Fuel and Gas Turbine Hybrid Systems

An MCFC-Gas Turbine (MCFC/GT) cycle may utilize the exhaust from the gas turbine to create steam for a steam cycle. This cycle, MCFC/GT-ST cycle, can be very efficient however, it will be more expensive than the MCFC/GT cycle and has not been demonstrated as of yet. A more probable scenario is to directly use the exhaust heat of the MCFC fuel cell to create steam for a 

Steam cycle. This would be much simpler than the MCFC/GT-ST cycle and would also allow the fuel cell to operate at atmospheric pressure. This cycle, again, would likely be more expensive than the MCFC/GT cycle and be less efficient because of the irreversible losses in heat exchange. In the case of directly creating steam from the fuel cell exhaust, the fuel cell would replace the combustor. 

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