquan. Optimization of Cathode Gas Distribution for Commercial Proton Exchange Membrane Fuel Cell Stacks Based on Multiple Geometric Parameters of Eccentric Headers[J]. Journal of Xi'an Jiaotong University, 2025, 59(12): 1-10.DOI: 10.7652/xjtuxb202512001.
Optimization of Cathode Gas Distribution for Commercial Proton Exchange Membrane Fuel Cell Stacks Based on Multiple Geometric Parameters of Eccentric Headers
To address the problem of uneven gas distribution at the cathode of proton exchange membrane fuel cell(PEMFC)stacks for better stack performance
a distribution uniformity enhancement method is proposed based on the co-optimization of multiple geometric parameters of eccentric headers.For the purpose of this study
a limited sample dataset is constructed through computational fluid dynamics simulations
and then reconstructed into modal space with corresponding coordinates by proper orthogonal decomposition(POD);polynomial curve fitting is employed to accurately characterize the nonlinear mapping relationship between the modal coordinates and parameters;based on the reconstructed modal space
a parameter-based prediction model is built for cathode gas distribution in an eccentric header.The results show that the prediction model is proved to be of high precision(coefficient of determination up to 0.911).The geometric parameters of the eccentric header have significant interaction
with a nonlinear effect on the cathode gas distribution.By using the predication model
the optimal parameter combination can be identified
as evidenced by the reduction of the gas distribution non-uniformity indicator at the cathode from 7.69% in the initial model to 4.04% after optimization
achieving a 47.5% improvement.This significant improvement in the uniformity of cathode gas distribution is realized without expanding the cross-section of the manifold
and may enhance the volumetric power density of the stack.Therefore
the proposed POD-based dimensionality reduction and polynomial fitting method can efficiently deciphers the mechanism of synergistic effects of multiple geometric parameters in stack headers and improve cathode gas distribution uniformity
providing a reliable optimization strategy for the design of PEMFC stack headers.
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