Title: Effect of the radiation heat loss on propagation of the spherical flame through premixed coal dust

Authors: Mehdi Bidabadi; Abazar Vahdat Azad

Addresses: School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Zip Code: 16846-13114, Mail Box: 16765-163, Iran ' School of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Zip Code: 16846-13114, Mail Box: 16765-163, Iran

Abstract: An analytical study has been conducted to investigate the effect of radiation heat loss on the spherical flame propagation in coal-dust clouds. This research can be valuable in the development of alternative fuels; and it can be used by the fire safety and control industry. The model includes the evaporation of the volatile matter of dust particles into a known gaseous fuel (methane) and the single-stage reaction of the gas-phase combustion. The radiation heat losses occur between the reaction zone and the surrounding environment (air). The study is within the framework of large activation energy and quasi-steady state assumptions. The theoretical predictions, including the burning velocity, are validated by the results presented in other works. [Received: January 2, 2014; Accepted: April 11, 2013]

Keywords: gas-phase combustion; coal dust clouds; spherical flame propagation; radiation heat loss; premixed flame; fire safety; premixed coal dust; alternative fuels; methane; modelling; burning velocity.

DOI: 10.1504/IJOGCT.2014.066302

International Journal of Oil, Gas and Coal Technology, 2014 Vol.8 No.4, pp.468 - 488

Received: 13 Apr 2013
Accepted: 02 Jan 2014
Published online: 23 Dec 2014 *

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