Indirect-fired gas turbine dual fuel cell power cycle

An indirect-fired gas turbine cycle topped and bottomed with a fuel cell cycle for combined generation of electrical power, comprising:

• a compressor means for providing a stream of compressed air at an outlet thereof;
• a heat exchange means coupled to the outlet of the compressor means for heating said stream of compressed air through indirect heat exchange with a reheated stream of gases passing therethrough;
• a first fuel cell means including an anode means for receiving a first stream of fuel gas and a cathode means for receiving the heated stream of compressed air passing out of said heat exchanger;
• a first fuel supply means coupled to the anode means of said first fuel cell means for supplying a first stream of fuel thereto, at least a portion of the first stream of fuel at the anode means and the heated stream of compressed air at the cathode means undergoing an electrochemical reaction within the fuel cell means for producing an electrical output while generating streams of heated gases at the anode means and the cathode means;
• a first combustor means connected to receive the streams of heated gases from said anode means and said cathode means of said first fuel cell means for combusting the remaining portion of fuel in the stream of heated gases from the anode means of the first fuel cell means to further heat the pressurized gas stream passing therethrough to an output thereof;
• a gas turbine means having a pressurized gas intake and a low pressure exhaust and including an electric generator driven thereby for receiving said pressurized gas stream from the output of said first combustor means at said intake thereof to drive said turbine;
• a second fuel cell means including an anode means and a cathode means;
• a second fuel supply means coupled to the anode means of said second fuel cell means for supplying a second stream of fuel thereto, at least a portion of the second stream of fuel at the anode means of said second fuel cell means undergoing an electrochemical reaction with a stream of reactant gases at said cathode means of said second fuel cell means for producing an electrical output while generating further streams of heated gases at the anode means and cathode means, respectively, of said second fuel cell means;
• a second combustor means connected to receive the further stream of heated gases and the low pressure exhaust from said turbine means for combusting the remaining portion of fuel from said anode means of said second fuel cell means to provide said reheated stream of gases to said heat exchanger;
• and
• conduit means for passing said reheated stream of gases through said heat exchanger into the cathode means of said second fuel cell means.