Direct FuelCell/Turbine Power Plant
This report includes the progress in development of Direct Fuel Cell/Turbine. (DFC/T.) power plants for generation of clean power at very high efficiencies. The DFC/T power system is based on an indirectly heated gas turbine to supplement fuel cell generated power. The DFC/T power generation concept extends the high efficiency of the fuel cell by utilizing the fuel cell's byproduct heat in a Brayton cycle. Features of the DFC/T system include: electrical efficiencies of up to 75% on natural gas, 60% on coal gas, minimal emissions, simplicity in design, direct reforming internal to the fuel cell, reduced carbon dioxide release to the environment, and potential cost competitiveness with existing combined cycle power plants. FCE successfully completed testing of the pre-alpha sub-MW DFC/T power plant. This power plant was constructed by integration of a 250kW fuel cell stack and a microturbine. Following these proof-of-concept tests, a stand-alone test of the microturbine verified the turbine power output expectations at an elevated (representative of the packaged unit condition) turbine inlet temperature. Preliminary design of the packaged sub-MW alpha DFC/T unit has been completed and procurement activity has been initiated. The preliminary design of a 40 MW power plant including the key equipment layout and the site plan was completed. A preliminary cost estimate for the 40 MW DFC/T plant has also been prepared. The tests of the cascaded fuel cell concept for achieving high fuel utilizations were completed. The tests demonstrated that the concept results in higher power plant efficiency. Alternate stack flow geometries for increased power output/fuel utilization capabilities are also being evaluated.
- Research Organization:
- FuelCell Energy, Danbury, CT (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-00NT40798
- OSTI ID:
- 888917
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
20 FOSSIL-FUELED POWER PLANTS
24 POWER TRANSMISSION AND DISTRIBUTION
30 DIRECT ENERGY CONVERSION
BRAYTON CYCLE
CARBON DIOXIDE
COAL GAS
COMBINED-CYCLE POWER PLANTS
DESIGN
EFFICIENCY
FUEL CELLS
GAS TURBINES
NATURAL GAS
POWER GENERATION
POWER PLANTS
POWER SYSTEMS
PROCUREMENT
PROGRESS REPORT
TESTING
TURBINES