System and method for determining combustion temperature using infrared emissions
First Claim
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1. A method of determining temperature from a plurality of radiation intensity values, said method comprising the steps of:
- creating a look-up table of a plurality of simulated radiation intensity values being calculated as a function of a range of temperature values and a range of molar concentration values of gas emissions;
receiving a plurality of values of input radiation intensity signals;
selecting one of said values of input radiation signals as a background radiation signal;
subtracting said background radiation signal from the remaining said plurality of values of radiation signals to obtain corrected radiation signals; and
comparing the values of said corrected radiation intensity signals with said simulated radiation intensity values and determining a temperature value from the value of said input radiation intensity signals.
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Abstract
The present invention relates to a combustion temperature sensor, and, more particularly, to a combustion temperature sensor that measures infrared energy emitted at several preselected wavelengths from a flame and/or a flame'"'"'s hot gas at a turbine inlet location and applies the energy signals to a calculation model to yield temperature.
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Citations
14 Claims
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1. A method of determining temperature from a plurality of radiation intensity values, said method comprising the steps of:
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creating a look-up table of a plurality of simulated radiation intensity values being calculated as a function of a range of temperature values and a range of molar concentration values of gas emissions;
receiving a plurality of values of input radiation intensity signals;
selecting one of said values of input radiation signals as a background radiation signal;
subtracting said background radiation signal from the remaining said plurality of values of radiation signals to obtain corrected radiation signals; and
comparing the values of said corrected radiation intensity signals with said simulated radiation intensity values and determining a temperature value from the value of said input radiation intensity signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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