Patent ID: 7617686

Claim:
A method for correcting a temperature value so that it more closely approximates a mass-averaged temperature over a flow cross-section at an outlet of a turbine of a gas turbine, wherein the temperature value is a value detected by a sensor or sensors in the area of the flow cross-section at at least one position in the gas flow, the method comprising correcting the temperature value in order to compensate for non-uniformities in the temperature profile of the gas flow over the flow cross-section that cause the temperature value and the mass-averaged temperature to differ, with a correction value that is a function of a first parameter, such that the corrected value yields a value that is the mass averaged temperature at non-uniform conditions, wherein the first parameter includes at least one of: a gas mass flow flowing through the flow cross-section; a reduced gas mass flow flowing through the flow cross-section; a total absolute pressure at a compressor outlet; a static absolute pressure at the compressor outlet; a total atmospheric overpressure at the compressor outlet; a static atmospheric overpressure at the compressor outlet; and a turbine pressure ratio.