Simplified anode architecture for PEMFC systems based on alternative fuel feeding: Experimental characterization and optimization for automotive applications |
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| Affiliation: | 1. Univ. Grenoble Alpes, CEA, LITEN, DEHT, F-38000 Grenoble, France;2. Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, F-38000 Grenoble, France;1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing, 100084, PR China;2. Zhengzhou Yutong Bus Co.,Ltd, Yutong Industrial Park, Yutong Road, Zhengzhou, 450061, PR China;1. Clean Energy Automotive Engineering Center, Tongji University, Shanghai, 201804, China;2. School of Automotive Studies, Tongji University, Shanghai, 201804, China;3. LENZ Fuel Cell Tech Co., Ltd, Shanghai, 201804, China;1. Aalto University, School of Chemical Technology, P.O. Box 16100, 00076 Aalto, Finland;2. VTT Technical Research Centre of Finland, P.O. Box 1000, 02044 VTT, Finland |
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| Abstract: | The need to reduce PEMFC systems cost as well as to increase their durability is crucial for their integration in various applications and especially for transport applications. A new simplified architecture of the anode circuit called Alternating Fuel Feeding (AFF) offers to reduce the development costs. Requiring a new stack concept, it combines the simplicity of Dead-End Anode (DEA) with the operation advantages of the hydrogen recirculation. The three architectures (DEA, recirculation and AFF) are compared in terms of performance on a 5-kW test bench in automotive conditions, through a sensitivity analysis. A gain of 17% on the system efficiency is observed when switching from DEA to AFF. Moreover, similar performances are obtained both for AFF and for recirculation after an accurate optimization of the AFF tuning parameters. Based on DoE data, a gain of 25% on the weight of the anodic line has been identified compared to pulsed ejector architecture and 43% with the classic recirculation architecture with blower only (Miraï). |
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| Keywords: | Hydrogen feed strategy Anode system architecture Multiple hydrogen injection Fuel cell system Automotive conditions Sensitivity analysis |
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