TY  - JOUR
AU  - Ayub, Hafiz Muhammad Uzair
AU  - Alnouri, Sabla Y.
AU  - Stijepović, Mirko
AU  - Stijepović, Vladimir
AU  - Hussein, Ibnelwaleed A.
PY  - 2024-06
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7449
AB  - Energy systems are undergoing rapid change as the world responds to climate change. Many policymakers may ask, what will be the next great energy source for a low-carbon future? All indications so far point to hydrogen energy. Although it is anticipated that costs will likely fall as the hydrogen production scale increases, it may be reported that the high technology costs remain a barrier to the widespread shift towards hydrogen. This paper presents hydrogen production costs for various production methods for different regions across the world, including the USA, the Middle East, Europe, India, and Canada. The costs of hydrogen production from biomass gasification, coal gasification, and natural gas reforming are compared, revealing the varying costs across different regions. Moreover, the production of green hydrogen from renewable energy sources is also presented, and compared with conventional methods. It highlights that while green hydrogen is environmentally sustainable, its production remains cost-intensive compared to integrated processes. Notably, the Middle East and India demonstrate the most economical production costs for both electrolysis and nuclear-based processes, while Europe shows the highest costs. The information presented in this paper could be helpful for researchers and policymakers to make informed decisions regarding the necessary aspects that still need to be investigated, to help with the transition into a hydrogen energy future.
PB  - Institution of Chemical Engineers
T2  - Process Safety and Environmental Protection
T1  - A cost comparison study for hydrogen production between conventional and renewable methods
EP  - 932
SP  - 921
VL  - 186
DO  - 10.1016/j.psep.2024.04.080
ER  - 

@article{
author = "Ayub, Hafiz Muhammad Uzair and Alnouri, Sabla Y. and Stijepović, Mirko and Stijepović, Vladimir and Hussein, Ibnelwaleed A.",
year = "2024-06",
abstract = "Energy systems are undergoing rapid change as the world responds to climate change. Many policymakers may ask, what will be the next great energy source for a low-carbon future? All indications so far point to hydrogen energy. Although it is anticipated that costs will likely fall as the hydrogen production scale increases, it may be reported that the high technology costs remain a barrier to the widespread shift towards hydrogen. This paper presents hydrogen production costs for various production methods for different regions across the world, including the USA, the Middle East, Europe, India, and Canada. The costs of hydrogen production from biomass gasification, coal gasification, and natural gas reforming are compared, revealing the varying costs across different regions. Moreover, the production of green hydrogen from renewable energy sources is also presented, and compared with conventional methods. It highlights that while green hydrogen is environmentally sustainable, its production remains cost-intensive compared to integrated processes. Notably, the Middle East and India demonstrate the most economical production costs for both electrolysis and nuclear-based processes, while Europe shows the highest costs. The information presented in this paper could be helpful for researchers and policymakers to make informed decisions regarding the necessary aspects that still need to be investigated, to help with the transition into a hydrogen energy future.",
publisher = "Institution of Chemical Engineers",
journal = "Process Safety and Environmental Protection",
title = "A cost comparison study for hydrogen production between conventional and renewable methods",
pages = "932-921",
volume = "186",
doi = "10.1016/j.psep.2024.04.080"
}

Ayub, H. M. U., Alnouri, S. Y., Stijepović, M., Stijepović, V.,& Hussein, I. A.. (2024-06). A cost comparison study for hydrogen production between conventional and renewable methods. in Process Safety and Environmental Protection
Institution of Chemical Engineers., 186, 921-932.
https://doi.org/10.1016/j.psep.2024.04.080

Ayub HMU, Alnouri SY, Stijepović M, Stijepović V, Hussein IA. A cost comparison study for hydrogen production between conventional and renewable methods. in Process Safety and Environmental Protection. 2024;186:921-932.
doi:10.1016/j.psep.2024.04.080 .

Ayub, Hafiz Muhammad Uzair, Alnouri, Sabla Y., Stijepović, Mirko, Stijepović, Vladimir, Hussein, Ibnelwaleed A., "A cost comparison study for hydrogen production between conventional and renewable methods" in Process Safety and Environmental Protection, 186 (2024-06):921-932,
https://doi.org/10.1016/j.psep.2024.04.080 . .

TY  - JOUR
AU  - Barać, Nemanja
AU  - Dimić‑Mišić, Katarina
AU  - Stijepović, Mirko
AU  - Kijevčanin, Mirjana
AU  - Imani, Monireh
AU  - Uskoković, Petar
AU  - Janaćković, Đorđe
AU  - Barceló, Ernesto
AU  - Gane, Patrick
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7364
AB  - Of major interest, especially in city environments, and increasingly inside vehicles or industrial plants, is the drive to reduce human exposure to nitrogen oxides (NOx). This trend has drawn increasing attention to filtration, which has developed remarkably owing to the capabilities of recently developed mathematical models and novel filter concepts. This paper reports on the study of the kinetic modelling of adsorption of nitrogen dioxide (NO2), collected from the tailpipe of a diesel engine, reacting to calcium nitrate salt (Ca(NO3)2) on a surface flow filter consisting of a coating of fine ground limestone or marble (CaCO3) in combination with micro-nanofibrillated cellulose (MNFC) acting as binder and humectant applied onto a multiply recycled newsprint substrate. The coating and substrate are both porous, but on different pore size scales, with the coating having significantly lower permeability. To maximise gas-coating contact, therefore, the coating deposition is pixelated, achieved by pin coating. An axially dispersed gaseous plug flow model (dispersion model) was used to simulate the transport within the coating pore network structure, following earlier flow modelling studies, and a kinetic reaction model was used to examine NO2 to NO3− conversion in correlation with experimental results. Modelling results indicate a 60.38% conversion of exposed NO2 gas to Ca(NO3)2 under the specific conditions applied, with an absolute relative error between the predicted and experimentally estimated value being 0.81%. The model additionally enabled a prediction of effects of changing parameters over a limited perturbation range, thus assisting in predicting filter element consumption, with attention given to the active component CaCO3 surface as a function of particle size in relation to the gas contact exchange, promoting the reaction over time. It is intended that the Ca(NO3)2 formed from the reaction can go on to be used as a value-added fertiliser, thus contributing to circular economy. Graphical abstract: (Figure presented.)
PB  - Springer
T2  - Environmental Science and Pollution Research
T1  - Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust
DO  - 10.1007/s11356-024-32743-x
ER  - 

