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Analytical modeling of polarizations in a solid oxide fuel cell using biomass syngas product as fuel
Affiliation:1. David Reay & Associates, PO Box 25, Whitley Bay, Tyne & Wear NE26 1QT, UK.;2. Department of Mechanical, University of Illinois at Chicago, 842 West Taylor Street, Chicago, IL 60607-7022;3. Universitá Tor Vergata Roma, Italy;4. Universitá di Pisa, Italy;5. University of Minnesota, United States.;1. Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran;2. Department of Mechanical Engineering, University of Bonab, Bonab, Iran;3. Department of Mining and Metallurgical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran;4. Department of Energy, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129, Torino, Italy;1. Centre for Process Systems Computations, Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;2. Ceramic Fuel Cells Ltd., Noble Park, Victoria 3174, Australia;1. AGH University of Science and Technology, Faculty of Energy and Fuels, 30 Mickiewicza Ave., 30-059 Krakow, Poland;2. AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, 30 Mickiewicza Ave., 30-059 Krakow, Poland;3. Kyoto University, Department of Aeronautics and Astronautics, Nishikyo-ku, 615-8540 Kyoto, Japan;1. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China;2. North Japan Research Institute for Sustainable Energy, Hirosaki University, Aomori 030-0813, Japan;3. School of Electric and Electronic Information Engineering, Jilin Jianzhu University, Changchun 130118, China;1. Chair of Energy Process Engineering, Friedrich-Alexander-University Erlangen-Nürnberg, Fuerther Str. 244f, 90429 Nuremberg, Germany;2. School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, 200240 Shanghai, PR China;3. Paul Scherrer Institut, Forschungsstr. 111, 5232 Villigen PSI, Switzerland;4. School of Environmental Science and Engineering, Tong Ji University, Siping Road 1239, 200092 Shanghai, PR China;5. Guangzhou Institute of Energy Conversion, Chinese Academy of Science, No.2 Nengyuan Road, 510640 Guangdong, PR China;1. Department of High Temperature Electrochemical Processes, Institute of Power Engineering, Augustowka 36, 02-981 Warsaw, Poland;2. Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665 Warsaw, Poland
Abstract:An analytical model is developed to study fuel type effect on polarizations and performance of SOFC. We consider especially two types of fuel: pure hydrogen and syngas (mixture of H2 and CO) produced by biomass gasification. The proposed model is based on simultaneous direct oxidation of H2 and CO at the anode side and uses the dusty-gas model with appropriate diffusion coefficient (binary or mixture coefficient in porous material) to evaluate the concentration polarization and the Butler–Volmer equation to calculate the activation polarization when ohmic polarization is expressed by the well known Ohm’s law. Results analysis show that a fraction of CO of about 24% in syngas improves the performance of SOFC by 23% compared to that obtained by pure H2.
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