THE 3-D MODELLING OF HEAT AND MASS TRANSFER DURING COMBUSTION OF LOW-GRADE COAL
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F20%3A00346109" target="_blank" >RIV/68407700:21220/20:00346109 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.2298/TSCI191107062S" target="_blank" >https://doi.org/10.2298/TSCI191107062S</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2298/TSCI191107062S" target="_blank" >10.2298/TSCI191107062S</a>
Alternative languages
Result language
angličtina
Original language name
THE 3-D MODELLING OF HEAT AND MASS TRANSFER DURING COMBUSTION OF LOW-GRADE COAL
Original language description
Using numerical methods, the basic characteristics of heat and mass transfer processes in the furnace chamber of the BKZ-75 boiler of the Shakhtinskaya TPP (Kazakhstan) were studied during a forced partial stop of the supply of coal dust through the burners. Two modes of fuel supply were studied; a direct-flow method of supplying air mixtures, when two direct-flow burners are working and two are in emergency mode and vortex method of supplying air mixtures - two vortex burners with a swirl angle of the air mixture flow and their inclination the center of symmetry of the boiler by 30 degrees and two are in emergency mode. The computational experiments allowed to obtain the distributions of the total velocity vector, temperature fields, concentration fields of CO, NO2 throughout the entire volume of the combustion chamber and conduct a comparative analysis for the two investigated emergency mode (direct-flow and vortex). Based on the results, it can be concluded that in the case of a forced partial stop of the supply of coal dust, the use of the vortex method of supplying air mixtures improves heat and mass transfer processes and allows minimizing emissions of harmful substances.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20303 - Thermodynamics
Result continuities
Project
—
Continuities
O - Projekt operacniho programu
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Thermal Science
ISSN
0354-9836
e-ISSN
2334-7163
Volume of the periodical
24
Issue of the periodical within the volume
5
Country of publishing house
CS - SERBIA AND MONTENEGRO
Number of pages
10
Pages from-to
2823-2832
UT code for WoS article
000543104900014
EID of the result in the Scopus database
2-s2.0-85089245543