Cycle analysis of planar SOFC power generation with serial connection of low and high temperature SOFCs
| Autor: | Kazuo Onda, Takahiro Ohba, Shinya Takezawa, Takuto Araki, Yoshinori Sakaki |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Exhaust heat Renewable Energy Sustainability and the Environment business.industry Nuclear engineering Electrical engineering Oxide Energy Engineering and Power Technology Serial port Atmospheric temperature range Power generation system Overpotential chemistry.chemical_compound Electricity generation Planar chemistry Electrical and Electronic Engineering Physical and Theoretical Chemistry business |
| Zdroj: | Journal of Power Sources. 158:52-59 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2005.09.003 |
| Popis: | Solid oxide fuel cells (SOFCs) can be composed of solid components for stable operation, and high power generation efficiency is obtained by using high temperature exhaust heat for fuel reforming and bottoming power generation by a gas turbine. Recently, low-temperature SOFCs, which run in the temperature range of around 600 °C or above and give high power generation efficiency, have been developed. On the other hand, a power generation system with multi-staged fuel cells has been proposed by the United States DOE to obtain high efficiency. In our present study, a power generation system consisting of two-staged SOFCs with serial connection of low and high temperature SOFCs was investigated. Overpotential data for the low-temperature SOFC used in this study are based on recently published data, while data for high-temperature SOFC are based on our previous study. The numerical results show that the power generation efficiency of the two-staged SOFCs is 50.3% and the total efficiency of power generation with gas turbine is 56.1% under standard operating conditions. These efficiencies are a little higher than those by high-temperature SOFC only. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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