Journal of the Japan Institute of Energy
Online ISSN : 1882-6121
Print ISSN : 0916-8753
ISSN-L : 0916-8753
A Numerical Study on a Single Char Particle Combustion Around Ash Melting Temperature
Caixia CHENShigeyuki UEMIYAToshinori KOJIMA
Author information
JOURNALS FREE ACCESS

1995 Volume 74 Issue 10 Pages 882-888

Details
Abstract

The ash layer diffusion controlling model and a finite difference method were successfully employed to simulate a single char particle combustion at around ash melting temperature. The numerical modeling was conducted under the operation conditions similar to the author's previous experiment. It was found that the numerical temperature profile in a burning char particle was strongly influenced by the ash layer heat conductivity. By considering the ash layer heat conductivity was varied with time, the simulated particle time temperature profiles agreed well with the experimental results. And the optimum value of ash layer heat conductivity to fit the experimental temperature variation with time was found to be increased with ash content and maximum combustion temperature. The agreement between the simulation and experimental results proved the validation of the numerical modeling. The numerical study also suggested that the smaller particle reaches its peak temperature quicker than larger particles and gives the higher peak temperature.

Information related to the author
© The Japan Institute of Energy
Previous article Next article
feedback
Top