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Research Papers: Air Emissions From Fossil Fuel Combustion

Time-Resolved Two-Dimensional Temperature Measurement From Acetylene-Oxygen Flame Using Chemical Seeding Spectrocamera

[+] Author and Article Information
Hiroyuki Oyama

Production Technology Team,
Methane Hydrate Research Center,
National Institute of Advanced Industrial Science and Technology (AIST),
2–17–2–1 Tsukisamu–Higashi,
Toyohiraku, Sapporo 062–8517, Japan
e-mail: h.oyama@aist.go.jp

Joe Kayahana

Hokkaido University,
Kita 13, Nishi 8, Kita–ku,
Sapporo 060–8628, Japan
e-mail: qqad76m9k@alpha.ocn.ne.jp

Shigeo Yatsu

Hokkaido University,
Kita 13, Nishi 8, Kita–ku,
Sapporo 060–8628, Japan
e-mail: sy@eng.hokudai.ac.jp

Kuniyuki Kitagawa

EcoTopia Science Institute Nagoya University,
Furo–Cho, Chikusa–ku,
Nagoya 464–8603, Japan
e-mail: kuni@esi.nagoya-u.ac.jp

Ashwani K. Gupta

The Combustion Laboratory,
Department of Mechanical Engineering,
University of Maryland,
College Park, MD 20742
e-mail: akgupta@umd.edu

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received March 29, 2013; final manuscript received June 6, 2013; published online August 19, 2013. Editor: Hameed Metghalchi.

J. Energy Resour. Technol 136(1), 011101 (Aug 19, 2013) (7 pages) Paper No: JERT-13-1099; doi: 10.1115/1.4024916 History: Received March 29, 2013; Revised June 06, 2013

Precise knowledge on temperature and its fluctuation in combustion systems are among the important energy issues in almost all industrial sectors, energy conversion and power fields. In this study, a spectroscopic technique is used to measure the time-resolved temperature distribution by a comparatively simple optical system that involved two band-pass filters (BPF), and a charge-coupled device with image intensifier (ICCD) video camera. The system was assembled and applied to an acetylene-oxygen premixed flame that are widely used for welding purposes because of very high temperature in such flames. The temperature distribution and its fluctuation directly impact the quality of soldering. The results provided direct visualization of temperature and its fluctuation in the flames that are conjectured to emanate from thermal and hydrodynamic phenomena from chemical reactions in the flame and interaction with surrounding air.

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Figures

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Fig. 1

A schematic diagram of the burner and diagnostic system

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Fig. 2

Schematic diagram of the process used for image data processing

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Fig. 3

Characteristic observed images: (i) test pattern image, (ii) standard tungsten lamp image, (iii) fluorescent light image, (iv) ICCD video dark current image, (v) Cr triplet image, and (vi) background of flame, respectively. All image sizes were 640 × 480 pixels.

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Fig. 4

Time-averaged chromium triplet light image: upper side Cr1, lower side Cr2. Flame flow from right to left.

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Fig. 5

Time-averaged temperature distribution in the 640 × 150 ROI

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Fig. 6

Spectrum of the chromium triplet at the shorter wavelength (Cr1)

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Fig. 7

Spectrum of the chromium triplet at the longer wavelength (Cr2)

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Fig. 8

Excitation temperature (Kelvin) in the measurement section

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Fig. 9

Time-resolved image set, taken at a rate of 30 frames/s. (a) 0 s, (b) 0.33 s, (c) 0.66 s, (d) 0.99 s, (e) 1.32 s, and (f) 1.65 s, respectively. Upper and lower sides of these images show Cr1 and Cr2 triplet lights in all the images.

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Fig. 10

Time-resolved temperature distribution. The measurement time correspond to Fig. 9: (a) 0 s, (b) 0.33 s, (c) 0.66 s, (d) 0.99 s, (e) 1.32 s, and (f) 1.65 s, respectively. The ROI image is the same as in Fig. 8.

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