A solid oxide fuel cell (SOFC) is expected to be applied to the distributed energy systems because of its high thermal efficiency and exhaust gas utilization. The exhaust heat from the SOFC can be transferred to the electric power by a gas turbine, and the high efficiency power generation can be achieved by constructing the SOFC and gas turbine hybrid system. In this study, the local processes in the electrodes and electrolyte of unit SOFC are analyzed taking into account the heat conduction, mass diffusion, electrode reactions and the transport of electron and oxygen ion. The temperature and concentration distributions perpendicular to the electrolyte membrane are shown. The effects of the operating conditions on the cell performance are also shown. Furthermore, the entropy generation and exergy loss of each process in the electrodes and electrolyte are analyzed and the reason for generating the exergy loss in the SOFC is clarified. It is noted that two electrode reactions are responsible for the major exergy loss.
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ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference
June 16–19, 2003
Atlanta, Georgia, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
0-7918-3686-X
PROCEEDINGS PAPER
Analysis of Electrochemical Performance and Exergy Loss in Solid Oxide Fuel Cell Available to Purchase
Kousuke Nishida,
Kousuke Nishida
Osaka University, Suita, Osaka, Japan
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Toshimi Takagi,
Toshimi Takagi
Osaka University, Suita, Osaka, Japan
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Shinichi Kinoshita
Shinichi Kinoshita
Osaka University, Suita, Osaka, Japan
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Kousuke Nishida
Osaka University, Suita, Osaka, Japan
Toshimi Takagi
Osaka University, Suita, Osaka, Japan
Shinichi Kinoshita
Osaka University, Suita, Osaka, Japan
Paper No:
GT2003-38094, pp. 85-94; 10 pages
Published Online:
February 4, 2009
Citation
Nishida, K, Takagi, T, & Kinoshita, S. "Analysis of Electrochemical Performance and Exergy Loss in Solid Oxide Fuel Cell." Proceedings of the ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. Volume 3: Turbo Expo 2003. Atlanta, Georgia, USA. June 16–19, 2003. pp. 85-94. ASME. https://doi.org/10.1115/GT2003-38094
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