Affiliation:
1. Department of Mechanical Engineering, Oregon State University, Corvallis, OR 97331
Abstract
The traditional line reversal method for measuring flame temperatures has been modified to eliminate balancing of the background radiation source and facilitate real-time measurement. Two closely spaced emission lines of a Group IA element are simultaneously monitored and compared to the emission of a known source. The new technique uses optical filtering to reduce the apparent temperature of the source at the wavelength corresponding to one of the transitions. The ratio of the absorption/emission intensities of the two lines is directly related to the flame temperature. Flames as hot as 2800 K can readily be probed using the new technique. Experimental data for cool flat flames compare well with thermocouple measurements.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
3 articles.
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1. Advances in temperature measurement;Advances in Heat Transfer;2003
2. Heat transfer — a review of 1992 literature;International Journal of Heat and Mass Transfer;1994-06
3. Electrical Discharges Through Seeded Planar Diffusion Flames;Combustion Science and Technology;1993-06