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Smoldering combustion of dust layer on hot surface
Faculty
Not Specified
Year:
2000
Type of Publication:
Article
Pages:
509-517
Authors:
El-Sayed, SA, Abdel-Latif, AM
DOI:
10.1016/S0950-4230(00)00004-8
Journal:
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES ELSEVIER SCI LTD
Volume:
13
Research Area:
Engineering
ISSN
ISI:000087763500008
Keywords :
smoldering combustion, dust layer, ignition time, critical ignition temperature
Abstract:
The critical temperature as well as the critical flux for ignition of a dust layer of cornflour and a mixture of wheatflour and cornflour (80\% wheatflour+20\% cornflour) on a hot plate have been determined. The moulded sample was cylindrical in shape and of different heights and diameters. The particle size of dusts ranged between 63 mu m to 150 mu m. The temperature-time histories for self-heating without ignition and with ignition are offered, showing the critical boundaries between them. Also the times to ignition for each dust, showing the effect of sample size on their values, are determined-Certain experimental correlations which relate to times to ignition, as well as the critical temperature for ignition and thermal and geometrical dimensions of sample are presented. (C) 2000 Elsevier Science Ltd. All rights reserved.
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