High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array

In this paper, the deployment of a newly developed, multipoint, fiber-optic temperature-sensor system for temperature distribution measurements in a 6 MW gas turbine is demonstrated. The optical sensor fiber was integrated in a stainless steel protection cable with a 1.6 mm outside diameter. It incl...

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Main Authors: Franz J. Dutz, Sven Boje, Ulrich Orth, Alexander W. Koch, Johannes Roths
Format: Article
Language:English
Published: MDPI AG 2020-09-01
Series:International Journal of Turbomachinery, Propulsion and Power
Subjects:
Online Access:https://www.mdpi.com/2504-186X/5/4/25
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author Franz J. Dutz
Sven Boje
Ulrich Orth
Alexander W. Koch
Johannes Roths
author_facet Franz J. Dutz
Sven Boje
Ulrich Orth
Alexander W. Koch
Johannes Roths
author_sort Franz J. Dutz
collection DOAJ
description In this paper, the deployment of a newly developed, multipoint, fiber-optic temperature-sensor system for temperature distribution measurements in a 6 MW gas turbine is demonstrated. The optical sensor fiber was integrated in a stainless steel protection cable with a 1.6 mm outside diameter. It included six measurement points, distributed over a length of 110 mm. The sensor cable was mounted in a temperature probe and was positioned radially in the exhaust-gas diffusor of the turbine. With this temperature probe, the radial temperature profiles in the exhaust-gas diffusor were measured with high spatial and temporal resolution. During a test run of the turbine, characteristic temperature gradients were observed when the machine operated at different loads.
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spelling doaj.art-a2f4199261ca43a58c38f7afe6c16dcc2023-11-20T14:53:33ZengMDPI AGInternational Journal of Turbomachinery, Propulsion and Power2504-186X2020-09-01542510.3390/ijtpp5040025High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor ArrayFranz J. Dutz0Sven Boje1Ulrich Orth2Alexander W. Koch3Johannes Roths4Photonics Laboratory, Munich University of Applied Sciences, Lothstrasse 34, 80335 Munich, GermanyMAN Energy Solutions SE, Steinbrinkstrasse 1, 46145 Oberhausen, GermanyMAN Energy Solutions SE, Steinbrinkstrasse 1, 46145 Oberhausen, GermanyInstitute for Measurement Systems and Sensor Technology, Technical University of Munich, Theresienstrasse 90, 80333 Munich, GermanyPhotonics Laboratory, Munich University of Applied Sciences, Lothstrasse 34, 80335 Munich, GermanyIn this paper, the deployment of a newly developed, multipoint, fiber-optic temperature-sensor system for temperature distribution measurements in a 6 MW gas turbine is demonstrated. The optical sensor fiber was integrated in a stainless steel protection cable with a 1.6 mm outside diameter. It included six measurement points, distributed over a length of 110 mm. The sensor cable was mounted in a temperature probe and was positioned radially in the exhaust-gas diffusor of the turbine. With this temperature probe, the radial temperature profiles in the exhaust-gas diffusor were measured with high spatial and temporal resolution. During a test run of the turbine, characteristic temperature gradients were observed when the machine operated at different loads.https://www.mdpi.com/2504-186X/5/4/25fiber Bragg gratingmultipointhigh temperatureregenerated gratinggas turbine
spellingShingle Franz J. Dutz
Sven Boje
Ulrich Orth
Alexander W. Koch
Johannes Roths
High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array
International Journal of Turbomachinery, Propulsion and Power
fiber Bragg grating
multipoint
high temperature
regenerated grating
gas turbine
title High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array
title_full High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array
title_fullStr High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array
title_full_unstemmed High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array
title_short High-Temperature Profile Monitoring in Gas Turbine Exhaust-Gas Diffusors with Six-Point Fiber-Optic Sensor Array
title_sort high temperature profile monitoring in gas turbine exhaust gas diffusors with six point fiber optic sensor array
topic fiber Bragg grating
multipoint
high temperature
regenerated grating
gas turbine
url https://www.mdpi.com/2504-186X/5/4/25
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