Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1993-09-10
1994-05-24
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
60 39182, 60728, F02C 618
Patent
active
053137825
ABSTRACT:
In a combined gas/steam power station plant which consists essentially of a fossil-fired gas turbine group and a steam circuit, with an exhaust heat boiler (11) in between, intercooling and reheat are provided to maximize the efficiency. The gas turbine group consists of two compressors (1, 2), of two combustion chambers (7, 9) and of two turbines (8, 10). Downstream of the first compressor (1), there is an intercooler (3) and on the cool side of this is placed an evaporator (4) which is in effective connection with the intercooler. The steam quantity formed in the evaporator (4) is introduced into a turbine (6) of the steam circuit, the result of this being a first improvement in efficiency. Downstream of the first turbine (8), there is a second combustion chamber (9) in which the exhaust gases from the first turbine (8) are processed to produce hot gases for the second turbine (10) . The large calorific potential still present in the exhaust gases from this second turbine (10) flows through the exhaust heat boiler (11) in which a maximized steam power is produced, the result of which is the second improvement in efficiency.
REFERENCES:
patent: 3289402 (1966-12-01), Jung et al.
patent: 4550562 (1985-11-01), Rice
patent: 4893466 (1990-01-01), Egnell et al.
patent: 4896499 (1990-01-01), Rice
Frutschi Hans U.
Hausermann Alfred
Wettstein Hans
Asea Brown Boveri Ltd.
Casaregola Louis J.
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