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Gas Temperature Measurement Using Differential Optical Absorption Spectroscopy (DOAS)

Gao, Qiang LU ; Weng, Wubin LU ; Li, Bo LU ; Aldén, Marcus LU and Li, Zhongshan LU (2018) In Applied Spectroscopy 72(7). p.1014-1020
Abstract

A nonintrusive method for flow gas temperature measurement using differential optical absorption spectroscopy (DOAS) was demonstrated. A temperature-dependent spectra (TDS) originated from the DOAS spectra of sulfur dioxide (SO2) in the wavelength range of 276–310 nm was introduced, and the relationship between the TDS and the temperature was built through experimental calibration process. This relationship is found to be independent of SO2 concentration and can be used for temperature measurements. The experimental results indicated that the precision of the TDS method is < ± 0.3% for SO2 concentrations higher than 150 ppm with the optical path length of 170 mm. For lower concentrations, the... (More)

A nonintrusive method for flow gas temperature measurement using differential optical absorption spectroscopy (DOAS) was demonstrated. A temperature-dependent spectra (TDS) originated from the DOAS spectra of sulfur dioxide (SO2) in the wavelength range of 276–310 nm was introduced, and the relationship between the TDS and the temperature was built through experimental calibration process. This relationship is found to be independent of SO2 concentration and can be used for temperature measurements. The experimental results indicated that the precision of the TDS method is < ± 0.3% for SO2 concentrations higher than 150 ppm with the optical path length of 170 mm. For lower concentrations, the precision is estimated to be ± 0.4% at 1 ppm. The relative deviation between the temperature measured by the TDS method and that measured by a thermocouple is within 3% in the temperature range of 298–750 K, and the TDS method has a quicker response to the fast-changing temperature than the thermocouple.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
absorption spectroscopy, differential optical absorption spectroscopy, DOAS, Sulfur dioxide, temperature measurement
in
Applied Spectroscopy
volume
72
issue
7
pages
1014 - 1020
publisher
Society for Applied Spectroscopy
external identifiers
  • scopus:85049053460
  • pmid:29911413
ISSN
0003-7028
DOI
10.1177/0003702818760864
language
English
LU publication?
yes
id
8d015988-7256-453b-84eb-848d8c3553cf
date added to LUP
2018-07-06 13:48:54
date last changed
2024-12-24 11:28:49
@article{8d015988-7256-453b-84eb-848d8c3553cf,
  abstract     = {{<p>A nonintrusive method for flow gas temperature measurement using differential optical absorption spectroscopy (DOAS) was demonstrated. A temperature-dependent spectra (TDS) originated from the DOAS spectra of sulfur dioxide (SO<sub>2</sub>) in the wavelength range of 276–310 nm was introduced, and the relationship between the TDS and the temperature was built through experimental calibration process. This relationship is found to be independent of SO<sub>2</sub> concentration and can be used for temperature measurements. The experimental results indicated that the precision of the TDS method is &lt; ± 0.3% for SO<sub>2</sub> concentrations higher than 150 ppm with the optical path length of 170 mm. For lower concentrations, the precision is estimated to be ± 0.4% at 1 ppm. The relative deviation between the temperature measured by the TDS method and that measured by a thermocouple is within 3% in the temperature range of 298–750 K, and the TDS method has a quicker response to the fast-changing temperature than the thermocouple.</p>}},
  author       = {{Gao, Qiang and Weng, Wubin and Li, Bo and Aldén, Marcus and Li, Zhongshan}},
  issn         = {{0003-7028}},
  keywords     = {{absorption spectroscopy; differential optical absorption spectroscopy; DOAS; Sulfur dioxide; temperature measurement}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{7}},
  pages        = {{1014--1020}},
  publisher    = {{Society for Applied Spectroscopy}},
  series       = {{Applied Spectroscopy}},
  title        = {{Gas Temperature Measurement Using Differential Optical Absorption Spectroscopy (DOAS)}},
  url          = {{http://dx.doi.org/10.1177/0003702818760864}},
  doi          = {{10.1177/0003702818760864}},
  volume       = {{72}},
  year         = {{2018}},
}