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Performance improvement of air-breathing proton exchange membrane fuel cell stacks by thermal management
Affiliation:1. Department of Energy and Refrigerating Air-Conditioning Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan;2. Research Center of Energy Conservation for New Generation of Residential, Commercial, and Industrial Sectors, National Taipei University of Technology, Taipei, 10608, Taiwan;3. Department of Mechanical and Energy Engineering, National Chiayi University, Chiayi City, 60004, Taiwan;4. Mechanical and Energy Engineering Department, Shahid Beheshti University, Tehran, Iran;5. School of Chemical Engineering, The University of Queensland, St. Lucia, 4072, Australia;1. Université Grenoble Alpes, 621 avenue Centrale, 38400, Saint Martin d''Hères, France;2. CEA-LITEN, DTNM/SENCI/LMSE, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France;3. CEA-DSM, INAC/SPrAM/PCI, UMR-5819, CEA-CNRS-UJF, 17 Rue de Martyrs, 38054, Cedex 9 Grenoble, France;4. Electrochemistry Laboratory (LEC) and Neutron Imaging and Activation Group (NIAG), Paul Scherrer Institut, CH-5232, Villigen, PSI, Switzerland;1. School of Mechatronic Systems Engineering, Simon Fraser University, 250-13450 102 Avenue, Surrey, BC V3T 0A3, Canada;2. Ballard Power Systems, Inc., 9000 Glenlyon Parkway, Burnaby, BC V5J 5J8, Canada;1. School of Mechatronic Systems Engineering, Simon Fraser University, 250-13450 102 Avenue, Surrey, BC, V3T 0A3, Canada;2. Alternative Energy Department, Indian Oil R&D Centre, Sector-13, Faridabad, 121002, India;1. Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Thailand;2. Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Thailand;1. Department of Mechanical Engineering, Yuan Ze University, Chung-Li 32003, Taiwan, ROC;2. The Fuel Cell Center, Yuan Ze University, Chung-Li 32003, Taiwan, ROC;1. Clean Energy Research Center, Temasek Polytechnic, Singapore 529757, Singapore;2. Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576, Singapore;3. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Abstract:Air-breathing is known as a way to reduce the weight, volume, and the cost of PEMFCs. In this study, the thermal management of the high-powered air-breathing PEMFC stacks by applying different cathode flow channel configurations is carried out to improve the stack performance. In order to verify the thermal management results, numerical simulation is also performed. The research results show that a combination of the 50% and 58.3% opening ratios in the air-breathing stack reduces the stack temperature and enhances the temperature distribution uniformity, leading to a better and more stable stack performance. In addition, it is found that the stack performance is significantly improved under the assisted-air-breathing condition. Moreover, the simulation results and the experimental data are basically consistent. It is suggested to adopt the average temperature over the cross-sectional flow region from simulation as fitting the simulation results and the measured data.
Keywords:Air-breathing proton exchange membrane fuel cell stack  Cathode channel design  Thermal management  Opening ratio  Temperature distribution
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