Appeal No. 2003-0618
Application No. 09/351,218
evaporative cooling of the air prior to compression and
intercooling of the air during compression, comprising the steps
of:
a) introducing a first stream of water droplets into the
flow of air at a first location in the duct, the first location
being sufficiently far upstream of the compressor inlet such that
at least a portion of the water droplets in the first stream of
water droplets evaporate before reaching the compressor inlet,
whereby the air flowing through the duct is cooled and humidified
prior to reaching the compressor inlet by evaporation of the
first stream of water droplets; and
b) introducing a second stream of water droplets into the
flow of cooled and humidified air prior to compression thereof at
a second location downstream from the first location, the second
location being sufficiently proximate to the compressor inlet so
that at least a major portion of the water droplets in the second
stream of water droplets do not evaporate before reaching the
compressor inlet, whereby the air being compressed in the
compressor is intercooled by evaporation of droplets from the
second stream of water droplets during compression thereof.
28. An apparatus for increasing power output in a gas
turbine, having a duct directing air to an inlet of a multistage
compressor, by both evaporative cooling of the air prior to
compressor and intercooling of the air during compression,
comprising the steps of:
a) means for introducing a first stream of water droplets
into the flow of air at a first location in the duct, the first
location being sufficiently far upstream of the compressor inlet
such that at least a portion of the water droplets in the first
stream of water droplets evaporate before reaching the compressor
inlet, whereby the air flowing through the duct is cooled and
humidified prior to reaching the compressor inlet by evaporation
of the first stream of water droplets; and
b) means for introducing a second stream of water droplets
into the flow of cooled and humidified air prior to compression
thereof at a second location downstream from the first location,
the second location being sufficiently proximate to the
compressor inlet so that at least a major portion of the water
droplets in the second stream of water droplets do not evaporate
before reaching the compressor inlet, whereby the air being
compressed in the compressor is intercooled by evaporation of
droplets from the second stream of water droplets during
compression thereof.
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