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 CO{sub}2 CAPTURE

摘要

This paper examines two coal-based hybrid configurations that employ separated anode and cathode streams for the capture and compression of CO{sub}2. 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 CO{sub}2 capture and compression. The power that is required to capture and compress the CO{sub}2 is shown to be approximately 15% of the total plant power.