@article{
author = "Barać, Nemanja and Dimić‑Mišić, Katarina and Stijepović, Mirko and Kijevčanin, Mirjana and Imani, Monireh and Uskoković, Petar and Janaćković, Đorđe and Barceló, Ernesto and Gane, Patrick",
year = "2024",
abstract = "Of major interest, especially in city environments, and increasingly inside vehicles or industrial plants, is the drive to reduce human exposure to nitrogen oxides (NOx). This trend has drawn increasing attention to filtration, which has developed remarkably owing to the capabilities of recently developed mathematical models and novel filter concepts. This paper reports on the study of the kinetic modelling of adsorption of nitrogen dioxide (NO2), collected from the tailpipe of a diesel engine, reacting to calcium nitrate salt (Ca(NO3)2) on a surface flow filter consisting of a coating of fine ground limestone or marble (CaCO3) in combination with micro-nanofibrillated cellulose (MNFC) acting as binder and humectant applied onto a multiply recycled newsprint substrate. The coating and substrate are both porous, but on different pore size scales, with the coating having significantly lower permeability. To maximise gas-coating contact, therefore, the coating deposition is pixelated, achieved by pin coating. An axially dispersed gaseous plug flow model (dispersion model) was used to simulate the transport within the coating pore network structure, following earlier flow modelling studies, and a kinetic reaction model was used to examine NO2 to NO3− conversion in correlation with experimental results. Modelling results indicate a 60.38% conversion of exposed NO2 gas to Ca(NO3)2 under the specific conditions applied, with an absolute relative error between the predicted and experimentally estimated value being 0.81%. The model additionally enabled a prediction of effects of changing parameters over a limited perturbation range, thus assisting in predicting filter element consumption, with attention given to the active component CaCO3 surface as a function of particle size in relation to the gas contact exchange, promoting the reaction over time. It is intended that the Ca(NO3)2 formed from the reaction can go on to be used as a value-added fertiliser, thus contributing to circular economy. Graphical abstract: (Figure presented.)",
publisher = "Springer",
journal = "Environmental Science and Pollution Research",
title = "Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust",
doi = "10.1007/s11356-024-32743-x"
}

Barać, N., Dimić‑Mišić, K., Stijepović, M., Kijevčanin, M., Imani, M., Uskoković, P., Janaćković, Đ., Barceló, E.,& Gane, P.. (2024). Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust. in Environmental Science and Pollution Research
Springer..
https://doi.org/10.1007/s11356-024-32743-x

Barać N, Dimić‑Mišić K, Stijepović M, Kijevčanin M, Imani M, Uskoković P, Janaćković Đ, Barceló E, Gane P. Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust. in Environmental Science and Pollution Research. 2024;.
doi:10.1007/s11356-024-32743-x .

Barać, Nemanja, Dimić‑Mišić, Katarina, Stijepović, Mirko, Kijevčanin, Mirjana, Imani, Monireh, Uskoković, Petar, Janaćković, Đorđe, Barceló, Ernesto, Gane, Patrick, "Real-time application and modelling of the NOx-sorption reaction on a particulate calcium carbonate surface-flow filter exposed to combustion exhaust" in Environmental Science and Pollution Research (2024),
https://doi.org/10.1007/s11356-024-32743-x . .

TY  - JOUR
AU  - Simić, Zoran V.
AU  - Radović, Ivona R.
AU  - Stijepović, Mirko Z.
AU  - Kijevčanin, Mirjana Lj.
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6030
AB  - The aim of this study was to examine the possibility of using a green organic solvent, dimethyl adipate (DMA), as a separation agent in the extraction of different alcohols from aqueous solutions. For that purpose, the liquid–liquid equilibria (LLE) of four ternary systems were analytically determined at 298.15 K and atmospheric pressure using stirred and thermo-regulated cells: {water + methanol + dimethyl adipate (DMA)}, {water + ethanol + DMA}, {water + 1-propanol + DMA}, {water + 2-propanol + DMA}. Phase diagrams for these four ternary systems were obtained by determining a binodal curve and tie-lines data using a visual cloud-point method, but also gas chromatography. Distribution coefficients and separation factors were calculated for the immiscibility region. Hand and Othmer-Tobias correlations were used to examine the reliability of the tie-line data. In addition, the experimental ternary LLE data were correlated with the UNIversal QUAsiChemical (UNIQUAC) activity coefficient models. The obtained results showed that DMA is a suitable candidate for the extraction of methanol, ethanol, 1-propanol, and 2-propanol from water. With some alcohols, this potential is more noticeable than with others. The potential of DMA as a separation agent is increasing in the following sequence: methanol < ethanol < 2-propanol < 1-propanol, and that also could be noticed from the selectivity values that also increase in this sequence. The UNIQUAC model proved as successful in correlating the LLE data.
PB  - Elsevier B.V.
T2  - Journal of Molecular Liquids
T1  - Liquid-liquid equilibria of the ternary systems water + C1 – C3 alcohols + dimethyl adipate at 298.15 K and atmospheric pressure: Experimental data and modeling
SP  - 121542
VL  - 377
DO  - 10.1016/j.molliq.2023.121542
ER  - 

@article{
author = "Simić, Zoran V. and Radović, Ivona R. and Stijepović, Mirko Z. and Kijevčanin, Mirjana Lj.",
year = "2023",
abstract = "The aim of this study was to examine the possibility of using a green organic solvent, dimethyl adipate (DMA), as a separation agent in the extraction of different alcohols from aqueous solutions. For that purpose, the liquid–liquid equilibria (LLE) of four ternary systems were analytically determined at 298.15 K and atmospheric pressure using stirred and thermo-regulated cells: {water + methanol + dimethyl adipate (DMA)}, {water + ethanol + DMA}, {water + 1-propanol + DMA}, {water + 2-propanol + DMA}. Phase diagrams for these four ternary systems were obtained by determining a binodal curve and tie-lines data using a visual cloud-point method, but also gas chromatography. Distribution coefficients and separation factors were calculated for the immiscibility region. Hand and Othmer-Tobias correlations were used to examine the reliability of the tie-line data. In addition, the experimental ternary LLE data were correlated with the UNIversal QUAsiChemical (UNIQUAC) activity coefficient models. The obtained results showed that DMA is a suitable candidate for the extraction of methanol, ethanol, 1-propanol, and 2-propanol from water. With some alcohols, this potential is more noticeable than with others. The potential of DMA as a separation agent is increasing in the following sequence: methanol < ethanol < 2-propanol < 1-propanol, and that also could be noticed from the selectivity values that also increase in this sequence. The UNIQUAC model proved as successful in correlating the LLE data.",
publisher = "Elsevier B.V.",
journal = "Journal of Molecular Liquids",
title = "Liquid-liquid equilibria of the ternary systems water + C1 – C3 alcohols + dimethyl adipate at 298.15 K and atmospheric pressure: Experimental data and modeling",
pages = "121542",
volume = "377",
doi = "10.1016/j.molliq.2023.121542"
}

