Influence of Application of Hottels Zonal Model and Six-Flux Model of Thermal Radiation on Numerical Simulations Results of Pulverized Coal Fired Furnace
2012
Preuzimanje 🢃
Autori
Crnomarković, Nenad Đ.Sijercic, Miroslav A.
Belošević, Srđan
Tucaković, Dragan R.
Živanović, Titoslav V.
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Difference of results of numerical simulation of pulverized coal fired furnace when mathematical models contain various radiation models has been described in the paper. Two sets of numerical simulations of pulverized coal fired furnace of 210 MWe power boiler have been performed. One numerical simulation has contained Hottels zonal model, whereas the other numerical simulation has contained six-flux model. Other details of numerical simulations have been identical. The influence of radiation models has been examined through comparison of selected variables (gas-phase temperature, oxygen concentration, and absorbed radiative heat rate of surface zones of rear and right furnace walls), selected global parameters of furnace operation (total absorbed heat rate by all furnace walls and furnace exit gas-phase temperature). Computation time has been compared as well. Spatially distributed variables have been compared through maximal local differences and mean differences. Maximal local diffe...rence of gas-phase temperature has been 8.44%. Maximal local difference of absorbed radiative heat rate of the surface zones has been almost 80.0%. Difference of global parameters of furnace operation has been expressed in percents of value obtained by mathematical model containing Hottels zonal model and has not been bigger than 7.0%. Computation time for calculation of 1000 iterations has been approximately the same. Comparison with other radiation models is necessary for assessment of differences.
Ključne reči:
numerical simulation / pulverized coal / thermal radiation / six-flux model / Hottels zonal modelIzvor:
Thermal Science, 2012, 16, 1, 271-282Finansiranje / projekti:
- Povećanje energetske i ekološke efikasnosti procesa u ložištu za ugljeni prah i optimizacija izlazne grejne površine energetskog parnog kotla primenom sopstvenih softverskih alata (RS-MESTD-Technological Development (TD or TR)-33018)
DOI: 10.2298/TSCI110627126C
ISSN: 0354-9836
WoS: 000303348700024
Scopus: 2-s2.0-84868379453
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Crnomarković, Nenad Đ. AU - Sijercic, Miroslav A. AU - Belošević, Srđan AU - Tucaković, Dragan R. AU - Živanović, Titoslav V. PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4821 AB - Difference of results of numerical simulation of pulverized coal fired furnace when mathematical models contain various radiation models has been described in the paper. Two sets of numerical simulations of pulverized coal fired furnace of 210 MWe power boiler have been performed. One numerical simulation has contained Hottels zonal model, whereas the other numerical simulation has contained six-flux model. Other details of numerical simulations have been identical. The influence of radiation models has been examined through comparison of selected variables (gas-phase temperature, oxygen concentration, and absorbed radiative heat rate of surface zones of rear and right furnace walls), selected global parameters of furnace operation (total absorbed heat rate by all furnace walls and furnace exit gas-phase temperature). Computation time has been compared as well. Spatially distributed variables have been compared through maximal local differences and mean differences. Maximal local difference of gas-phase temperature has been 8.44%. Maximal local difference of absorbed radiative heat rate of the surface zones has been almost 80.0%. Difference of global parameters of furnace operation has been expressed in percents of value obtained by mathematical model containing Hottels zonal model and has not been bigger than 7.0%. Computation time for calculation of 1000 iterations has been approximately the same. Comparison with other radiation models is necessary for assessment of differences. T2 - Thermal Science T1 - Influence of Application of Hottels Zonal Model and Six-Flux Model of Thermal Radiation on Numerical Simulations Results of Pulverized Coal Fired Furnace VL - 16 IS - 1 SP - 271 EP - 282 DO - 10.2298/TSCI110627126C ER -
@article{ author = "Crnomarković, Nenad Đ. and Sijercic, Miroslav A. and Belošević, Srđan and Tucaković, Dragan R. and Živanović, Titoslav V.", year = "2012", abstract = "Difference of results of numerical simulation of pulverized coal fired furnace when mathematical models contain various radiation models has been described in the paper. Two sets of numerical simulations of pulverized coal fired furnace of 210 MWe power boiler have been performed. One numerical simulation has contained Hottels zonal model, whereas the other numerical simulation has contained six-flux model. Other details of numerical simulations have been identical. The influence of radiation models has been examined through comparison of selected variables (gas-phase temperature, oxygen concentration, and absorbed radiative heat rate of surface zones of rear and right furnace walls), selected global parameters of furnace operation (total absorbed heat rate by all furnace walls and furnace exit gas-phase temperature). Computation time has been compared as well. Spatially distributed variables have been compared through maximal local differences and mean differences. Maximal local difference of gas-phase temperature has been 8.44%. Maximal local difference of absorbed radiative heat rate of the surface zones has been almost 80.0%. Difference of global parameters of furnace operation has been expressed in percents of value obtained by mathematical model containing Hottels zonal model and has not been bigger than 7.0%. Computation time for calculation of 1000 iterations has been approximately the same. Comparison with other radiation models is necessary for assessment of differences.", journal = "Thermal Science", title = "Influence of Application of Hottels Zonal Model and Six-Flux Model of Thermal Radiation on Numerical Simulations Results of Pulverized Coal Fired Furnace", volume = "16", number = "1", pages = "271-282", doi = "10.2298/TSCI110627126C" }
Crnomarković, N. Đ., Sijercic, M. A., Belošević, S., Tucaković, D. R.,& Živanović, T. V.. (2012). Influence of Application of Hottels Zonal Model and Six-Flux Model of Thermal Radiation on Numerical Simulations Results of Pulverized Coal Fired Furnace. in Thermal Science, 16(1), 271-282. https://doi.org/10.2298/TSCI110627126C
Crnomarković NĐ, Sijercic MA, Belošević S, Tucaković DR, Živanović TV. Influence of Application of Hottels Zonal Model and Six-Flux Model of Thermal Radiation on Numerical Simulations Results of Pulverized Coal Fired Furnace. in Thermal Science. 2012;16(1):271-282. doi:10.2298/TSCI110627126C .
Crnomarković, Nenad Đ., Sijercic, Miroslav A., Belošević, Srđan, Tucaković, Dragan R., Živanović, Titoslav V., "Influence of Application of Hottels Zonal Model and Six-Flux Model of Thermal Radiation on Numerical Simulations Results of Pulverized Coal Fired Furnace" in Thermal Science, 16, no. 1 (2012):271-282, https://doi.org/10.2298/TSCI110627126C . .