Patent ID: 8056344
Filing Date: 2011-11-15
Classification: F02C,F05D,F23C,F23N,F23R

Abstract:
1. A method for operating a gas turbine engine having a compressor joined to a turbine by a core rotor, with at least one combustor disposed therebetween for receiving compressed air from said compressor and fuel for providing combustion gas discharged to said turbine, said method comprising: supplying a hydrocarbon fuel to the combustor; and injecting hydrogen into said combustor in response to a power output level of said gas turbine engine; wherein, said gas turbine is operable at least in a high-power condition, a mid-power condition, and a low-power condition; said method further comprises, i) supplying said hydrocarbon fuel to said combustor during said high-power, mid-power and low-power conditions; ii) starting an injection of hydrogen into said combustor when changing from one of said high-power and the mid-power conditions to said low-power condition; and iii) stopping said hydrogen injection when changing from said low-power condition to one of said high-power and mid-power conditions;