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Proceedings Paper

Optical measurement of local temperatures in a semi-industrial pulverized coal flame by infrared spectroscopy
Author(s): Jean Crabol; Bruno Potier; Olivier Mace
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Paper Abstract

The method described is based on emission-absorption of thermal radiation in the near infrared between 1 and 5 μm. Unlike conventional optical methods, it allows the determination of local temperatures rather than an average temperature integrated along aiming line of the pyrometer. The particle and gas temperature radial fields together with the relative particle concentration radial fields in a semi-industrial pulverized coal flame have been established. The distributions which have been obtained show that industrial flames are neither isothennal nor homogeneous. Particle and gas temperature profiles exhibit the same shape but particle temperatures are about 100°C higher than gas temperatures. Measurements have also been made with a suction pyrometer and the results obtained are generally found between those determined for the particules and gases respectively.

Paper Details

Date Published: 1 November 1990
PDF: 11 pages
Proc. SPIE 1341, Infrared Technology XVI, (1 November 1990); doi: 10.1117/12.23112
Show Author Affiliations
Jean Crabol, Univ. de Paris X-Nanterre (France)
Bruno Potier, Univ. de Paris X-Nanterre (France)
Olivier Mace, Univ. de Paris X-Nanterre (France)

Published in SPIE Proceedings Vol. 1341:
Infrared Technology XVI
Irving J. Spiro, Editor(s)

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