Turbine engine with exhaust gas recirculation

Details Turbine engine with exhaust gas recirculation Turbine engine with exhaust gas recirculation

1979-04-05

1981-06-09

Garrett, Robert E.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 3952, F02C 708

Patent

active

042716640

ABSTRACT:
A method and apparatus for improving the efficiency of an integrated combined cycle Brayton-Rankine engine is disclosed. The engine has a main power turbine operating on an open-loop Brayton cycle. Its air supply is furnished by a compressor independently driven by the turbine of a closed-loop Rankine cycle which derives heat energy from the exhaust of the Brayton turbine. A portion of the exhaust gas is recirculated into the compressor inlet during part-load operation. The recirculation of exhaust gas improves the efficiency of the engine at part-load over that which would occur with only ambient temperature air entering the compressor. Also, the controlled application of exhaust gas recirculation improves the dynamic response of the engine to demands for changes in power output and is predicted to reduce the emission of polluting nitros oxides from the engine combustor.

REFERENCES:
patent: 2911789 (1959-11-01), Baker
patent: 3150487 (1964-09-01), Mangan et al.
patent: 3703807 (1972-11-01), Rice
patent: 3785145 (1974-01-01), Amann

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