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

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.