Power plants – Combustion products used as motive fluid – Process
Reexamination Certificate
2006-11-22
2008-09-30
Kim, Ted (Department: 3746)
Power plants
Combustion products used as motive fluid
Process
C060S039300
Reexamination Certificate
active
07428819
ABSTRACT:
In a method of operating a compressor of a gas turbine, where compressor air sucked in from the environment is cooled down by evaporation cooling before entering the compressor, before starting operation of the compressor, maximum possible temperature drops which could be achieved by evaporation cooling are determined dependent on different ambient conditions and/or are provided as a data set. These temperature drops are correlated with a compressor map containing maximum temperature distortions at different ambient conditions and different rotation frequencies of the compressor which have to be met in order to avoid pumping. The evaporation cooling is then only operated when current ambient condition result in a maximum possible temperature drop from which a predetermined fraction of between 50% and 100% does not exceed the maximum distortion which can be taken from the compressor map for these ambient conditions and the current rotation frequency of the compressor. Safe operation of the compressor can be achieved without the need or monitoring temperature distortions in the sucked in air stream.
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Cataldi Giovanni
Faehndrich Christian
Matz Charles
ALSTOM Technology Ltd.
Cermak Adam J.
Cermak Kenealy & Vaidya LLP
Kim Ted
LandOfFree
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