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Fiber-coupled phosphor thermometry for wall temperature measurements in a full-scale hydrogen gas turbine combustor

Nau, Patrick ; Müller, Andre ; Petry, Niklas ; Nilsson, Sebastian LU ; Endres, Torsten ; Richter, Mattias LU and Witzel, Benjamin (2023) In Measurement Science and Technology 34(10).
Abstract

Online wall temperatures were measured with fiber-coupled phosphor thermometry in a full-scale gas turbine combustor. The combustor was operated with natural gas and up to 100 vol% hydrogen at engine-relevant conditions. Two phosphors were tested for this application, namely YAG:Dy and YAG:Tm;Li. Although YAG:Tm;Li seemed to be the most promising phosphor for this application, it turned out to be incompatible with the used setup due to a strong interfering signal generated by the laser in the used fiber setup. A strategy to compensate for interferences from flame emissions during natural gas operation was developed. With this strategy it was possible to obtain single-shot temperature measurements at 15 Hz and a precision of 2-7 K for a... (More)

Online wall temperatures were measured with fiber-coupled phosphor thermometry in a full-scale gas turbine combustor. The combustor was operated with natural gas and up to 100 vol% hydrogen at engine-relevant conditions. Two phosphors were tested for this application, namely YAG:Dy and YAG:Tm;Li. Although YAG:Tm;Li seemed to be the most promising phosphor for this application, it turned out to be incompatible with the used setup due to a strong interfering signal generated by the laser in the used fiber setup. A strategy to compensate for interferences from flame emissions during natural gas operation was developed. With this strategy it was possible to obtain single-shot temperature measurements at 15 Hz and a precision of 2-7 K for a 1 s average.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
gas turbine, hydrogen combustion, phosphor thermometry, wall temperature
in
Measurement Science and Technology
volume
34
issue
10
article number
104003
publisher
IOP Publishing
external identifiers
  • scopus:85165717677
ISSN
0957-0233
DOI
10.1088/1361-6501/ace542
language
English
LU publication?
yes
id
bc32365d-dfaf-4e37-b210-2783f19880d0
date added to LUP
2023-09-20 10:46:50
date last changed
2023-11-07 10:38:48
@article{bc32365d-dfaf-4e37-b210-2783f19880d0,
  abstract     = {{<p>Online wall temperatures were measured with fiber-coupled phosphor thermometry in a full-scale gas turbine combustor. The combustor was operated with natural gas and up to 100 vol% hydrogen at engine-relevant conditions. Two phosphors were tested for this application, namely YAG:Dy and YAG:Tm;Li. Although YAG:Tm;Li seemed to be the most promising phosphor for this application, it turned out to be incompatible with the used setup due to a strong interfering signal generated by the laser in the used fiber setup. A strategy to compensate for interferences from flame emissions during natural gas operation was developed. With this strategy it was possible to obtain single-shot temperature measurements at 15 Hz and a precision of 2-7 K for a 1 s average.</p>}},
  author       = {{Nau, Patrick and Müller, Andre and Petry, Niklas and Nilsson, Sebastian and Endres, Torsten and Richter, Mattias and Witzel, Benjamin}},
  issn         = {{0957-0233}},
  keywords     = {{gas turbine; hydrogen combustion; phosphor thermometry; wall temperature}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{IOP Publishing}},
  series       = {{Measurement Science and Technology}},
  title        = {{Fiber-coupled phosphor thermometry for wall temperature measurements in a full-scale hydrogen gas turbine combustor}},
  url          = {{http://dx.doi.org/10.1088/1361-6501/ace542}},
  doi          = {{10.1088/1361-6501/ace542}},
  volume       = {{34}},
  year         = {{2023}},
}