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6. Project Activity Summary 6a. C200 Cycle Study / Conceptual Design Goals per DOE solicitation: • Efficiency: ≥ 40% • Cost: ≤ 500 $/kW • Emissions: ≤ 7ppm NOx • Multiple fuels • Life: 11,000 hours to overhaul 45,000 hour service life • Cost effective, clean distributed generation that would be commercially available Cycle Analysis: • Evaluated output as a function primary variables Pressure ratio, recuperator size, power level • Pressure ratio of 4.2 chosen (4.1 to 4.5 acceptable) Optimal efficiency for a given power Increased turbine efficiency Reasonable compressor development Low pressure preferred for bearings and rotordynamics • Evaluated the impact for a variety of losses Bearing cooling Turbine tip speed Generator efficiency • Critical limitation is recuperator inlet temperature • Evaluate Two Platform (Size) Configurations • For a given platform maintain rotordynamic configuration Generator, compressor, bearing lay-out High efficiency turbine will be different • Evaluate platform operation at 3 operating points (TET) De-rate (1085oF,585oC) Metallic Development (1185oF,641oC) High Efficiency (1600oF,871oC) Cycle model Approach: • Create cycle model • Create cycle component models Compressor, Radial Turbine, Axial Turbine, Recuperator • Create Cost model • Parametric studies on power output, pressure ratio and recuperator size • Selection Criteria Maximum TIT: Production -> 1750F ; High Efficiency -> 2200F Maximum TET: Production -> 1185F ; High Efficiency -> 1500F Recuperator Outer Diameter - 30in 5PDF Image | Final Technical Report Advanced MicroTurbine System (AMTS) -C200 MicroTurbine -Ultra-Low Emissions MicroTurbine
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