The present work studies the ignition and extinction of a spherical solid fuel particle exposed to a quiescent, hot, oxygen-containing environment. Using particle sizes and ambient temperature and oxygen concentration as parameters, the ignition, burning, and extinction of particles were parametrically analyzed by studying the relative heat production and heat-loss rates. For a given ambient condition, the results showed that it is possible that both large and small particles might not ignite at all. When a particle burns, its size decreases with time and its combustion characteristics are altered. The extinction condition may be reached due solely to the diminishing size of the particle. The particle extinction diameter was calculated. It strongly depends on the ambient condition and the reaction rate, but not on the initial particle size.
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e-mail: Kannamalai@mengr.tamu.edu
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A Heat and Mass Transfer Analysis of the Ignition and Extinction of Solid Char Particles
T. X. Phuoc,
T. X. Phuoc
U.S. Department of Energy, Federal Energy Technology Center, P.O. Box 10904, Pittsburgh, PA 15236
e-mail: tran@fetc.doe.gov
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K. Annamalai
K. Annamalai
Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123
e-mail: Kannamalai@mengr.tamu.edu
Search for other works by this author on:
T. X. Phuoc
U.S. Department of Energy, Federal Energy Technology Center, P.O. Box 10904, Pittsburgh, PA 15236
e-mail: tran@fetc.doe.gov
K. Annamalai
Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123
e-mail: Kannamalai@mengr.tamu.edu
J. Heat Transfer. Nov 1999, 121(4): 886-893 (8 pages)
Published Online: November 1, 1999
Article history
Received:
January 1, 1999
Revised:
July 12, 1999
Online:
December 5, 2007
Citation
Phuoc, T. X., and Annamalai, K. (November 1, 1999). "A Heat and Mass Transfer Analysis of the Ignition and Extinction of Solid Char Particles." ASME. J. Heat Transfer. November 1999; 121(4): 886–893. https://doi.org/10.1115/1.2826079
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