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TECHNICAL PAPERS: Gas Turbines: Controls, Diagnostics, and Instrumentation

Temperature Measurements in a Heavy Duty Gas Turbine Using Radiation Thermometry Technique: Error Evaluation

[+] Author and Article Information
M. De Lucia, R. De Sabato

Dipartimento di Energetica, Università degli Studi di Firenze, Florence, Italy

P. Nava, S. Cioncolini

Nuovo Pignone General Electric, Florence, Italy

J. Eng. Gas Turbines Power 123(2), 333-339 (Aug 01, 2000) (7 pages) doi:10.1115/1.1341205 History: Received March 01, 1999; Revised August 01, 2000
Copyright © 2001 by ASME
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References

Beynon, T. G. R., 1981, “Turbine Pyrometry-An Equipment Manufacturer’s Viewpoint,” ASME Paper 81-GT-136.
Beynon, T. G. R., 1982, “Infrared Radiation Thermometry Applied to the Development and Control of Gas Turbine Engines,” Proceedings, International Conference on Infrared Technology, Butterworth Scientific, Ltd., Sevenoaks, U.K., pp. 3–16.
DeWitt, P. D., and Incropera, F. P., 1988, “Physics of Thermal Radiation,” Theory and Practice of Radiation Thermometry, edited by P. D. DeWitt and G. Nutter, Wiley, New York, NY, pp. 21–89.
Douglas, J., 1980, “High-Speed Turbine Pyrometry in Extreme Environments,” Proceedings, New Orleans Gas Turbine Conference, ASME, New York, NY, pp. 335–343.
Kirby, P. J., Zachary, R. E., and Ruiz, F., 1986, “Infrared Thermometry for Control and Monitoring of Industrial Gas Turbines,” Proceedings, International Gas Turbine Conference and Exhibit, Duesseldorf, Germany, ASME Paper 86-GT-267.
Schulemberg, T., and Bals, H., 1987, “Blade Temperature Measurements of Model V84.2 100 MW/60 Hz Gas Turbine,” Proceedings, International Gas Turbine Conference and Exhibit, Anaheim, CA, ASME Paper 87-GT-135.
Scotto,  M. J., and Eismeier,  M. E., 1980, “High-Speed Noncontacting Instrumentation for Jet Engine Testing,” ASME J. Eng. Power, 102, pp. 912–917.
De Lucia, M., and Lanfranchi, C., 1992, “An Infrared Pyrometry System for Monitoring Gas Turbine Blades: Development of a Computer Model and Experimental Results,” 1992, IGTI-92, Paper No. 92-GT-80. ASME, Journal of Engineering for Gas Turbines and Power, January 1994, Vol. 116, pp. 172–177.
DeLucia, M., and Masotti, G., 1994, “A Multimeasurement Infrared Pyrometry System for Determining Temperature Distribution in Gas Turbines,” IGTI 94, Paper No. 94-GT-39, ASME, Journal of Engineering for Gas Turbines and Power, April 1995, Vol. 117, pp. 341–346.
Love, T. J., 1988, “Environmental Effects on Radiation Thermometry,” Theory and Practice of Radiation Thermometry, edited by P. D. DeWitt and G. Nutter, Wiley, New York, NY, pp. 189–229.
Ono, A., 1988, “Methods for Reducing Emissivity Effects,” Theory and Practice of Radiation Thermometry, edited by P. D. DeWitt and G. Nutter, Wiley, New York, NY, pp. 565–623.

Figures

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Signal reduction due to inclination
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Comparation between views without and with mirrors
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Temperature measurement at 2.5 MHz (2MW-GT)
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Temperature measurement at 0.1 MHz (2MW-GT)
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Apparent emissivity band (rotor blade)
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Apparent emissivity (rotor blade)
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Apparent emissivity for fictitious GT
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Scanning blade measurement (along blade height)
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Influence of spot shape
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Signal reduction for circular spot varying BW
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Signal reduction for circular spot varying LR
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Modified trapezoidal model
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2MW GT temperature measurement
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Temperature error (Tmeas–Tcorr)
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Temperature correction vs Tmeas
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Percentage error rate at 2.5 MHz
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Percentage error rate at 0.1 MHz

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