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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

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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