Power plants – Combustion products used as motive fluid – Combustion products generator
Patent
1995-10-23
1997-03-18
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Combustion products generator
415115, F02C 718
Patent
active
056111975
ABSTRACT:
A gas turbine engine includes a compressor, combustor, and turbine, and a cooling air closed-circuit having an extraction line from the compressor to a hot turbine component such as vanes, blades, or shrouds, and a return line to the compressor. The extraction line may be joined to any suitable compressor stage for extracting air at a suitable pressure for flow to the turbine, with the return line being joined to any suitable injection stage of the compressor having a lower pressure than the extraction stage for driving the cooling air through the closed-circuit. The compressor itself therefore drives the closed-circuit and is self regulated.
REFERENCES:
patent: 2618120 (1952-11-01), Papini
patent: 3751909 (1973-08-01), Kohler
patent: 5134844 (1992-08-01), Lee et al.
"Effects of Closed-Circuit Gas Turbine Cooling Systems on Combined Cycle Performance", by Ikeguchi et al., ASME 94-JPGC-GT-8, Oct. 2-Jun. 1994, pp. 1-7.
"A Combined Cycle Design to Achieve Greater than 60 percent Efficiency", by Briesch et al., IGTI-vol. 9, ASME Cogen-Turbo, Aug. 1994, pp. 299-308.
"Design 60% Net Efficiency in Frame 7/9H Steam-Cooled CCGT", by Farmer et al., Gas Turbine World, vol. 26, No. 3, May-Jun. 1995, pp. Cover, 1, 12-14, 16, 18, 20.
"Power Systems for the 21st Century H Gas Turbine Combined Cycles", by Corman et al., ASME/IGTI Expo 1995, Jun. 1995, pp. Cover, back, and 1-12.
Casaregola Louis J.
General Electric Company
Snyder Marvin
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