Simić, Z. V., Radović, I. R., Stijepović, M. Z.,& Kijevčanin, M. Lj.. (2023). Liquid-liquid equilibria of the ternary systems water + C1 – C3 alcohols + dimethyl adipate at 298.15 K and atmospheric pressure: Experimental data and modeling. in Journal of Molecular Liquids
Elsevier B.V.., 377, 121542.
https://doi.org/10.1016/j.molliq.2023.121542

Simić ZV, Radović IR, Stijepović MZ, Kijevčanin ML. Liquid-liquid equilibria of the ternary systems water + C1 – C3 alcohols + dimethyl adipate at 298.15 K and atmospheric pressure: Experimental data and modeling. in Journal of Molecular Liquids. 2023;377:121542.
doi:10.1016/j.molliq.2023.121542 .

Simić, Zoran V., Radović, Ivona R., Stijepović, Mirko Z., Kijevčanin, Mirjana Lj., "Liquid-liquid equilibria of the ternary systems water + C1 – C3 alcohols + dimethyl adipate at 298.15 K and atmospheric pressure: Experimental data and modeling" in Journal of Molecular Liquids, 377 (2023):121542,
https://doi.org/10.1016/j.molliq.2023.121542 . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Nedeljković, Dragutin
AU  - Stajić-Trošić, Jasna
AU  - Stijepović, Mirko Z.
AU  - Alnouri, Sabla
AU  - Perišić, Srđan
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6371
AB  - Polymer-bonded magnets are a class of composite material that combines the magnetic properties of metal particles and the molding possibility of a polymeric matrix. This class of materials has shown huge potential for various applications in industry and engineering. Traditional research in this field has so far mainly focused on mechanical, electrical or magnetic properties of the composite, or on particle size and distribution. This examination of synthesized Nd-Fe-B-epoxy composite materials includes the mutual comparison of impact toughness, fatigue, and the structural, thermal, dynamic-mechanical, and magnetic behavior of materials with different content of magnetic Nd-Fe-B particles, in a wide range from 5 to 95 wt.%. This paper tests the influence of the Nd-Fe-B content on impacting the toughness of the composite material, as this relationship has not been tested before. The results show that impact toughness decreases, while magnetic properties increase, along with increasing content of Nd-Fe-B. Based on the observed trends, selected samples have been analyzed in terms of crack growth rate behavior. Analysis of the fracture surface morphology reveals the formation of a stable and homogeneous composite material. The synthesis route, the applied methods of characterization and analysis, and the comparison of the obtained results can provide a composite material with optimum properties for a specific purpose.
PB  - MDPI
T2  - Polymers
T1  - Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials
IS  - 8
SP  - 1894
VL  - 15
DO  - 10.3390/polym15081894
ER  - 

@article{
author = "Grujić, Aleksandar and Nedeljković, Dragutin and Stajić-Trošić, Jasna and Stijepović, Mirko Z. and Alnouri, Sabla and Perišić, Srđan",
year = "2023",
abstract = "Polymer-bonded magnets are a class of composite material that combines the magnetic properties of metal particles and the molding possibility of a polymeric matrix. This class of materials has shown huge potential for various applications in industry and engineering. Traditional research in this field has so far mainly focused on mechanical, electrical or magnetic properties of the composite, or on particle size and distribution. This examination of synthesized Nd-Fe-B-epoxy composite materials includes the mutual comparison of impact toughness, fatigue, and the structural, thermal, dynamic-mechanical, and magnetic behavior of materials with different content of magnetic Nd-Fe-B particles, in a wide range from 5 to 95 wt.%. This paper tests the influence of the Nd-Fe-B content on impacting the toughness of the composite material, as this relationship has not been tested before. The results show that impact toughness decreases, while magnetic properties increase, along with increasing content of Nd-Fe-B. Based on the observed trends, selected samples have been analyzed in terms of crack growth rate behavior. Analysis of the fracture surface morphology reveals the formation of a stable and homogeneous composite material. The synthesis route, the applied methods of characterization and analysis, and the comparison of the obtained results can provide a composite material with optimum properties for a specific purpose.",
publisher = "MDPI",
journal = "Polymers",
title = "Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials",
number = "8",
pages = "1894",
volume = "15",
doi = "10.3390/polym15081894"
}

Grujić, A., Nedeljković, D., Stajić-Trošić, J., Stijepović, M. Z., Alnouri, S.,& Perišić, S.. (2023). Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials. in Polymers
MDPI., 15(8), 1894.
https://doi.org/10.3390/polym15081894

Grujić A, Nedeljković D, Stajić-Trošić J, Stijepović MZ, Alnouri S, Perišić S. Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials. in Polymers. 2023;15(8):1894.
doi:10.3390/polym15081894 .

Grujić, Aleksandar, Nedeljković, Dragutin, Stajić-Trošić, Jasna, Stijepović, Mirko Z., Alnouri, Sabla, Perišić, Srđan, "Magneto-Mechanical and Thermal Properties of Nd-Fe-B-Epoxy-Bonded Composite Materials" in Polymers, 15, no. 8 (2023):1894,
https://doi.org/10.3390/polym15081894 . .

