Effect of flow orientation on thermal-electrochemical transports in a PEM fuel cell |
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| Affiliation: | 1. Research Center for Advanced Science and Technology, Mingdao University, 369 Wenhua Rd., Peetou, Changhua 52345, Taiwan;2. Department of Electrical Engineering, Ta-Hua Institute of Technology, Hsinchu County 307, Taiwan;1. Beijing Key Laboratory of CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China;2. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;3. School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China;1. Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;2. Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Shenzhen Academy of Metrology & Quality Inspection, Shenzhen, 518055, China;1. Department of Mechanical and Aerospace Engineering, Seoul National Univ., Seoul 08826, Republic of Korea;2. Thermal and Fluid Research Team, Corporate R&D Institute, Doosan Heavy Industries & Construction, Youngin 39-3, Republic of Korea;3. Hyundai Maritime Research Institute, Hyundai Heavy Industries, Seoul, 03058, Republic of Korea;1. EDF R&D, 6, quai Watier, 78400 Chatou, France;2. I2M, Aix Marseille Université, 39, rue Joliot-Curie, 13453 Marseille, France |
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| Abstract: | A non-isothermal model of a proton exchange membrane (PEM) fuel cell in contact with interdigitated gas distributors has been performed. The model accounts for the major transports of convective and diffusive heat and mass transfer, electrode kinetics, and potential fields. The effects of flow orientation and total overpotential across a five-layer membrane-electrode assembly on the thermal behaviors in a PEM fuel cell are examined. A unique feature of the model is the implementation of a thermal-electrochemical algorithm to predict the fluid-phase temperature as well as the solid-matrix temperature in a PEM fuel cell. The simulation results reveal both the solid-matrix temperature and the fluid-phase temperature are increased with increasing total overpotential. Moreover, the fluid-phase and solid-matrix temperature distributions are significantly affected by the flow orientation in the PEM fuel cell. Replacing the parallel-flow geometry by the counter-flow geometry has an advantage of reducing the local maximum temperature inside the fuel cell. Thermal effects on the active material degradation and hence fuel cell durability will be incorporated in the future work. |
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