Fuel Cell is widely regarded as a potential alternative in the electric utility due to its distinct advantages of high energy conversion efficiency, low environmental impact and flexible uses of fuel types. In this paper we demonstrate the enhancement of thermal efficiency and power density of the power plant system by incorporating a hybrid cycle of Solid Oxide Fuel Cell (SOFC) and gas turbine with appropriate configurations. In this paper, a hybrid system composed of SOFC, gas turbine, compressor and high temperature heat exchanger is developed and simulated in the Virtual Test Bed (VTB) computational environment. The one-dimensional tubular SOFC model is based on the electrochemical and thermal modeling, accounting for the voltage losses and temperature dynamics. The single cell is discretized using a finite volume method where all the governing equations are solved for each finite volume. Simulation results show that the SOFC-GT hybrid system could achieve a 70% total electrical efficiency (LHV) and an electrical power output of 853KW, around 30% of which is produced by the power turbine. Two conventional power plant systems, i.e. gas turbine recuperative cycle and pure Fuel Cell power cycle, are also simulated for the performance comparison to validate the improved performance of Fuel Cell/Gas Turbine hybrid system. Finally, the dynamic behavior of the hybrid system is presented and analyzed based on the system simulation.
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ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference
July 8–12, 2007
Vancouver, British Columbia, Canada
Conference Sponsors:
- Heat Transfer Division
ISBN:
0-7918-4275-4
PROCEEDINGS PAPER
System Configuration and Performance Studies of Solid Oxide Fuel Cell -Gas Turbine Hybrid Cycle
Wei Jiang,
Wei Jiang
University of South Carolina, Columbia, SC
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Ruxian Fang,
Ruxian Fang
University of South Carolina, Columbia, SC
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Jamil A. Khan,
Jamil A. Khan
University of South Carolina, Columbia, SC
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Roger A. Dougal
Roger A. Dougal
University of South Carolina, Columbia, SC
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Wei Jiang
University of South Carolina, Columbia, SC
Ruxian Fang
University of South Carolina, Columbia, SC
Jamil A. Khan
University of South Carolina, Columbia, SC
Roger A. Dougal
University of South Carolina, Columbia, SC
Paper No:
HT2007-32671, pp. 63-70; 8 pages
Published Online:
August 24, 2009
Citation
Jiang, W, Fang, R, Khan, JA, & Dougal, RA. "System Configuration and Performance Studies of Solid Oxide Fuel Cell -Gas Turbine Hybrid Cycle." Proceedings of the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference, Volume 2. Vancouver, British Columbia, Canada. July 8–12, 2007. pp. 63-70. ASME. https://doi.org/10.1115/HT2007-32671
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