TY  - JOUR
AU  - Klaimi, Rachid
AU  - Alnouri, Sabla Y.
AU  - Zeaiter, Joseph
AU  - Stijepović, Mirko
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5288
AB  - This work investigates the design of optimal tri-generation systems for heat, power and water production via multiple fuel selections, thus aiming to reduce the reliance on fossil fuel consumption. Generally speaking, tri-generation systems are associated with high levels of carbon dioxide emissions to meet energy and water production requirements. Hence, a shift towards more renewable energy sources can assist in partially reducing the environmental damage associated with standard tri-generation operations. Since the switch from fossil fuels to renewable energy is very costly, hybrid energy systems were found an appealing solution that could allow a gradual reduction of carbon emissions. Hence, the novelty aspect of this work is the ability to generate cost-effective tri-generation systems that incorporate optimal hybrid energy selections and utility generation routes, subject to specific net carbon reduction targets (NCRT). As such, four different energy sources (natural gas, biomass, municipal solid waste (MSW) and Concentrated Solar Power (CSP) were investigated, together with five different routes for steam expansion and electricity production using a Mixed Integer Nonlinear Program (MINLP), including technical, economic and environmental constraints. In order to study the effect of different fuel selections, energy production operations, and water production routes on the performance of tri-generation systems, data from three different desalination plants (located in USA, Cyprus and Qatar) were used. The results obtained show that energy requirements for desalination greatly affects the order of selection of energy sources. In general, biomass was identified as the best alternative to replace natural gas at NCRT values below 40%. On the other hand, MSW incineration using grate-fired and fluidized bed boilers became more desirable for steam production when higher NCRT values were utilized. The water production costs (WPC) of a standalone CSP system integrated with each of the studied plants, having a feedwater salinity of 33.5, 41.8 and 45 g/L, were estimated at 1.739, 2.233 and 2.67 USD/m3, respectively. In addition, an average incremental increase of 5.5% in the WPC has been observed during seasons that provide the lowest solar availability values.
PB  - Elsevier Ltd
T2  - Energy Reports
T1  - Optimization of multiple fuel utilization options in Tri-generation systems
EP  - 784
SP  - 773
SP  - 784
VL  - 9
DO  - 10.1016/j.egyr.2022.12.025
ER  - 

@article{
author = "Klaimi, Rachid and Alnouri, Sabla Y. and Zeaiter, Joseph and Stijepović, Mirko",
year = "2023",
abstract = "This work investigates the design of optimal tri-generation systems for heat, power and water production via multiple fuel selections, thus aiming to reduce the reliance on fossil fuel consumption. Generally speaking, tri-generation systems are associated with high levels of carbon dioxide emissions to meet energy and water production requirements. Hence, a shift towards more renewable energy sources can assist in partially reducing the environmental damage associated with standard tri-generation operations. Since the switch from fossil fuels to renewable energy is very costly, hybrid energy systems were found an appealing solution that could allow a gradual reduction of carbon emissions. Hence, the novelty aspect of this work is the ability to generate cost-effective tri-generation systems that incorporate optimal hybrid energy selections and utility generation routes, subject to specific net carbon reduction targets (NCRT). As such, four different energy sources (natural gas, biomass, municipal solid waste (MSW) and Concentrated Solar Power (CSP) were investigated, together with five different routes for steam expansion and electricity production using a Mixed Integer Nonlinear Program (MINLP), including technical, economic and environmental constraints. In order to study the effect of different fuel selections, energy production operations, and water production routes on the performance of tri-generation systems, data from three different desalination plants (located in USA, Cyprus and Qatar) were used. The results obtained show that energy requirements for desalination greatly affects the order of selection of energy sources. In general, biomass was identified as the best alternative to replace natural gas at NCRT values below 40%. On the other hand, MSW incineration using grate-fired and fluidized bed boilers became more desirable for steam production when higher NCRT values were utilized. The water production costs (WPC) of a standalone CSP system integrated with each of the studied plants, having a feedwater salinity of 33.5, 41.8 and 45 g/L, were estimated at 1.739, 2.233 and 2.67 USD/m3, respectively. In addition, an average incremental increase of 5.5% in the WPC has been observed during seasons that provide the lowest solar availability values.",
publisher = "Elsevier Ltd",
journal = "Energy Reports",
title = "Optimization of multiple fuel utilization options in Tri-generation systems",
pages = "784-773-784",
volume = "9",
doi = "10.1016/j.egyr.2022.12.025"
}

Klaimi, R., Alnouri, S. Y., Zeaiter, J.,& Stijepović, M.. (2023). Optimization of multiple fuel utilization options in Tri-generation systems. in Energy Reports
Elsevier Ltd., 9, 773-784.
https://doi.org/10.1016/j.egyr.2022.12.025

Klaimi R, Alnouri SY, Zeaiter J, Stijepović M. Optimization of multiple fuel utilization options in Tri-generation systems. in Energy Reports. 2023;9:773-784.
doi:10.1016/j.egyr.2022.12.025 .

Klaimi, Rachid, Alnouri, Sabla Y., Zeaiter, Joseph, Stijepović, Mirko, "Optimization of multiple fuel utilization options in Tri-generation systems" in Energy Reports, 9 (2023):773-784,
https://doi.org/10.1016/j.egyr.2022.12.025 . .

Кијевчанин, М., Стијеповић, М., Радовић, И., Грозданић, Н.,& Иваниш, Г.. (2022). PYROLSIM – Софтвер за симулацију и оптимизацију пиролитичке пећи у фабрици  Етилен. 
Технолошко - металуршки факултет, Универзитет у Београду..
https://hdl.handle.net/21.15107/rcub_technorep_7385

Кијевчанин М, Стијеповић М, Радовић И, Грозданић Н, Иваниш Г. PYROLSIM – Софтвер за симулацију и оптимизацију пиролитичке пећи у фабрици  Етилен. 2022;.
https://hdl.handle.net/21.15107/rcub_technorep_7385 .

Кијевчанин, Мирјана, Стијеповић, Мирко, Радовић, Ивона, Грозданић, Никола, Иваниш, Горица, "PYROLSIM – Софтвер за симулацију и оптимизацију пиролитичке пећи у фабрици  Етилен" (2022),
https://hdl.handle.net/21.15107/rcub_technorep_7385 .

TY  - JOUR
AU  - Stijepović, Mirko
AU  - Alnouri, Sabla
AU  - Stijepović, Vladimir
AU  - Stajić-Trošić, Jasna
AU  - Grozdanić, Nikola
AU  - Grujić, Aleksandar
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5108
AB  - This paper introduces solute-solvent interactions onto a universal transport modeling approach that has been recently introduced for predicting RO membrane performance. The mathematical modeling framework utilizes chemical potential calculations rather than concentrations, and is based on the standard solution diffusion theory. Accounting for solute-solvent interactions were all based on a Maxwell-Stefan approach for reduced motion of particles in membrane pores. Overall, the proposed model is very effective in generating all the necessary parameters, especially for estimating the water permeability, as well as the various permeabilities associated with both, monovalent and divalent types of ion in the solution. Moreover, the effects of osmotic pressure on the respective species and water flux can be estimated. The proposed RO model was found to be very efficient in predicting the performance of various types of membranes, and its performance has been validated against available membrane performance data obtained from various sources. Since the attained model predictions are in very good agreement with actual membrane performance data, the proposed model can be considered as a very effective tool for use in commercial process simulator platforms.
PB  - Elsevier Ltd
T2  - Computers and Chemical Engineering
T1  - The development of a process simulator transport model for RO systems
SP  - 107783
VL  - 161
DO  - 10.1016/j.compchemeng.2022.107783
ER  - 

