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Concurrent measurements of temperature and soot concentration of pulverised coal flames
IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188), 2002This paper presents a novel instrumentation system for the concurrent measurements of temperature and soot concentration of pulverised coal flames. The system operates on the two-colour principle combining advanced optical sensing and digital image processing techniques. The temperature of a flame is calculated from the ratio between the grey-levels of
G. Lu, H.C. Bheemul, Y. Yan
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Soot concentration and absorption coefficient in a low-pressure flame
Combustion and Flame, 1975Abstract Soot concentrations at different positions through the carbon formation zone of a premixed acetylene/oxygen flat flame at 20-mm Hg were evaluated by measuring the attenuation of a laser beam passed through the flame. The required soot absorption coefficients were measured in the same optical system by replacing the flame with standard soot ...
B.L. Wersborg, L.K. Fox, J.B. Howard
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In-cylinder Quantitative Soot Concentration Measurement By Laser-Induced Incandescence
SAE Technical Paper Series, 1999<div class="htmlview paragraph">Some methods to quantify the soot concentration by Laser-Induced Incandescence were developed using a flat flame burner in our previous work [<span class="xref">1</span>]. Those methods take the following points into consideration.
Kazuhisa Inagaki +2 more
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Temperature and soot concentration in a high soot density flame
International Journal of Heat and Mass Transfer, 1996Abstract The emissivity of a particulate flame which contains interacting soot particles of size parameters larger than Rayleigh limit and up to Penndorf extension is derived. The flame is assumed to be heavily charged with soot particles and radiation from the flame is mainly dominated by that emitted or absorbed by particles.
M.A. Al-Nimr, V.S. Arpaci, Y.S. Najjar
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SAE Technical Paper Series, 2018
<div class="section abstract"><div class="htmlview paragraph">In an optically accessible high-pressure/high-temperature (HP/HT) chamber, OH radicals, soot concentration, and OH<sup>*</sup> chemiluminescence images were captured simultaneously at a constant ambient temperature of 823 K and a gas density of 20 kg/m<sup>3</
Chengjun Du, Mats Andersson
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<div class="section abstract"><div class="htmlview paragraph">In an optically accessible high-pressure/high-temperature (HP/HT) chamber, OH radicals, soot concentration, and OH<sup>*</sup> chemiluminescence images were captured simultaneously at a constant ambient temperature of 823 K and a gas density of 20 kg/m<sup>3</
Chengjun Du, Mats Andersson
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Lasers, Sources and Related Photonic Devices, 2010
Two-dimensional laser-induced incandescence has been used to quantify soot properties in strongly sooting turbulent nonpremixed flames fueled by ethylene and JP-8 surrogate, despite strong laser attenuation and signal trapping.
Christopher R. Shaddix +2 more
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Two-dimensional laser-induced incandescence has been used to quantify soot properties in strongly sooting turbulent nonpremixed flames fueled by ethylene and JP-8 surrogate, despite strong laser attenuation and signal trapping.
Christopher R. Shaddix +2 more
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Advanced Materials Research, 2012
The soot emission concentration of the stationary pollution sources is one of the important measurement parameters of the atmosphere pollution CEMS. The monodispersion soot position can affect the original measurement light intensity and reduce the soot concentration measurement accuracy.
Yan Jun Zhao +3 more
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The soot emission concentration of the stationary pollution sources is one of the important measurement parameters of the atmosphere pollution CEMS. The monodispersion soot position can affect the original measurement light intensity and reduce the soot concentration measurement accuracy.
Yan Jun Zhao +3 more
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Oxidation of Acetylene Soot: Influence of Oxygen Concentration
Energy & Fuels, 2007Soot was produced from acetylene pyrolysis at 1100 °C using 50 000 ppmv acetylene. At 900 and 1100 °C, the influence of the oxygen concentration in a range of 100–30 000 ppmv was analyzed.
T. Mendiara +3 more
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Concentration profiles in rich and sooting ethylene flames
Symposium (International) on Combustion, 1988Detailed temperature and species profiles in two premixed ethylene flames, one heavily sooting and the other rich but non-sooting, were studied with probes, laser fluorescence and a chemical kinetics model We found that the oxidation reactions leading to CO, H 2 O and CO 2 can be well modeled.
Stephen J. Harris +3 more
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The Effect of Oxygen Concentration on Sooting Diffusion Flames
Combustion Science and Technology, 1980Abstract In a concentric diffusion flame arrangement, sooting heights were determined as a function of the oxygen concentration in the oxidizing stream. Changing the oxygen concentration has two different and competing effects on the tendency of a fuel jet to soot. Increasing the oxygen concentration increases the stoichiometric flame temperature which
null GLASSMAN, P. YACCARINO
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