Patent ID: 6530224
Filing Date: 2003-03-11
Classification: F01K,F02C,Y02E

Abstract:
An inlet pressurization system for augmenting power produced by a gas turbine system of the type including a compressor for compressing air to produce compressed air, a combustor for heating said compressed air and producing hot gases, and a turbine for receiving said hot gases and converting the energy thereof to work for driving said compressor, for supplying a load, and for producing hot exhaust gases, said system comprising:a working fluid supply; a heat exchanger for receiving hot exhaust gases from said gas turbine for at least one of evaporating and superheating working fluid from said fluid supply to produce superheated working fluid; a supercharging fan operatively coupled to said compressor for augmenting air supply to said compressor; and an apparatus for converting energy of said superheated working fluid to shaft power for driving said supercharging fan; wherein said supercharging fan is a variable speed supercharging fan, and wherein the apparatus for driving the fan ramps the supercharging fan speed to a target fan speed determined as a function of at least one of gas turbine system power output and gas turbine shaft speed demand.