Development and Evaluation of a High-Resolution Turbine Pyrometer System

[+] Author and Article Information
Torsten Eggert, Bjoern Schenk, Helmut Pucher

Technical University Berlin, Institute of Combustion Engines, 10587 Berlin, Germany

J. Turbomach 124(3), 439-444 (Jul 10, 2002) (6 pages) doi:10.1115/1.1452245 History: Received January 24, 2001; Online July 10, 2002
Copyright © 2002 by ASME
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Schenk, B., and Raake, D., 1995, “Fast Response Turbine Pyrometry for High Temperature Gas Turbine Applications—Present State of Technology and Future Demand,” Proc. Int. Symp. “Local Strain and Temperature Measurements in Non-Uniform Fields at Elevated Temperatures,” High Temperature Mechanical Testing Committee, Berlin, Germany.
Eggert, T., 2000, “Turbine Pyrometry with High Spatial and Temporal Resolution,” (in German), Ph.D. dissertation, Technical University Berlin (1999), Wissenschaft & Technik Verlag, Berlin, Germany.
De Lucia, M., and Lanfranchi, C., 1992, “An Infrared Pyrometry System for Monitoring Gas Turbine Blades: Development of a Computer Model and Experimental Results,” ASME-Paper No. 92-GT-80.
De Lucia, M., and Masotti, G., 1994, “A Scanning Radiation Thermometry Technique for Determining Temperature Distribution in Gas Turbines,” ASME-Paper No. 94-GT-39.
Frank, S. F. L., Holt, T. O., Eisenlohr, H., and Raake, D., 2001, “Application of a High Resolution Turbine Pyrometer to Heavy Duty Gas Turbines,” presented at 46th ASME Turbo Expo, New Orleans, LA, June 4–7.
Koschel, W., Salden, D., and Hoch, T., 1986, “Turbine Rotor Blade Measurements Using Infrared Pyrometry,” AGARD-CP 399, Philadelphia, PA.
Beynon, T. G. R., 1981, “Turbine Pyrometry—An Equipment Manufacturer’s View,” ASME-Paper No. 81-GT-136.
Kirby, P. J., 1989, “Some Considerations Relating to Aero Engine Pyrometers,” AGARD-CP 399.
Schenk, B., Eggert, T., and Pucher, H., 1998, “A Unique Small Gas Turbine Test Facility for Low-Cost Investigations of Ceramic Rotor Materials and Thermal Barrier Coatings,” ASME-Paper No. 98-GT-554.


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Temperature measurement error due to unknown target emissivity
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Temperature measurement error due to environmental irradiation (TM=1000°C, ε=0.9)
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Mirror viewing access (indirect viewing method)
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Cooling scheme and optical probe head design
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Modular and flexible design of optical system
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Probe of the prototype pyrometer system
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Si-APD with temperature sensor and Peltier-cooler. 1: Temperature sensor, 2: detector element, 3: Peltier cooler.
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Schematic of signal processing system
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Temperature resolution of silicon-based detectors operating with a transimpedance amplifier
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Comparison of two different digital signal averaging methods
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Application of new pyrometer system to small gas turbine test bed
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Radial turbine rotor temperature distribution measured by two different pyrometer systems at 100,000 rpm and 900°C turbine inlet temperature
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Temperature distribution of axial turbine blades measured by two different pyrometer systems



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