@article{
author = "Stijepović, Mirko and Alnouri, Sabla and Stijepović, Vladimir and Stajić-Trošić, Jasna and Grozdanić, Nikola and Grujić, Aleksandar",
year = "2022",
abstract = "This paper introduces solute-solvent interactions onto a universal transport modeling approach that has been recently introduced for predicting RO membrane performance. The mathematical modeling framework utilizes chemical potential calculations rather than concentrations, and is based on the standard solution diffusion theory. Accounting for solute-solvent interactions were all based on a Maxwell-Stefan approach for reduced motion of particles in membrane pores. Overall, the proposed model is very effective in generating all the necessary parameters, especially for estimating the water permeability, as well as the various permeabilities associated with both, monovalent and divalent types of ion in the solution. Moreover, the effects of osmotic pressure on the respective species and water flux can be estimated. The proposed RO model was found to be very efficient in predicting the performance of various types of membranes, and its performance has been validated against available membrane performance data obtained from various sources. Since the attained model predictions are in very good agreement with actual membrane performance data, the proposed model can be considered as a very effective tool for use in commercial process simulator platforms.",
publisher = "Elsevier Ltd",
journal = "Computers and Chemical Engineering",
title = "The development of a process simulator transport model for RO systems",
pages = "107783",
volume = "161",
doi = "10.1016/j.compchemeng.2022.107783"
}

Stijepović, M., Alnouri, S., Stijepović, V., Stajić-Trošić, J., Grozdanić, N.,& Grujić, A.. (2022). The development of a process simulator transport model for RO systems. in Computers and Chemical Engineering
Elsevier Ltd., 161, 107783.
https://doi.org/10.1016/j.compchemeng.2022.107783

Stijepović M, Alnouri S, Stijepović V, Stajić-Trošić J, Grozdanić N, Grujić A. The development of a process simulator transport model for RO systems. in Computers and Chemical Engineering. 2022;161:107783.
doi:10.1016/j.compchemeng.2022.107783 .

Stijepović, Mirko, Alnouri, Sabla, Stijepović, Vladimir, Stajić-Trošić, Jasna, Grozdanić, Nikola, Grujić, Aleksandar, "The development of a process simulator transport model for RO systems" in Computers and Chemical Engineering, 161 (2022):107783,
https://doi.org/10.1016/j.compchemeng.2022.107783 . .

TY  - JOUR
AU  - Klaimi, Rachid
AU  - Alnouri, Sabla Y.
AU  - Stijepović, Mirko
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5198
AB  - This work presents a novel Mixed-Integer Non-linear Program (MINLP) that accounts for the presence of multiple fuels in tri-generation systems. The key novelty of this work pertains to the use of hybrid energy systems in tri-generation processes, which are associated with multiple energy sources. In this work, different fuel sources such as natural gas, biomass and municipal solid waste (MSW) have been considered in the model, together with concentrated solar power (CSP), as a renewable energy option. The use of the aforementioned energy sources in tri-generation systems for heat, power and water production, were assessed simultaneously by the proposed model. CSP was utilized as the sole renewable energy option, due to the ease of obtaining both heat and power from such systems. The design of optimal tri-generation systems has been studied using the proposed model, under different conditions for carbon reduction. The model has been formulated using multi-period considerations, so as to account for seasonal variations. Moreover, the effect of several different operating parameters on the land use requirements of such systems were also investigated. The results indicate that despite the high cost of CSP, it was still found to be a highly desirable choice in the presence of carbon taxation. The water production cost of a hybrid natural gas-CSP tri-generation system was estimated at 1.277 USD/m3. This value could be 16% higher in the presence of carbon taxation. Additionally, biomass and solid waste options were found to be very promising energy outlets for desalination, especially in winter and fall seasons which have the lowest DNI values. The selection of these energy streams is also highly affected by the presence of carbon taxation policy. On the other hand, the incorporation of these two energy streams along with CSP could result in a fully local energy independent system with a water production cost of 1.44 and 1.537 USD/m3, respectively.
PB  - Elsevier Ltd
T2  - Energy
T1  - Investigation of seasonal variations and multiple fuel options in a novel tri-generation CSP integrated hybrid energy process
SP  - 125338
VL  - 261
DO  - 10.1016/j.energy.2022.125338
ER  - 

@article{
author = "Klaimi, Rachid and Alnouri, Sabla Y. and Stijepović, Mirko",
year = "2022",
abstract = "This work presents a novel Mixed-Integer Non-linear Program (MINLP) that accounts for the presence of multiple fuels in tri-generation systems. The key novelty of this work pertains to the use of hybrid energy systems in tri-generation processes, which are associated with multiple energy sources. In this work, different fuel sources such as natural gas, biomass and municipal solid waste (MSW) have been considered in the model, together with concentrated solar power (CSP), as a renewable energy option. The use of the aforementioned energy sources in tri-generation systems for heat, power and water production, were assessed simultaneously by the proposed model. CSP was utilized as the sole renewable energy option, due to the ease of obtaining both heat and power from such systems. The design of optimal tri-generation systems has been studied using the proposed model, under different conditions for carbon reduction. The model has been formulated using multi-period considerations, so as to account for seasonal variations. Moreover, the effect of several different operating parameters on the land use requirements of such systems were also investigated. The results indicate that despite the high cost of CSP, it was still found to be a highly desirable choice in the presence of carbon taxation. The water production cost of a hybrid natural gas-CSP tri-generation system was estimated at 1.277 USD/m3. This value could be 16% higher in the presence of carbon taxation. Additionally, biomass and solid waste options were found to be very promising energy outlets for desalination, especially in winter and fall seasons which have the lowest DNI values. The selection of these energy streams is also highly affected by the presence of carbon taxation policy. On the other hand, the incorporation of these two energy streams along with CSP could result in a fully local energy independent system with a water production cost of 1.44 and 1.537 USD/m3, respectively.",
publisher = "Elsevier Ltd",
journal = "Energy",
title = "Investigation of seasonal variations and multiple fuel options in a novel tri-generation CSP integrated hybrid energy process",
pages = "125338",
volume = "261",
doi = "10.1016/j.energy.2022.125338"
}

Klaimi, R., Alnouri, S. Y.,& Stijepović, M.. (2022). Investigation of seasonal variations and multiple fuel options in a novel tri-generation CSP integrated hybrid energy process. in Energy
Elsevier Ltd., 261, 125338.
https://doi.org/10.1016/j.energy.2022.125338

Klaimi R, Alnouri SY, Stijepović M. Investigation of seasonal variations and multiple fuel options in a novel tri-generation CSP integrated hybrid energy process. in Energy. 2022;261:125338.
doi:10.1016/j.energy.2022.125338 .

