Abstract
Numerical researches have been carried out to study the influence of air flow temperature and a fossil fuel particle rate on sufficient conditions of ignition in a "coal particle - air" system. Developed mathematical model takes into account interconnected processes of heat transfer in a coal particle and gas area, thermal decomposition of organic material, diffusion and gas-phase oxidation of volatiles, heating of a coke (carbon) and its heterogeneous ignition. The effect of low-temperature (about 600 K) ignition for a single coal particle is impossible even at variation of its rate (radius) from 0.05 mm to 0.5 mm. Nevertheless this process is possible for group of particles (two, three, et al.) situated at close-range from each other. The physical aspects of the problem are discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 285-294 |
| Number of pages | 10 |
| Journal | Thermal Science |
| Volume | 19 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2015 |
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Keywords
- Coal particle
- Heat and mass transfer
- Ignition
- Low-temperature air flow
- Numerical research
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
Cite this
Numerical research of heat and mass transfer during low-temperature ignition of a coal particle. / Glushkov, Dmitrii O.; Strizhak, Pavel A.; Vysokomornaya, Olga V.
In: Thermal Science, Vol. 19, No. 1, 2015, p. 285-294.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Numerical research of heat and mass transfer during low-temperature ignition of a coal particle
AU - Glushkov, Dmitrii O.
AU - Strizhak, Pavel A.
AU - Vysokomornaya, Olga V.
PY - 2015
Y1 - 2015
N2 - Numerical researches have been carried out to study the influence of air flow temperature and a fossil fuel particle rate on sufficient conditions of ignition in a "coal particle - air" system. Developed mathematical model takes into account interconnected processes of heat transfer in a coal particle and gas area, thermal decomposition of organic material, diffusion and gas-phase oxidation of volatiles, heating of a coke (carbon) and its heterogeneous ignition. The effect of low-temperature (about 600 K) ignition for a single coal particle is impossible even at variation of its rate (radius) from 0.05 mm to 0.5 mm. Nevertheless this process is possible for group of particles (two, three, et al.) situated at close-range from each other. The physical aspects of the problem are discussed.
AB - Numerical researches have been carried out to study the influence of air flow temperature and a fossil fuel particle rate on sufficient conditions of ignition in a "coal particle - air" system. Developed mathematical model takes into account interconnected processes of heat transfer in a coal particle and gas area, thermal decomposition of organic material, diffusion and gas-phase oxidation of volatiles, heating of a coke (carbon) and its heterogeneous ignition. The effect of low-temperature (about 600 K) ignition for a single coal particle is impossible even at variation of its rate (radius) from 0.05 mm to 0.5 mm. Nevertheless this process is possible for group of particles (two, three, et al.) situated at close-range from each other. The physical aspects of the problem are discussed.
KW - Coal particle
KW - Heat and mass transfer
KW - Ignition
KW - Low-temperature air flow
KW - Numerical research
UR - http://www.scopus.com/inward/record.url?scp=84924697366&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84924697366&partnerID=8YFLogxK
U2 - 10.2298/TSCI140521107G
DO - 10.2298/TSCI140521107G
M3 - Article
VL - 19
SP - 285
EP - 294
JO - Thermal Science
JF - Thermal Science
SN - 0354-9836
IS - 1
ER -