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Infrared-optical characterization of emitting and absorbing gases at high temperatures and high pressures

  • In the context of the optimization of stationary gas turbines, the surface temperatures of the turbine blades have to be measured by a non-contact technique using radiation thermometers during operation of the turbine. Nowadays turbine blades are protected by thermal barrier coatings. The infrared-optical properties of these coatings require the usage of the MIR or LWIR region for non-contact measurement of the surface temperatures. For performing such measurements and for properly analyzing the derived data, the transmission and absorption spectra of the combustion gas mixture within the turbine were determined at the local conditions during operation of the turbine. Therefore, subject of this work is the measurement of the transmission spectra of carbon dioxide and water vapor at high temperatures and high pressures to identify a wavelength range, which is almost free of absorption and emission effects. In …

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Metadaten
Author:Jürgen Hartmann, Matthias Zipf, Jochen Manara, Thomas Stark, Mariacarla Arduini, Hans-Peter Ebert
Parent Title (English):High Temperatures – High Pressures
Document Type:Article
Language:English
Year of publication:2018
Publishing Institution:Hochschule für Angewandte Wissenschaften Würzburg-Schweinfurt
Release Date:2020/12/04
Volume:47
Issue:1
First Page:3
Last Page:21
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 621 Angewandte Physik
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