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Title: Indirect-fired gas turbine dual fuel cell power cycle

A fuel cell and gas turbine combined cycle system which includes dual fuel cell cycles combined with a gas turbine cycle wherein a solid oxide fuel cell cycle operated at a pressure of between 6 to 15 atms tops the turbine cycle and is used to produce CO.sub.2 for a molten carbonate fuel cell cycle which bottoms the turbine and is operated at essentially atmospheric pressure. A high pressure combustor is used to combust the excess fuel from the topping fuel cell cycle to further heat the pressurized gas driving the turbine. A low pressure combustor is used to combust the excess fuel from the bottoming fuel cell to reheat the gas stream passing out of the turbine which is used to preheat the pressurized air stream entering the topping fuel cell before passing into the bottoming fuel cell cathode. The CO.sub.2 generated in the solid oxide fuel cell cycle cascades through the system to the molten carbonate fuel cell cycle cathode.
 [1];  [2];  [2]
  1. (Sacramento, CA)
  2. (Morgantown, WV)
Issue Date:
OSTI Identifier:
United States of America as represented by United States (Washington, DC) NETL
Patent Number(s):
US 5541014
Research Org:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
Country of Publication:
United States
indirect-fired; gas; turbine; dual; fuel; cell; power; cycle; combined; cycles; solid; oxide; operated; pressure; 15; atms; tops; produce; molten; carbonate; bottoms; essentially; atmospheric; combustor; combust; excess; topping; heat; pressurized; driving; bottoming; reheat; stream; passing; preheat; air; entering; cathode; generated; cascades; turbine cycle; combined cycle; fuel cell; pressurized air; cell power; air stream; gas stream; gas turbine; oxide fuel; solid oxide; carbonate fuel; atmospheric pressure; molten carbonate; pressurized gas; power cycle; cell cycle; stream entering; cell cathode; dual fuel; indirect-fired gas; /429/