Klaimi, Rachid, Alnouri, Sabla Y., Stijepović, Mirko, "Investigation of seasonal variations and multiple fuel options in a novel tri-generation CSP integrated hybrid energy process" in Energy, 261 (2022):125338,
https://doi.org/10.1016/j.energy.2022.125338 . .

TY  - JOUR
AU  - Gane, Patrick
AU  - Ridgway, C. J.
AU  - Kijevčanin, Mirjana
AU  - Stijepović, M.
AU  - Uskoković, Petar
AU  - Barać, Nemanja
AU  - Dimić-Mišić, Katarina
AU  - Imani, M.
AU  - Janaćković, Đorđe
AU  - Barcelo, E.
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4913
AB  - A novel surface-flow filter has been designed to take advantage of a combination of both diffusion and lateral flow permeation, since active coatings, even if porous, tend to be far less permeable than through-flow constructs. The formation of a continuous coating layer virtually excludes any fluid transport into the coating other than by planar diffusion for gases or capillarity for liquids. This study considers the additional potential advantage of creating a pixelated/patterned coating, applied using a pin coater to form printed dots onto a highly permeable cellulose fibrous paper-like substrate. The coating-fine particulate calcium carbonate combined with micro-nanofibrillated cellulose as binder and humectant-reacts on exposure to NO2 gas to form calcium nitrate. Experimental results show an effective doubling of nitrate-forming efficiency using pixelated coating compared with a reference continuous layer coating. To establish an understanding of the comparative mechanisms of gas-coating contact, computational fluid dynamic modelling is used to generate surface pressure profiles combined with a pore network model of the coating to estimate theoretical fluid permeability and gas diffusion coefficients. Although pressure-driven permeation was calculated to be approximately two orders of magnitude less than the diffusive flow, it is concluded that patterned aerofoil pressure differential effects can reduce the impact of surface stagnant layering and so aid fluid transfer, boosting the diffusive transport, which in turn delivers greater contact efficiency based on the increased accessibility to the active coating.
T2  - Transport in Porous Media
T1  - Surface Patterning Increases Fluid Sorption Efficiency in Porous Reactive Coatings: A Model for Optimised Surface-Flow Filtration
EP  - 576
IS  - 3
SP  - 539
VL  - 138
DO  - 10.1007/s11242-021-01632-z
ER  - 

@article{
author = "Gane, Patrick and Ridgway, C. J. and Kijevčanin, Mirjana and Stijepović, M. and Uskoković, Petar and Barać, Nemanja and Dimić-Mišić, Katarina and Imani, M. and Janaćković, Đorđe and Barcelo, E.",
year = "2021",
abstract = "A novel surface-flow filter has been designed to take advantage of a combination of both diffusion and lateral flow permeation, since active coatings, even if porous, tend to be far less permeable than through-flow constructs. The formation of a continuous coating layer virtually excludes any fluid transport into the coating other than by planar diffusion for gases or capillarity for liquids. This study considers the additional potential advantage of creating a pixelated/patterned coating, applied using a pin coater to form printed dots onto a highly permeable cellulose fibrous paper-like substrate. The coating-fine particulate calcium carbonate combined with micro-nanofibrillated cellulose as binder and humectant-reacts on exposure to NO2 gas to form calcium nitrate. Experimental results show an effective doubling of nitrate-forming efficiency using pixelated coating compared with a reference continuous layer coating. To establish an understanding of the comparative mechanisms of gas-coating contact, computational fluid dynamic modelling is used to generate surface pressure profiles combined with a pore network model of the coating to estimate theoretical fluid permeability and gas diffusion coefficients. Although pressure-driven permeation was calculated to be approximately two orders of magnitude less than the diffusive flow, it is concluded that patterned aerofoil pressure differential effects can reduce the impact of surface stagnant layering and so aid fluid transfer, boosting the diffusive transport, which in turn delivers greater contact efficiency based on the increased accessibility to the active coating.",
journal = "Transport in Porous Media",
title = "Surface Patterning Increases Fluid Sorption Efficiency in Porous Reactive Coatings: A Model for Optimised Surface-Flow Filtration",
pages = "576-539",
number = "3",
volume = "138",
doi = "10.1007/s11242-021-01632-z"
}

Gane, P., Ridgway, C. J., Kijevčanin, M., Stijepović, M., Uskoković, P., Barać, N., Dimić-Mišić, K., Imani, M., Janaćković, Đ.,& Barcelo, E.. (2021). Surface Patterning Increases Fluid Sorption Efficiency in Porous Reactive Coatings: A Model for Optimised Surface-Flow Filtration. in Transport in Porous Media, 138(3), 539-576.
https://doi.org/10.1007/s11242-021-01632-z

Gane P, Ridgway CJ, Kijevčanin M, Stijepović M, Uskoković P, Barać N, Dimić-Mišić K, Imani M, Janaćković Đ, Barcelo E. Surface Patterning Increases Fluid Sorption Efficiency in Porous Reactive Coatings: A Model for Optimised Surface-Flow Filtration. in Transport in Porous Media. 2021;138(3):539-576.
doi:10.1007/s11242-021-01632-z .

Gane, Patrick, Ridgway, C. J., Kijevčanin, Mirjana, Stijepović, M., Uskoković, Petar, Barać, Nemanja, Dimić-Mišić, Katarina, Imani, M., Janaćković, Đorđe, Barcelo, E., "Surface Patterning Increases Fluid Sorption Efficiency in Porous Reactive Coatings: A Model for Optimised Surface-Flow Filtration" in Transport in Porous Media, 138, no. 3 (2021):539-576,
https://doi.org/10.1007/s11242-021-01632-z . .

