Heat transfer by liquid convection in particulate fluidized beds
ПРЕНОС ТОПЛОТЕ КОНВЕКТИВНИМ МЕХАНИЗМОМ У ПАРТИКУЛАТИВНО ФЛУИДИЗОВАНОМ СЛОЈУ
Authors
Jaćimovski, Darko R.Brzić, Danica V.
Garić-Grulović, Radmila V.
Pjanović, Rada V.
Đuriš, Mihal M.
Arsenijević, Zorana L.J.
Bošković-Vragolović, Nevenka M.
Article (Published version)
Metadata
Show full item recordAbstract
In this work the theoretical model for heat transfer from a wall to a liquid-solid fluidized bed by liquid convective mechanism has been proposed and developed. The model is based on thickness of boundary layer and film theory. The key parameter in the model is the distance between two adjacent particles which collide with the wall. According to the proposed model, the liquid convective heat transfer in a fluidized bed is 4 to 5 times more intense than in a single-phase flow. Additionally, the wall-to-bed heat transfer coefficient has been measured experimentally in water–glass particles fluidized bed, for different particle sizes. Comparison of the model prediction with experimental data has shown that size of the particles strongly influences the mechanism of heat transfer. For fine particles of 0.8 mm in diameter, the liquid convective heat transfer model represents adequately the experimental data, indicating that particle convective mechanism is negligible. For coarse particles of... 1.5–2 mm in diameter, the liquid convective heat transfer mechanism accounts for 60 % of the overall heat transfer coefficient.
Keywords:
boundary layer / film theory / modelSource:
Journal of the Serbian Chemical Society, 2022, 87, 7-8, 911-924Publisher:
- Serbian Chemical Society
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-MESTD-inst-2020-200135)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
Note:
- Peer reviewed manuscript: https://technorep.tmf.bg.ac.rs/handle/123456789/5064
Related info:
DOI: 10.2298/JSC211216020J
ISSN: 0352-5139
WoS: 00079919140000
Scopus: 2-s2.0-85139655626
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Jaćimovski, Darko R. AU - Brzić, Danica V. AU - Garić-Grulović, Radmila V. AU - Pjanović, Rada V. AU - Đuriš, Mihal M. AU - Arsenijević, Zorana L.J. AU - Bošković-Vragolović, Nevenka M. PY - 2022 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5231 AB - In this work the theoretical model for heat transfer from a wall to a liquid-solid fluidized bed by liquid convective mechanism has been proposed and developed. The model is based on thickness of boundary layer and film theory. The key parameter in the model is the distance between two adjacent particles which collide with the wall. According to the proposed model, the liquid convective heat transfer in a fluidized bed is 4 to 5 times more intense than in a single-phase flow. Additionally, the wall-to-bed heat transfer coefficient has been measured experimentally in water–glass particles fluidized bed, for different particle sizes. Comparison of the model prediction with experimental data has shown that size of the particles strongly influences the mechanism of heat transfer. For fine particles of 0.8 mm in diameter, the liquid convective heat transfer model represents adequately the experimental data, indicating that particle convective mechanism is negligible. For coarse particles of 1.5–2 mm in diameter, the liquid convective heat transfer mechanism accounts for 60 % of the overall heat transfer coefficient. PB - Serbian Chemical Society T2 - Journal of the Serbian Chemical Society T1 - Heat transfer by liquid convection in particulate fluidized beds T1 - ПРЕНОС ТОПЛОТЕ КОНВЕКТИВНИМ МЕХАНИЗМОМ У ПАРТИКУЛАТИВНО ФЛУИДИЗОВАНОМ СЛОЈУ EP - 924 IS - 7-8 SP - 911 VL - 87 DO - 10.2298/JSC211216020J ER -
@article{ author = "Jaćimovski, Darko R. and Brzić, Danica V. and Garić-Grulović, Radmila V. and Pjanović, Rada V. and Đuriš, Mihal M. and Arsenijević, Zorana L.J. and Bošković-Vragolović, Nevenka M.", year = "2022", abstract = "In this work the theoretical model for heat transfer from a wall to a liquid-solid fluidized bed by liquid convective mechanism has been proposed and developed. The model is based on thickness of boundary layer and film theory. The key parameter in the model is the distance between two adjacent particles which collide with the wall. According to the proposed model, the liquid convective heat transfer in a fluidized bed is 4 to 5 times more intense than in a single-phase flow. Additionally, the wall-to-bed heat transfer coefficient has been measured experimentally in water–glass particles fluidized bed, for different particle sizes. Comparison of the model prediction with experimental data has shown that size of the particles strongly influences the mechanism of heat transfer. For fine particles of 0.8 mm in diameter, the liquid convective heat transfer model represents adequately the experimental data, indicating that particle convective mechanism is negligible. For coarse particles of 1.5–2 mm in diameter, the liquid convective heat transfer mechanism accounts for 60 % of the overall heat transfer coefficient.", publisher = "Serbian Chemical Society", journal = "Journal of the Serbian Chemical Society", title = "Heat transfer by liquid convection in particulate fluidized beds, ПРЕНОС ТОПЛОТЕ КОНВЕКТИВНИМ МЕХАНИЗМОМ У ПАРТИКУЛАТИВНО ФЛУИДИЗОВАНОМ СЛОЈУ", pages = "924-911", number = "7-8", volume = "87", doi = "10.2298/JSC211216020J" }
Jaćimovski, D. R., Brzić, D. V., Garić-Grulović, R. V., Pjanović, R. V., Đuriš, M. M., Arsenijević, Z. L.J.,& Bošković-Vragolović, N. M.. (2022). Heat transfer by liquid convection in particulate fluidized beds. in Journal of the Serbian Chemical Society Serbian Chemical Society., 87(7-8), 911-924. https://doi.org/10.2298/JSC211216020J
Jaćimovski DR, Brzić DV, Garić-Grulović RV, Pjanović RV, Đuriš MM, Arsenijević ZL, Bošković-Vragolović NM. Heat transfer by liquid convection in particulate fluidized beds. in Journal of the Serbian Chemical Society. 2022;87(7-8):911-924. doi:10.2298/JSC211216020J .
Jaćimovski, Darko R., Brzić, Danica V., Garić-Grulović, Radmila V., Pjanović, Rada V., Đuriš, Mihal M., Arsenijević, Zorana L.J., Bošković-Vragolović, Nevenka M., "Heat transfer by liquid convection in particulate fluidized beds" in Journal of the Serbian Chemical Society, 87, no. 7-8 (2022):911-924, https://doi.org/10.2298/JSC211216020J . .