Power plants – Combustion products used as motive fluid
Patent
1996-01-17
1998-04-14
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 3915, 60 39182, F02C 618
Patent
active
057379114
ABSTRACT:
An operating method of a combined plant that has several gas turbines and exhaust heat recovery boilers which generate steam by exhaust gas from the gas turbines wherein exhaust gas from each of the heat recovery boilers is passed through exhaust gas ducts and discharged from a common chimney. The method includes operating a combined plant having plural axes which may be suitably started or stopped and having means for discharging exhaust gas from three or more gas turbines through one common chimney. When the pressure at a joining part of an exit duct of an exhaust heat recovery boiler is a positive pressure or the atmospheric temperature is higher than a preset atmospheric temperature, gas turbines can be re-started or stopped without back-flow of exhaust gas of the gas turbine.
REFERENCES:
patent: 3494126 (1970-02-01), Foster-Pegg
patent: 3500642 (1970-03-01), Foster-Pegg
Hattori Youichi
Hoizumi Shinichi
Ishimaru Hitoshi
Kusaka Satoshi
Sato Hideyuki
Casaregola Louis J.
Hitachi , Ltd.
Hitachi Engineering Co. Ltd.
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