Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1975-04-02
1982-06-08
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
F02C 618
Patent
active
043333109
ABSTRACT:
A combined cycle electric power plant includes gas and steam turbines and a steam generator for recovering the heat in the exhaust gases exited from the gas turbine and for using the recovered heat to produce and supply steam to the steam turbine. The steam generator includes a superheater tube through which a fluid, e.g. water, is directed to be additionally heated into superheated steam by the exhaust gas turbine gases. An afterburner further heats the exhaust gas turbine gases passed to the superheater tube. The temperature of the gas turbine exhaust gases is sensed for varying the fuel flow to the afterburner by a fuel valve, whereby the temperatures of the gas turbine exhaust gases and therefore of the superheated steam, are controlled. The afterburner fuel flow is controlled through a feedforward setpoint signal derived as a predetermined function of sensed gas turbine exhaust temperature.
REFERENCES:
patent: 3552872 (1971-11-01), Giras et al.
patent: 3762162 (1973-10-01), Miara et al.
patent: 3866109 (1975-02-01), Reed et al.
patent: 3879616 (1975-04-01), Baker et al.
Casaregola Louis J.
Possessky E. F.
Westinghouse Electric Corp.
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