Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases
Нема приказа
Аутори
Crnomarković, Nenad Đ.Sijercic, Miroslav
Belošević, Srđan
Tucaković, Dragan R.
Živanović, Titoslav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The objective of the research was to find if an agreement of the results of a numerical investigation with experimental data could be achieved considering the two-phase medium in thermal equilibrium. Influence of the gray radiative properties on the radiative heat exchange inside pulverized lignite fired furnaces was investigated using the computational fluid dynamics (CFD) code based on a comprehensive mathematical model of the process. Radiative heat exchange was calculated using Hottels zonal model. Heat transfer rates and wall fluxes increased for small values of the total extinction coefficient, K-t LT 0.2 m(-1); decreased for large values of K-t, K-t GT 2.0 m(-1); and were maximal for moderate values of K-t, 0.2 LT K-t LT 2.0 m(-1). Heat transfer rates and wall fluxes decreased with the increase of the scattering albedo, though the decrease was considerable only for omega GT 0.5. Agreement with the experimental data was obtained for the moderate values of the K-t and for scatteri...ng albedo 0.1 LT omega LT 0.5. (C) 2014 Elsevier Masson SAS. All rights reserved.
Кључне речи:
Pulverized lignite fired furnace / Thermal equilibrium / Hottels zonal model / Gray radiative properties / Radiative heat exchangeИзвор:
International Journal of Thermal Sciences, 2014, 85, 21-28Финансирање / пројекти:
- Повећање енергетске и еколошке ефикасности процеса у ложишту за угљени прах и оптимизација излазне грејне површине енергетског парног котла применом сопствених софтверских алата (RS-MESTD-Technological Development (TD or TR)-33018)
DOI: 10.1016/j.ijthermalsci.2014.06.014
ISSN: 1290-0729; 1778-4166
WoS: 000341744200003
Scopus: 2-s2.0-84904200014
Колекције
Институција/група
VinčaTY - JOUR AU - Crnomarković, Nenad Đ. AU - Sijercic, Miroslav AU - Belošević, Srđan AU - Tucaković, Dragan R. AU - Živanović, Titoslav PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/118 AB - The objective of the research was to find if an agreement of the results of a numerical investigation with experimental data could be achieved considering the two-phase medium in thermal equilibrium. Influence of the gray radiative properties on the radiative heat exchange inside pulverized lignite fired furnaces was investigated using the computational fluid dynamics (CFD) code based on a comprehensive mathematical model of the process. Radiative heat exchange was calculated using Hottels zonal model. Heat transfer rates and wall fluxes increased for small values of the total extinction coefficient, K-t LT 0.2 m(-1); decreased for large values of K-t, K-t GT 2.0 m(-1); and were maximal for moderate values of K-t, 0.2 LT K-t LT 2.0 m(-1). Heat transfer rates and wall fluxes decreased with the increase of the scattering albedo, though the decrease was considerable only for omega GT 0.5. Agreement with the experimental data was obtained for the moderate values of the K-t and for scattering albedo 0.1 LT omega LT 0.5. (C) 2014 Elsevier Masson SAS. All rights reserved. T2 - International Journal of Thermal Sciences T1 - Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases VL - 85 SP - 21 EP - 28 DO - 10.1016/j.ijthermalsci.2014.06.014 ER -
@article{ author = "Crnomarković, Nenad Đ. and Sijercic, Miroslav and Belošević, Srđan and Tucaković, Dragan R. and Živanović, Titoslav", year = "2014", abstract = "The objective of the research was to find if an agreement of the results of a numerical investigation with experimental data could be achieved considering the two-phase medium in thermal equilibrium. Influence of the gray radiative properties on the radiative heat exchange inside pulverized lignite fired furnaces was investigated using the computational fluid dynamics (CFD) code based on a comprehensive mathematical model of the process. Radiative heat exchange was calculated using Hottels zonal model. Heat transfer rates and wall fluxes increased for small values of the total extinction coefficient, K-t LT 0.2 m(-1); decreased for large values of K-t, K-t GT 2.0 m(-1); and were maximal for moderate values of K-t, 0.2 LT K-t LT 2.0 m(-1). Heat transfer rates and wall fluxes decreased with the increase of the scattering albedo, though the decrease was considerable only for omega GT 0.5. Agreement with the experimental data was obtained for the moderate values of the K-t and for scattering albedo 0.1 LT omega LT 0.5. (C) 2014 Elsevier Masson SAS. All rights reserved.", journal = "International Journal of Thermal Sciences", title = "Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases", volume = "85", pages = "21-28", doi = "10.1016/j.ijthermalsci.2014.06.014" }
Crnomarković, N. Đ., Sijercic, M., Belošević, S., Tucaković, D. R.,& Živanović, T.. (2014). Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases. in International Journal of Thermal Sciences, 85, 21-28. https://doi.org/10.1016/j.ijthermalsci.2014.06.014
Crnomarković NĐ, Sijercic M, Belošević S, Tucaković DR, Živanović T. Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases. in International Journal of Thermal Sciences. 2014;85:21-28. doi:10.1016/j.ijthermalsci.2014.06.014 .
Crnomarković, Nenad Đ., Sijercic, Miroslav, Belošević, Srđan, Tucaković, Dragan R., Živanović, Titoslav, "Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases" in International Journal of Thermal Sciences, 85 (2014):21-28, https://doi.org/10.1016/j.ijthermalsci.2014.06.014 . .