Multi-Objective Optimization of Blockage Design Parameters Affecting the Performance of PEMFC by OEM-AHP-EWM Analysis
Adding blockages to the gas flow channels in the bipolar plates has a significant effect on the performance of the proton exchange membrane fuel cell (PEMFC). The design parameters of the gas flow channels with blockages mainly include the blockage shape (<i>S</i>), blockage number (<...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/18/6/1407 |
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| Summary: | Adding blockages to the gas flow channels in the bipolar plates has a significant effect on the performance of the proton exchange membrane fuel cell (PEMFC). The design parameters of the gas flow channels with blockages mainly include the blockage shape (<i>S</i>), blockage number (<i>N</i>), blockage height (<i>H</i>), and channel–rib width ratio (<i>CRWR</i>) value. This paper systematically examines the combined effects of <i>S</i>, <i>N</i>, <i>H</i>, and <i>CRWR</i> value on current density (<i>I</i>), pressure drop (Δ<i>P</i>), net output power (<i>W</i><sub>net</sub>), and non-uniformity of oxygen distribution (<i>NU</i>) of PEMFC through the application of the orthogonal experimental method (OEM). To provide a comprehensive optimization strategy, a novel multi-criteria decision framework is introduced, which integrates the analytic hierarchy process (AHP) and entropy weight method (EWM) to balance different evaluation objectives. Results from the AHP-EWM analysis reveal that the weight values of <i>I</i>, Δ<i>P</i>, <i>W</i><sub>net</sub>, and <i>NU</i> are 0.415, 0.08, 0.325, and 0.18, respectively. The <i>CRWR</i> value exhibits the greatest effect on the comprehensive performance of PEMFC, followed by <i>H</i>, <i>N</i>, and <i>S</i>. The optimal design parameter combination identified in this paper is a triangular blockage with nine blockages, a height of 0.8 mm, and a <i>CRWR</i> value of 0.25, corresponding to the highest comprehensive score of 31.8306 among the 25 groups of orthogonal experiments. This paper provides a new optimization perspective and certain guidance for the performance optimization direction of PEMFC. |
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| ISSN: | 1996-1073 |