TY  - CONF
AU  - Kyriakides, Alexios-Spyridon
AU  - Champilomatis, Vassilis
AU  - Kousidis, Vergis
AU  - Hassan, Ibrahim
AU  - Papadopoulos, Athanasios I.
AU  - Giannakakis, Alexandros
AU  - Stijepović, Mirko
AU  - Seferlis, Panos
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4836
AB  - Absorption Refrigeration (ABR) has been widely considered as an environmentally benign cooling process. ABR employs a working fluid (WF) mixture to extract heat for cooling achieved through a series of phase changes within different equipment. Organic fluids are promising WF candidates as they avoid disadvantages of other types of fluids, such as crystallization, toxicity etc. Current studies use very few selection criteria (e.g. COP), while they completely omit the structure and operation of the rectifier after the generator and its impact on ABR performance. Only very few fluids are considered in each study, while sustainability-related fluid indicators are never considered. Our aim is to assess the performance of numerous organic WF using a systematic approach considering multiple different indicators pertaining to operating ABR performance and fluid sustainability, while employing a properly modelled rectifier in a single effect ABR. The latter includes the number of separation stages and the distillate purity as decision parameters together with the mixture composition and mass flowrates of its components, in an optimum screening formulation. A multi-criteria assessment method identifies a Pareto front that highlights performance trade-offs among important indicators. The latter include the ABR COP and exergertic efficiency, the number of stripping stages, the mass flowrates of the mixture components, the cycle high pressure and the stripping distillate-to-feed ratio. Sustainability indicators include toxicity, flammability, biodegradation probability ozone depletion and global warming potentials. The proposed approach is illustrated for 36 mixtures containing HCFC and HFC refrigerants with various absorbents and the results are compared with NH3/H2O, which is a commercially used ABR fluid. It is observed that R32-DMF (dimethylformamide) exhibits good performance trade-offs.
C3  - Ashrae Transactions 2021, Vol 127, Pt 1
T1  - Systematic Assessment of Working Fluid Mixtures for Absorption Refrigeration Based on Process and Sustainability Indicators
EP  - 345
SP  - 337
VL  - 127
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4836
ER  - 

@conference{
author = "Kyriakides, Alexios-Spyridon and Champilomatis, Vassilis and Kousidis, Vergis and Hassan, Ibrahim and Papadopoulos, Athanasios I. and Giannakakis, Alexandros and Stijepović, Mirko and Seferlis, Panos",
year = "2021",
abstract = "Absorption Refrigeration (ABR) has been widely considered as an environmentally benign cooling process. ABR employs a working fluid (WF) mixture to extract heat for cooling achieved through a series of phase changes within different equipment. Organic fluids are promising WF candidates as they avoid disadvantages of other types of fluids, such as crystallization, toxicity etc. Current studies use very few selection criteria (e.g. COP), while they completely omit the structure and operation of the rectifier after the generator and its impact on ABR performance. Only very few fluids are considered in each study, while sustainability-related fluid indicators are never considered. Our aim is to assess the performance of numerous organic WF using a systematic approach considering multiple different indicators pertaining to operating ABR performance and fluid sustainability, while employing a properly modelled rectifier in a single effect ABR. The latter includes the number of separation stages and the distillate purity as decision parameters together with the mixture composition and mass flowrates of its components, in an optimum screening formulation. A multi-criteria assessment method identifies a Pareto front that highlights performance trade-offs among important indicators. The latter include the ABR COP and exergertic efficiency, the number of stripping stages, the mass flowrates of the mixture components, the cycle high pressure and the stripping distillate-to-feed ratio. Sustainability indicators include toxicity, flammability, biodegradation probability ozone depletion and global warming potentials. The proposed approach is illustrated for 36 mixtures containing HCFC and HFC refrigerants with various absorbents and the results are compared with NH3/H2O, which is a commercially used ABR fluid. It is observed that R32-DMF (dimethylformamide) exhibits good performance trade-offs.",
journal = "Ashrae Transactions 2021, Vol 127, Pt 1",
title = "Systematic Assessment of Working Fluid Mixtures for Absorption Refrigeration Based on Process and Sustainability Indicators",
pages = "345-337",
volume = "127",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4836"
}

Kyriakides, A., Champilomatis, V., Kousidis, V., Hassan, I., Papadopoulos, A. I., Giannakakis, A., Stijepović, M.,& Seferlis, P.. (2021). Systematic Assessment of Working Fluid Mixtures for Absorption Refrigeration Based on Process and Sustainability Indicators. in Ashrae Transactions 2021, Vol 127, Pt 1, 127, 337-345.
https://hdl.handle.net/21.15107/rcub_technorep_4836

Kyriakides A, Champilomatis V, Kousidis V, Hassan I, Papadopoulos AI, Giannakakis A, Stijepović M, Seferlis P. Systematic Assessment of Working Fluid Mixtures for Absorption Refrigeration Based on Process and Sustainability Indicators. in Ashrae Transactions 2021, Vol 127, Pt 1. 2021;127:337-345.
https://hdl.handle.net/21.15107/rcub_technorep_4836 .

Kyriakides, Alexios-Spyridon, Champilomatis, Vassilis, Kousidis, Vergis, Hassan, Ibrahim, Papadopoulos, Athanasios I., Giannakakis, Alexandros, Stijepović, Mirko, Seferlis, Panos, "Systematic Assessment of Working Fluid Mixtures for Absorption Refrigeration Based on Process and Sustainability Indicators" in Ashrae Transactions 2021, Vol 127, Pt 1, 127 (2021):337-345,
https://hdl.handle.net/21.15107/rcub_technorep_4836 .

TY  - JOUR
AU  - Putic, Lana
AU  - Alnouri, Sabla
AU  - Stijepovic, Vladimir
AU  - Stajic-Trosic, Jasna
AU  - Grujic, Aleksandar
AU  - Stijepović, Mirko
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4892
AB  - This paper presents a new transport model for reverse osmosis (RO) systems, which combines irreversible thermodynamics, together with solution-diffusion theory. The simplifications adopted by the classical theory for solution-diffusion mechanisms have been found to be quite lacking when it comes to predicting the separation of multicomponent mixtures. The presented model accounts for multicomponent computations through the application of thermodynamic property models, as a means to predict the various interactions amongst the species that are present in solution. The developed transport model is relatively easy to implement, and can be utilized alongside existing equipment and thermodynamic property models. The applicability of the model presented in this paper has been tested on three different case studies, including a case that investigates single component behavior and a case that investigates multicomponent behavior The proposed model shows very good agreement with experimental results .
T2  - Computers & Chemical Engineering
T1  - A universal transportation model for reverse osmosis systems
VL  - 148
DO  - 10.1016/j.compchemeng.2021.107264
ER  - 

