TY  - JOUR
AU  - Kozić, Mirko
AU  - Ristić, Slavica S.
AU  - Katavić, Boris T.
AU  - Linić, Suzana
AU  - Prvulović, Mirjana
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6437
AB  - This article presents results of a numerical and experimental study of the temperature distribution inside and on the walls of the ventilation mill in the Kostolac B power plant, Serbia. This is very important because heat exchange between gas mixtures, ventilation mill walls and the environment, influences coal powder temperature, the combustion process, and the emission of greenhouse gases. The most complex multi-phase model in the Euler-Euler approach has been used through the ANSYS FLUENT code, for the numerical simulation of temperature distribution. Two ventilation mill models have been considered, one with zero wall thickness and the other one with steel walls, with and without insulation. An infrared thermographic camera was used for monitoring the temperature distribution on the outside wall of the ventilation mill housing, before insulator reparation, while after the reparation measurements were carried out at the selected points with infrared thermometer. The experimental results were used for verifying the results of the numerical simulation method as well as for detecting the damaged insulation.
PB  - Wiley Online Library
PB  - American Institute of Chemical Engineers
T2  - Environmental Progress & Sustainable Energy
T1  - Numerical and Experimental Study of Temperature Distribution on Thermal Plant Coal Mill Walls
EP  - 1527
IS  - 5
SP  - 1517
VL  - 36
DO  - 10.1002/ep.12599
ER  - 

@article{
author = "Kozić, Mirko and Ristić, Slavica S. and Katavić, Boris T. and Linić, Suzana and Prvulović, Mirjana",
year = "2017",
abstract = "This article presents results of a numerical and experimental study of the temperature distribution inside and on the walls of the ventilation mill in the Kostolac B power plant, Serbia. This is very important because heat exchange between gas mixtures, ventilation mill walls and the environment, influences coal powder temperature, the combustion process, and the emission of greenhouse gases. The most complex multi-phase model in the Euler-Euler approach has been used through the ANSYS FLUENT code, for the numerical simulation of temperature distribution. Two ventilation mill models have been considered, one with zero wall thickness and the other one with steel walls, with and without insulation. An infrared thermographic camera was used for monitoring the temperature distribution on the outside wall of the ventilation mill housing, before insulator reparation, while after the reparation measurements were carried out at the selected points with infrared thermometer. The experimental results were used for verifying the results of the numerical simulation method as well as for detecting the damaged insulation.",
publisher = "Wiley Online Library, American Institute of Chemical Engineers",
journal = "Environmental Progress & Sustainable Energy",
title = "Numerical and Experimental Study of Temperature Distribution on Thermal Plant Coal Mill Walls",
pages = "1527-1517",
number = "5",
volume = "36",
doi = "10.1002/ep.12599"
}

Kozić, M., Ristić, S. S., Katavić, B. T., Linić, S.,& Prvulović, M.. (2017). Numerical and Experimental Study of Temperature Distribution on Thermal Plant Coal Mill Walls. in Environmental Progress & Sustainable Energy
Wiley Online Library., 36(5), 1517-1527.
https://doi.org/10.1002/ep.12599

Kozić M, Ristić SS, Katavić BT, Linić S, Prvulović M. Numerical and Experimental Study of Temperature Distribution on Thermal Plant Coal Mill Walls. in Environmental Progress & Sustainable Energy. 2017;36(5):1517-1527.
doi:10.1002/ep.12599 .

Kozić, Mirko, Ristić, Slavica S., Katavić, Boris T., Linić, Suzana, Prvulović, Mirjana, "Numerical and Experimental Study of Temperature Distribution on Thermal Plant Coal Mill Walls" in Environmental Progress & Sustainable Energy, 36, no. 5 (2017):1517-1527,
https://doi.org/10.1002/ep.12599 . .

