Multi-Stage Solid Oxide Fuel Cell–Gas Turbine Combined Cycle Hybrid Power Plant System

Today, the need to develop more efficient thermal power systems that emit less greenhouse effect gas has become a paramount importance. In line with this awareness, our research has leapt into such development that the combination of SOFC and Gas Turbine could generate power at extremely high efficiency. In this paper, we would like to present our concept of Inter Cooled Multistage SOFC-GT Hybrid Power System, developed to maximize fuel heat input to the system. We propose the combination of F-class GT (TIT 1350°C class) and 5 stage SOFC as the best for the hybrid power plant system and 77% (LHV base) is achieved at high pressure ratio.