METHOD OF CONTROLLING TEMPERATURE OF GAS TURBINE COMPONENTS USING A COMPRESSED MOISURIZED COOLANT

摘要

A method and apparatus for controlling a temperature a component of a gas turbine is disclosed. A compressed gas for use as a coolant is provided. The coolant is moisturized at a moisturizeing unit. A circulating unit circulates the moisturized coolant to the component of the gas turbine to control the temperature of the component. The coolant can be air, nitrogen, and a mixture of air and nitrogen in various embodiments. The component of the turbine can be a blade of a turbine section of the gas turbine, a turbine nozzle and a combustor, for example. A combustor can combust a mixture of fuel and the moisturized compressed coolant gas to reduce a NOx emission of the gas turbine.