TY  - JOUR
AU  - Gligorijević, Bojan R.
AU  - Vencl, Aleksandar
AU  - Katavić, Boris T.
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4332
AB  - The properties of the high-chromium white iron (HCWI) hardfaced materials, such as hardness, toughness and wear resistance, are affected by the morphology of their reinforcing phase, the Cr-carbides. In this work, the influence of the 1) welding parameters, 2) welding procedures and 3) chemical composition on the near-surface Cr-carbides morphology is presented. Additionally, the effects of the nucleo C® formula (Castolin Eutectic Ltd.) of unknown composition are evaluated. The hardfaced coatings are deposited by using the submerged metal arc welding (SMAW) process. The obtained near-surface structures are observed with scanning electron microscope with energy dispersive system (SEM-EDS). The structure morphological parameters are quantitatively determined by use of the ImageJ software. In the single-layer HCWI hardfaced coatings, larger heat input per unit length (≈ 4.1 kJ/mm) is leading to a formation of the hypoeutectic structures. An approximately two times lower heat input (≈ 1.8 kJ/mm) stimulates the solidification of the near-eutectic structures with presence of spheroidized eutectic and primary Cr-carbides (the Nucleo C effect). The double-layer coatings deposited with the ≈ 1.8 kJ/mm possess the hypereutectic structures with blade-like primary and needle-like eutectic carbides (the absence of the Nucleo C effect). The lower heat input (≈ 1.4 kJ/mm) and increase of the chromium and carbon content result in a formation of the hypereutectic structures with presence of the primary rod-like Cr-carbides embedded in the eutectic matrix with coarser and irregular eutectic Cr-carbides. The influence of the nucleo C® formula on the Cr-carbides morphology is more pronounced in the single-layer HCWI hardfaced coatings than in the double-layer coatings.
PB  - Timisoara : Faculty of Management in Production and Transportation
T2  - Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic
T1  - Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings
EP  - 20
IS  - Special Issue S1
IS  - 71
SP  - 15
VL  - 57
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4332
ER  - 

@article{
author = "Gligorijević, Bojan R. and Vencl, Aleksandar and Katavić, Boris T.",
year = "2012",
abstract = "The properties of the high-chromium white iron (HCWI) hardfaced materials, such as hardness, toughness and wear resistance, are affected by the morphology of their reinforcing phase, the Cr-carbides. In this work, the influence of the 1) welding parameters, 2) welding procedures and 3) chemical composition on the near-surface Cr-carbides morphology is presented. Additionally, the effects of the nucleo C® formula (Castolin Eutectic Ltd.) of unknown composition are evaluated. The hardfaced coatings are deposited by using the submerged metal arc welding (SMAW) process. The obtained near-surface structures are observed with scanning electron microscope with energy dispersive system (SEM-EDS). The structure morphological parameters are quantitatively determined by use of the ImageJ software. In the single-layer HCWI hardfaced coatings, larger heat input per unit length (≈ 4.1 kJ/mm) is leading to a formation of the hypoeutectic structures. An approximately two times lower heat input (≈ 1.8 kJ/mm) stimulates the solidification of the near-eutectic structures with presence of spheroidized eutectic and primary Cr-carbides (the Nucleo C effect). The double-layer coatings deposited with the ≈ 1.8 kJ/mm possess the hypereutectic structures with blade-like primary and needle-like eutectic carbides (the absence of the Nucleo C effect). The lower heat input (≈ 1.4 kJ/mm) and increase of the chromium and carbon content result in a formation of the hypereutectic structures with presence of the primary rod-like Cr-carbides embedded in the eutectic matrix with coarser and irregular eutectic Cr-carbides. The influence of the nucleo C® formula on the Cr-carbides morphology is more pronounced in the single-layer HCWI hardfaced coatings than in the double-layer coatings.",
publisher = "Timisoara : Faculty of Management in Production and Transportation",
journal = "Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic",
title = "Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings",
pages = "20-15",
number = "Special Issue S1, 71",
volume = "57",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4332"
}

Gligorijević, B. R., Vencl, A.,& Katavić, B. T.. (2012). Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings. in Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic
Timisoara : Faculty of Management in Production and Transportation., 57(Special Issue S1), 15-20.
https://hdl.handle.net/21.15107/rcub_machinery_4332

Gligorijević BR, Vencl A, Katavić BT. Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings. in Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic. 2012;57(Special Issue S1):15-20.
https://hdl.handle.net/21.15107/rcub_machinery_4332 .

Gligorijević, Bojan R., Vencl, Aleksandar, Katavić, Boris T., "Characterization and comparison of the carbides morphologies in the near surface region of the single- and double layer iron-based hardfaced coatings" in Scientific Bulletin of the "Politehnica" University of Timişoara. Transaction on Mechanic, 57, no. Special Issue S1 (2012):15-20,
https://hdl.handle.net/21.15107/rcub_machinery_4332 .