A numerical model has been developed for the performance analysis of solid oxide fuel cell (SOFC)/micro gas turbine (MGT) hybrid systems with prereforming of natural gas, in which a quasi two-dimensional model has been built up to simulate the cell electrochemical reaction, heat and mass transfer within tubular SOFC. The developed model can be used not only to predict the overall performance of the SOFC/MGT hybrid system but also to reveal the nonuniform temperature distribution within SOFC unit. The effects of turbine inlet temperature (TIT) and pressure ratio (PR) on the performance of the hybrid system have been investigated. The results show that selecting smaller TIT or PR value will lead to relative higher system efficiency and lower CO2 emission ratio; however, this will raise the risk to destroy SOFC beyond the limitation temperature of electrolyte.
Conceptual Design and Performance Analysis of SOFC/Micro Gas Turbine Hybrid Distributed Energy System
National Engineering Research Center
of Fluid Machinery and Compressors,
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received October 30, 2014; final manuscript received November 15, 2014; published online January 28, 2015. Editor: Nigel M. Sammes.
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Dang, Z., Zhao, H., and Xi, G. (June 1, 2015). "Conceptual Design and Performance Analysis of SOFC/Micro Gas Turbine Hybrid Distributed Energy System." ASME. J. Fuel Cell Sci. Technol. June 2015; 12(3): 031003. https://doi.org/10.1115/1.4029395
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