Currently, there is no satisfactory method for measuring the temperature of the gas phase of combustion products within a solid fuel flame. The industry standard, a suction pyrometer or aspirated thermocouple, is intrusive, spatially and temporally averaging, and difficult to use. In this work, a new method utilizing the spectral emission from water vapor is investigated through modeling and experimental measurements. The method employs the collection of infrared emission from water vapor over discrete wavelength bands and then uses the ratio of those emissions to infer temperature. This method was demonstrated in the products of a 150 kWth natural gas flame along a 0.75 m line of sight, averaged over 1 min. Results from this optical method were compared to those obtained using a suction pyrometer. Data were obtained at three fuel air equivalence ratios that produced products at three temperatures. The optical measurement produced gas temperatures approximately 3–4% higher than the suction pyrometer. The uncertainty of the optical measurements is dependent on the gas temperature being ±9% at 850 K and 4% or less above 1200 K. Broadband background emission assumed to be emitted from the reactor wall was also seen by the optical measurement and had to be removed before an accurate temperature could be measured. This complicated the gas measurement but also provides the means whereby both gas and solid emission can be measured simultaneously.
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July 2016
Research-Article
Temperature Measurement Using Infrared Spectral Band Emissions From H2O
Daniel J. Ellis,
Daniel J. Ellis
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: daniel.j.ellis@outlook.com
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: daniel.j.ellis@outlook.com
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Vladimir P. Solovjov,
Vladimir P. Solovjov
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: lemberg.v@gmail.com
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: lemberg.v@gmail.com
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Dale R. Tree
Dale R. Tree
Mem. ASME
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: treed@byu.edu
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: treed@byu.edu
Search for other works by this author on:
Daniel J. Ellis
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: daniel.j.ellis@outlook.com
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: daniel.j.ellis@outlook.com
Vladimir P. Solovjov
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: lemberg.v@gmail.com
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: lemberg.v@gmail.com
Dale R. Tree
Mem. ASME
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: treed@byu.edu
Department of Mechanical Engineering,
Brigham Young University,
435 CTB, Brigham Young University,
Provo, UT 84602
e-mail: treed@byu.edu
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received August 17, 2015; final manuscript received December 18, 2015; published online February 1, 2016. Assoc. Editor: Ashwani K. Gupta.
J. Energy Resour. Technol. Jul 2016, 138(4): 042001 (7 pages)
Published Online: February 1, 2016
Article history
Received:
August 17, 2015
Revised:
December 18, 2015
Citation
Ellis, D. J., Solovjov, V. P., and Tree, D. R. (February 1, 2016). "Temperature Measurement Using Infrared Spectral Band Emissions From H2O." ASME. J. Energy Resour. Technol. July 2016; 138(4): 042001. https://doi.org/10.1115/1.4032425
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