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RESEARCH PAPERS: Gas Turbines: Controls and Diagnostics

A Scanning Radiation Thermometry Technique for Determining Temperature Distribution in Gas Turbines

[+] Author and Article Information
M. De Lucia, G. Masotti

Department of Energy Engineering, Università di Firenze, Florence, Italy

J. Eng. Gas Turbines Power 117(2), 341-346 (Apr 01, 1995) (6 pages) doi:10.1115/1.2814100 History: Received February 04, 1994; Online November 19, 2007

Abstract

A scanning radiation thermometry technique for determining temperature distributions in gas turbines is presented. The system, an enhancement of an earlier work, can be used by operators even without special training, since the temperature distribution is measured and corrected in terms of the error due to the reflected radiation only on the basis of the turbine’s known geometry and the physical properties of the materials. In the proposed model, the surface-exitent radiances are directly acquired via 360-deg scans. Experimental testing was performed on a static turbine-blading model. Since the angle factors emerged as a notable influence on the accuracy of the model, two angle factor calculation methods, selected for suitability from a literature survey, are exhaustively investigated, and their selection criteria defined.

Copyright © 1995 by The American Society of Mechanical Engineers
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