Numerical study of a flat-tube high power density solid oxide fuel cell: Part II: Cell performance and stack optimization |
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| Affiliation: | 1. Fuel Cell Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea;2. School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea;1. Building Energy Research Group, Department of Building and Real Estate, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;2. New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China;1. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Science, Ningbo, Zhejiang, 315201, China;2. Nano Science and Technology Institute, University of Science & Technology of China, Suzhou, 215123, China;3. Department of Materials Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan;1. Energy System Engineering, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea;2. Advanced Combustion Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Republic of Korea;3. STX Heavy Industries Co. Ltd, 533 Dalseo-daero, Dalseo-gu, Daegu, Republic of Korea;1. Nigde University, Mechanical Engineering Department, 51245 Nigde, Turkey;2. Nigde University Prof. Dr. T. Nejat Veziroglu Clean Energy Research Center, 51245 Nigde, Turkey;3. Vestel Defense Industry, Universiteler Mah. Ihsan Dogramaci Bul. Titanyum Blok, 17/B Teknokent ODTU, 06800 Ankara, Turkey;4. Meliksah University, Mechanical Engineering Department, 38280 Kayseri, Turkey |
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| Abstract: | The flat-tube high power density (HPD) solid oxide fuel cell (SOFC) is a geometry based on a tubular type SOFC, and is being developed by Siemens Westinghouse and other international companies in Japan and Korea. It has increased power density, but still maintains the beneficial feature of secure sealing for a tubular SOFC. In this paper, the electric performance of a flat-tube HPD SOFC is studied. This paper also investigates the effects of the stack chamber number, stack shape, and other stack geometry features on the performance of the flat-tube HPD SOFC. The results show that the performance of a flat-tube HPD SOFC is better than a tubular SOFC with the same active cell surface, and that increasing the number of chambers number can improve the overall performance of a flat-tube HPD SOFC. The height of a flat-tube HPD SOFC and the thickness of the ribs do not have much effect on the performance of the cell as is expected. This study will help to design and optimize the flat-tube HPD SOFC. |
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