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Examination of the Effect of System Pressure Ratio and Heat Recuperation on the Efficiency of a Coal Based Gas Turbine Fuel Cell Hybrid Power Generation System With CO2 Capture

[+] Author Affiliations
John G. VanOsdol, Randall Gemmen, Eric Liese

National Energy Technology Laboratory, Morgantown, WV

Paper No. FuelCell2008-65083, pp. 407-415; 9 pages
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • Denver, Colorado, USA, June 16–18, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4318-1 | eISBN: 0-7918-3822-6


This paper examines two coal-based hybrid configurations that employ separated anode and cathode streams for the capture and compression of CO2 . One configuration uses a standard Brayton cycle, and the other adds heat recuperation ahead of the fuel cell. Results show that peak efficiencies near 55% are possible, regardless of cycle configuration, including the cost in terms of energy production of CO2 capture and compression. The power that is required to capture and compress the CO2 is shown to be approximately 15% of the total plant power.



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