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Research Papers

Biomass Solid Oxide Fuel Cell-Microgas Turbine Hybrid System: Effect of Fuel Composition

[+] Author and Article Information
Made Sucipta1

Graduate School of Engineering, Shibaura Institute of Technology, Saitama 337-8570, Japan

Shinji Kimijima

Department of Machinery and Control System, Shibaura Institute of Technology, Saitama 337-8570, Japan

Tae Won Song

Energy Laboratory, Samsung Advanced Institute of Technology, Yongin-Si 449-712, Korea

Kenjiro Suzuki

Graduate School of Engineering, Shibaura Institute of Technology, Saitama 337-8570, Japan; Department of Machinery and Control System, Shibaura Institute of Technology, Saitama 337-8570, Japan

1

Present address: Department of Mechanical Engineering, University of Udayana, Badung, 80361, Indonesia.

J. Fuel Cell Sci. Technol 5(4), 041006 (Sep 05, 2008) (8 pages) doi:10.1115/1.2890104 History: Received September 04, 2006; Revised November 12, 2007; Published September 05, 2008

Performance analysis of the solid oxide fuel cell-microgas turbine (SOFC-MGT) hybrid system has been made. We assume a fuel composition that is methane based with varying concentrations of other species that are expected to be present in biomass-derived gas streams in preparation for the study of biomass fueled SOFC-MGT hybrid system. This is based on the fact that the chemical composition of biomass fuel produced from different fuel production processes is diversified, i.e., in one case one chemical species rich in concentration and in another case another chemical species rich. In the analysis, the multistage model for internal reforming SOFC module developed previously with some modification is used. With this model, studies cover not only the performance of the hybrid system but also the spatial distributions of temperature and concentration of some chemical species inside the module, namely, in the cell stack and in the internal reformer.

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Copyright © 2008 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Schematic diagram of SOFC-MGT hybrid system

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Figure 2

Segments allocated in the module

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Figure 3

Changes of cell voltage and total electric current of the SOFC: (a) cell voltage and (b) electric current

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Figure 4

Changes of power produced by SOFC module and power produced by MGT: (a) SOFC power and (b) MGT power

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Figure 5

Changes of efficiency of hybrid system and efficiency of SOFC: (a) hybrid system efficiency and (b) SOFC efficiency

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Figure 6

Temperature distribution of solid along the longitudinal direction of SOFC: (a) internal reformer wall and (b) cell of SOFC

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Figure 7

Changes of averaged cell temperature

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Figure 8

Changes of gas concentration distribution in internal reformer: (a) inlet and (b) outlet

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Figure 9

Temperature distribution of gas along the longitudinal direction of SOFC: (a) F-0, (b) F-1, (c) F-2, (d) F-3, (e) F-4, and (f) F-5

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