Effects of water-gas shift reaction on simulated performance of a molten carbonate fuel cell |
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| Affiliation: | 1. Department of Chemical Engineering, Hong-Ik University, KEPRI, 72-1 Sangsudong, Mapoku, Seoul 121-791, South Korea;2. Korea Electric Power Research Institute, 103-16 Munjidong, Yusongku, Taejon 305-380, South Korea;3. Battery & Fuel Cell Research Center, KIST, Seoul 121-791, South Korea;1. Institute of Low Temperature and Structure Research, PAS, Okolna 2, 50-422 Wroclaw, Poland;2. Université Clermont Auvergne, SIGMA Clermont, Institut de Chimie de Clermont-Ferrand, BP 10448, F-63000 Clermont-Ferrand, France;1. Department of Chemical Engineering, Zhenjiang College, Zhenjiang 212000, People''s Republic of China;2. School of Environmental & Chemical Engineering, Jiangsu University of Science & Technology, Zhenjiang 212000, People''s Republic of China;1. Faculty of Chemistry, Bu-Ali Sina University, Hamedan 6517838683, Iran;2. Pharmaceutical Engineering Laboratory, School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11155/4563, Tehran, Iran;3. Department of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad 6541835583, Iran;1. Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Polizu Street No 1, 011061 Bucharest, Romania;2. Laboratoire de Chimie, CNRS, Université Claude Bernard, ENS-Lyon, 46 Allée d׳Italie, 69364 Lyon cedex 07, France |
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| Abstract: | A molten carbonate fuel cell (MCFC) is simulated. In order to determine the effects of the water-gas shift reaction, the calculated results such as temperature distribution, voltage distribution, conversion and performance, are compared with those calculated excluding the shift reaction. Uniformity in the temperature profile is deteriorated due to the shift reaction. At the entrance, hydrogen is consumed rapidly in order to reach the equilibrium state of the shift reaction. The conversion of hydrogen decreases along the direction of gas flow because of hydrogen generated by the shift reaction. Therefore, when the shift reaction is excluded, the conversion of hydrogen is higher than that in a practical cell. Additionally, at the same current density, the voltage calculated without the shift reaction would be higher than the real value. The effect of the shift reaction on the voltage distribution and cell performances is quite small. |
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