Heterogeneous ignition of coal dust clouds

Higuera Antón, Francisco and Liñán Martínez, Amable and Treviño, César (1989). Heterogeneous ignition of coal dust clouds. "Combustion and Flame", v. 75 ; pp. 325-342. ISSN 0010-2180.

Description

Title: Heterogeneous ignition of coal dust clouds
Author/s:
  • Higuera Antón, Francisco
  • Liñán Martínez, Amable
  • Treviño, César
Item Type: Article
Título de Revista/Publicación: Combustion and Flame
Date: 1989
ISSN: 0010-2180
Volume: 75
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We analyze the heterogeneous ignition of a coal particle suspensión bounded by two parallel isothermal walls in the limit of large gas/particles thermal capacity ratio, in which the temperature difference between the particles and the gas is important. Radiative heat transfer is accounted for by using the Eddington differential approximation, and heat conduction between the particles and the gas is also included in the model. Heat reléase is assumed to occur at the surface of the particles through the heterogeneous reaction C(s) + 1/2 02 -* CO, obeying an Arrhenius law with large activation energy. Critical conditions for ignition are determined on the basis of a quasi-steady treatment. The effects of gas/wall temperature ratio, conduction/radiation parameter, and size of the reacting cloud relative to the óptica! length are explained.

More information

Item ID: 1302
DC Identifier: http://oa.upm.es/1302/
OAI Identifier: oai:oa.upm.es:1302
Official URL: http://www.sciencedirect.com/science//journal/00102180
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 21 Apr 2009
Last Modified: 20 Apr 2016 06:46
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