RECUPERATIVE ATMOSPHERIC-PRESSURE SOFC/GAS TURBINE HYBRID CYCLE

PROBLEM TO BE SOLVED: To provide a method of operating a coupled system of a gas turbine having an atmospheric-pressure solid oxide fuel cell power generator (6), a compressor (1) and an expansion part (2). SOLUTION: First flow (60) and second flow (62) are made to flow out by passing an inlet oxidizer (20) through the compressor (1). The first flow (60) is passed through a flow control valve (56) and a first heat exchanger (54) to be mixed with the second flow (62). The mixed flow (66) is passed through a second heat exchanger (4), the combustor (8) and the expansion part (2) of the gas turbine to flow into the solid oxide fuel cell power generator (6) to supply a fuel (40) to the power generator to operate a coupled system. COPYRIGHT: (C)2006,JPO&NCIPI