Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation

Acoustic pyrometry is an interesting technique that may find several useful applications in turbomachinery. It is well known that the speed of sound in a medium is directly related to its temperature. Acoustic pyrometry estimates the temperature of a gas by considering the time of flight of an acous...

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Autores principales:	Caposciutti Gianluca, Ferrari Lorenzo
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/fccbd2f6cc34484588cc98ca6e1cfac4
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id	oai:doaj.org-article:fccbd2f6cc34484588cc98ca6e1cfac4
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spelling	oai:doaj.org-article:fccbd2f6cc34484588cc98ca6e1cfac42021-11-08T15:18:51ZMeasurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation2267-124210.1051/e3sconf/202131211011https://doaj.org/article/fccbd2f6cc34484588cc98ca6e1cfac42021-01-01T00:00:00Zhttps://www.e3s-conferences.org/articles/e3sconf/pdf/2021/88/e3sconf_ati2021_11011.pdfhttps://doaj.org/toc/2267-1242Acoustic pyrometry is an interesting technique that may find several useful applications in turbomachinery. It is well known that the speed of sound in a medium is directly related to its temperature. Acoustic pyrometry estimates the temperature of a gas by considering the time of flight of an acoustic wave moving through it. If one acoustic emitter-receiver couple is used, only the average temperature along the acoustic path can be determined. If multiple emitter-receiver couples laying on the same plane are used, a reconstruction of the temperature map in the section is possible. In this last case, the analysis is based on the fact that the temperature of each sub portion of the section affects the time of flight of all the acoustic paths travelling across it. Many parameters affect the accuracy of the measurement. They are mainly related to the physic of the sound propagation in a medium, the accuracy of the instrumentation used, the interaction between the acoustic wave and the flow velocity and the hardware set-up. In this study, the impact of the measurement set up of an acoustic pyrometry for the measurement of the exhaust gas temperature in a gas turbine was investigated to determine the optimal solution in terms of accuracy and robustness to uncertainties.Caposciutti GianlucaFerrari LorenzoEDP SciencesarticleEnvironmental sciencesGE1-350ENFRE3S Web of Conferences, Vol 312, p 11011 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Environmental sciences GE1-350
spellingShingle	Environmental sciences GE1-350 Caposciutti Gianluca Ferrari Lorenzo Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation
description	Acoustic pyrometry is an interesting technique that may find several useful applications in turbomachinery. It is well known that the speed of sound in a medium is directly related to its temperature. Acoustic pyrometry estimates the temperature of a gas by considering the time of flight of an acoustic wave moving through it. If one acoustic emitter-receiver couple is used, only the average temperature along the acoustic path can be determined. If multiple emitter-receiver couples laying on the same plane are used, a reconstruction of the temperature map in the section is possible. In this last case, the analysis is based on the fact that the temperature of each sub portion of the section affects the time of flight of all the acoustic paths travelling across it. Many parameters affect the accuracy of the measurement. They are mainly related to the physic of the sound propagation in a medium, the accuracy of the instrumentation used, the interaction between the acoustic wave and the flow velocity and the hardware set-up. In this study, the impact of the measurement set up of an acoustic pyrometry for the measurement of the exhaust gas temperature in a gas turbine was investigated to determine the optimal solution in terms of accuracy and robustness to uncertainties.
format	article
author	Caposciutti Gianluca Ferrari Lorenzo
author_facet	Caposciutti Gianluca Ferrari Lorenzo
author_sort	Caposciutti Gianluca
title	Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation
title_short	Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation
title_full	Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation
title_fullStr	Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation
title_full_unstemmed	Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation
title_sort	measurement of gt exhaust gas temperature by acoustic pyrometry: preliminary error investigation
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/fccbd2f6cc34484588cc98ca6e1cfac4
work_keys_str_mv	AT caposciuttigianluca measurementofgtexhaustgastemperaturebyacousticpyrometrypreliminaryerrorinvestigation AT ferrarilorenzo measurementofgtexhaustgastemperaturebyacousticpyrometrypreliminaryerrorinvestigation
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Measurement of GT exhaust gas temperature by acoustic pyrometry: Preliminary error investigation

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