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TECHNICAL PAPERS: Gas Turbines: Cycle Innovations, and Marine

Off-Design Performance Analysis of a Hybrid System Based on an Existing Molten Fuel Cell Stack

[+] Author and Article Information
P. Bedont

Ansaldo Fuel Cells, Genova, Italy

O. Grillo, A. F. Massardo

Thermochemical Power Group (TPG), Dipartimento di Macchine Sistemi Energetici e Trasporti, Università di Genova, Genova, Italy

J. Eng. Gas Turbines Power 125(4), 986-993 (Nov 18, 2003) (8 pages) doi:10.1115/1.1587742 History: Received December 01, 2001; Revised March 01, 2002; Online November 18, 2003
Copyright © 2003 by ASME
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References

Parodi, F., and Sanderson, R. A., 1994, “100 kW MCFC Power Plant: Ansaldo System Analysis,” Proceedings of the 1994 Fuel Cell Seminar, FCS Organizing Committee, San Diego, CA.
Bosio, B., and Massardo, A. F., 2000, “Assessment of Molten Carbonate Fuel Cell Models and Integration With Gas and Steam Cycles,” ASME J. Eng. Gas Turbines Power, to be published.
Bedont, P., and Massardo, A. F., 2001, “Heat Recovering and Pressurisation for an Existing 100 kWe Molten Carbonate Fuel Cell,” TESEC Congress, Genoa, June (in Italian).
Bedont, P., 1999, “Molten Carbonate Fuel Cells Modelisation and Integration With Power Generation Plants,” Master thesis, University of Genoa (in Italian).
Grillo, O., 2001, “Design and Part Load Performance of a Hybrid System Based on a Molten Carbonate Fuel Cell and a Microgasturbine,” Master thesis, University of Genoa (in Italian).
Hirschenhofer, J. H., Stauffer, D. B., and Engleman, R. R., 1994, Fuel Cells Handbook (revision 3), US-DOE, Morgantown, WV.
Bosio, B., 1999, “Development of Fuel Cell Technology,” Ph.D. thesis, Politecnico of Torino (in Italian).
Bosio, B., Arato, E., and Parodi, F., 2001, “Fuel Cell Power Plant Process Analysis Using Aspen Plus,” Proceedings of the 4th Conference on Process Integration, Modelling and Optimization for Energy Saving and Pollution Reduction, Florence, Italy.
Bosio, B., Parodi, F., Arato, E., and Costamagna, P., 1999, “Process Analysis of a Molten Carbonate Fuel Cell Pilot Plant,” Proceedings of the Ichea P4 Conference, May, Florence, Italy, AIDIC-Servizi, Milano, p. 651.
Costamagna,  P., Magistri,  L., and Massardo,  A. F., 2001, “Design and Part Load Performance of a Hybrid System Based on a Solid Oxide Fuel Cell Reactor and a Micro Gas Turbine,” Journal of Power Resources, 96, pp. 352–368.
Huchida, H., Shiraki, M., Bessho, A., and Yagi, Y., 1994, “Development of a Centrifugal Compressor for 100 kW Automotive Ceramic Gas Turbine,” ASME Paper No. 94-GT-73.
Pullen, K. R., Baines, N. C., and Hill, S. H., 1992, “The Design and Evaluation of a High Pressure Ratio Radial Turbine,” ASME Paper No. 92-GT-93.

Figures

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Molten carbonate fuel cell (MCFC) stack (Ansaldo Fuel Cells)
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Proof of concept power plant Ansaldo Fuel Cells MCFC
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Hybrid system simplified layout (fuel cell system is represented inside dashed boundary)
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Stack inlet temperatures by reducing power at fixed recycle rates
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Operating parameters at part-load condition
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Internal recycle rates at part-load condition
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CU efficiency and plant fuel utilization rate at part-load condition
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Cell voltage and Nernst potential versus currently density
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Fuel cell system utilization rates at part-load condition
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Hybrid system (HS) operating parameters at part-load condition
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Internal recycle rates at part-load condition
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Hybrid system (HS) and fuel cell system (FC) efficiency versus net nondimensional power supplied by the plant
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Percentage of net power supplied by the stack and inlet turbine temperature versus net nondimensional power supplied by the whole hybrid system
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Actual and Nernst potential of the cell against current density
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Fuel and oxygen utilization rates, and CH4 converted by sensible heat reformer, versus nondimensional power supplied by the hybrid system
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Inlet temperature at part-load condition
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Inlet cathodic percentage of CO2 (mass fraction rate) at the part-load condition
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Air compressor working points at part load conditions, when a variable turbine rotational speed is available
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Fuel cell efficiency at different turbine rotational speed versus net nondimensional power supplied by the hybrid system
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Hybrid system efficiency at different rotational speed versus net nondimensional power supplied by the plant

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