Power plants – Combustion products used as motive fluid
Patent
1996-12-23
1999-05-11
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60728, 60740, F02C7/12;7/22
Patent
active
059015489
ABSTRACT:
A gas turbine engine including air cooling and compressing means configured so that, in one embodiment, cool air from the cooling and compressing means is supplied to the combustor for cooling the combustor and then, after cooling at least a portion of the combustor, for mixing with fuel in the fuel injector, is described. In one form, the combustor includes a flowpath in flow communication with cool air supplied by the cooling and compressing means. The air flows through the flowpath from an aft portion to an outlet located at the fuel injector. The cooling air, after having cooled walls of the combustion chamber, mixes with fuel in the fuel injector. Mixing the high pressure air from the cooling and compressing means with the fuel in the fuel injector facilitates dispersion of fuel from the fuel injector into the combustion chamber, and also aids in increasing the fuel/air energy shear gradients. As a result, the injection velocity is believed to be significantly increased, and NOx emissions are believed to be reduced.
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Casaregola Louis J.
General Electric Company
Hess Andrew C.
Young Rodney M.
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