A novel design for humidifying an open-cathode proton exchange membrane fuel cell using anode purge |
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| Affiliation: | 1. Department of Mechanical Engineering and Advanced Institute of Manufacturing with High-tech Innovations, National Chung Cheng University, 168, University Rd, Minhsiung Township, Chiayi County, 621301, Taiwan;2. School of Physics and Materials Science, Shoolini University, Solan, 173229, India;3. hiPower Green Technology Co., Ltd., Hsinchu County, 302045, Taiwan;4. Center of Excellence in Process and Energy Systems Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand |
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| Abstract: | The low performance of open-cathode proton-exchange-membrane fuel cells (OCPEMFCs) is attributed to the low-humidity ambient air supplied to the cathode using electric fans. To improve the OCPEMFC performance, this paper proposes a novel humidification method by collecting water purged from the anode and supplying it to the open cathode. The OCPEMFC performance is evaluated at various humidifier distances from the cathode inlet, and it is compared with that where no humidifier is used when the OCPEMFC operates under three different current levels of 1, 5, and 8 A. The results show that the novel design improves the stack power, and optimal performance is achieved at a humidifier distance of 2 cm. The energy efficiency achieves an improvement between 1.4% and 1.8% when a humidifier is used. |
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| Keywords: | Proton exchange membrane fuel cell Open cathode Humidifier Anode purge Energy efficiency |
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