@article{
author = "Putic, Lana and Alnouri, Sabla and Stijepovic, Vladimir and Stajic-Trosic, Jasna and Grujic, Aleksandar and Stijepović, Mirko",
year = "2021",
abstract = "This paper presents a new transport model for reverse osmosis (RO) systems, which combines irreversible thermodynamics, together with solution-diffusion theory. The simplifications adopted by the classical theory for solution-diffusion mechanisms have been found to be quite lacking when it comes to predicting the separation of multicomponent mixtures. The presented model accounts for multicomponent computations through the application of thermodynamic property models, as a means to predict the various interactions amongst the species that are present in solution. The developed transport model is relatively easy to implement, and can be utilized alongside existing equipment and thermodynamic property models. The applicability of the model presented in this paper has been tested on three different case studies, including a case that investigates single component behavior and a case that investigates multicomponent behavior The proposed model shows very good agreement with experimental results .",
journal = "Computers & Chemical Engineering",
title = "A universal transportation model for reverse osmosis systems",
volume = "148",
doi = "10.1016/j.compchemeng.2021.107264"
}

Putic, L., Alnouri, S., Stijepovic, V., Stajic-Trosic, J., Grujic, A.,& Stijepović, M.. (2021). A universal transportation model for reverse osmosis systems. in Computers & Chemical Engineering, 148.
https://doi.org/10.1016/j.compchemeng.2021.107264

Putic L, Alnouri S, Stijepovic V, Stajic-Trosic J, Grujic A, Stijepović M. A universal transportation model for reverse osmosis systems. in Computers & Chemical Engineering. 2021;148.
doi:10.1016/j.compchemeng.2021.107264 .

Putic, Lana, Alnouri, Sabla, Stijepovic, Vladimir, Stajic-Trosic, Jasna, Grujic, Aleksandar, Stijepović, Mirko, "A universal transportation model for reverse osmosis systems" in Computers & Chemical Engineering, 148 (2021),
https://doi.org/10.1016/j.compchemeng.2021.107264 . .

TY  - JOUR
AU  - Klaimi, Rachid
AU  - Alnouri, Sabla Y.
AU  - Stijepović, Mirko
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4834
AB  - In this work, a concentrated solar power (CSP) tri-generation system that is capable of the simultaneous production of steam, power and freshwater is introduced. The abundantly available direct normal irradiance can potentially allow concentrated solar power systems to become major energy contributors in the desalination market. Since CSPs can generate both thermal and electrical energy, they have been found to be excellent candidates for sustainable operation of large scale desalination systems, in the long term. This paper presents a mathematical model in the form of a Mixed-Integer Nonlinear program (MINLP), which involves a tri-generation system for combined steam and power production, primarily using solar energy to operate steam turbines. Moreover, the option of freshwater production using various desalination technology choices, such as reverse osmosis (RO) and multi-stage flashing (MSF), is also accounted for within the model. Hence, the proposed model offers a very convenient and eco-friendly tri-generation route for steam, power and water production. The proposed systematic method was tested using different feedwater salinities, as well as using different product water flowrates, and electricity prices. According to the results obtained, the water production cost (WPC) associated with a water salinity of 25 g/L resulted in a value of 1.83 USD/m3, which is significantly lower than the WPCs obtained at 35 g/L (2.09 USD/m3) and 45 g/L (2.24 USD/m3). Moreover, a large scale tri-generation system with an overall production capacity of 100,000 m3/d of freshwater resulted in a 60% reduction of the attained WPC value, when compared against a small scale system with a production capacity of 10,000 m3/d of freshwater. The option of exporting electrical energy to the grid using the proposed tri-generation system was also investigated, and a sensitivity analysis was conducted by varying the price of electrical energy. The attained breakeven energy prices were 0.74, 0.79 and 0.82 cent/kWh at 25, 35 and 45 g/L of feedwater salinity, respectively.
T2  - Energy Conversion and Management
T1  - Design and thermo-economic evaluation of an integrated concentrated solar power-Desalination tri-generation system
VL  - 249
DO  - 10.1016/j.enconman.2021.114865
ER  - 

@article{
author = "Klaimi, Rachid and Alnouri, Sabla Y. and Stijepović, Mirko",
year = "2021",
abstract = "In this work, a concentrated solar power (CSP) tri-generation system that is capable of the simultaneous production of steam, power and freshwater is introduced. The abundantly available direct normal irradiance can potentially allow concentrated solar power systems to become major energy contributors in the desalination market. Since CSPs can generate both thermal and electrical energy, they have been found to be excellent candidates for sustainable operation of large scale desalination systems, in the long term. This paper presents a mathematical model in the form of a Mixed-Integer Nonlinear program (MINLP), which involves a tri-generation system for combined steam and power production, primarily using solar energy to operate steam turbines. Moreover, the option of freshwater production using various desalination technology choices, such as reverse osmosis (RO) and multi-stage flashing (MSF), is also accounted for within the model. Hence, the proposed model offers a very convenient and eco-friendly tri-generation route for steam, power and water production. The proposed systematic method was tested using different feedwater salinities, as well as using different product water flowrates, and electricity prices. According to the results obtained, the water production cost (WPC) associated with a water salinity of 25 g/L resulted in a value of 1.83 USD/m3, which is significantly lower than the WPCs obtained at 35 g/L (2.09 USD/m3) and 45 g/L (2.24 USD/m3). Moreover, a large scale tri-generation system with an overall production capacity of 100,000 m3/d of freshwater resulted in a 60% reduction of the attained WPC value, when compared against a small scale system with a production capacity of 10,000 m3/d of freshwater. The option of exporting electrical energy to the grid using the proposed tri-generation system was also investigated, and a sensitivity analysis was conducted by varying the price of electrical energy. The attained breakeven energy prices were 0.74, 0.79 and 0.82 cent/kWh at 25, 35 and 45 g/L of feedwater salinity, respectively.",
journal = "Energy Conversion and Management",
title = "Design and thermo-economic evaluation of an integrated concentrated solar power-Desalination tri-generation system",
volume = "249",
doi = "10.1016/j.enconman.2021.114865"
}

Klaimi, R., Alnouri, S. Y.,& Stijepović, M.. (2021). Design and thermo-economic evaluation of an integrated concentrated solar power-Desalination tri-generation system. in Energy Conversion and Management, 249.
https://doi.org/10.1016/j.enconman.2021.114865

Klaimi R, Alnouri SY, Stijepović M. Design and thermo-economic evaluation of an integrated concentrated solar power-Desalination tri-generation system. in Energy Conversion and Management. 2021;249.
doi:10.1016/j.enconman.2021.114865 .

Klaimi, Rachid, Alnouri, Sabla Y., Stijepović, Mirko, "Design and thermo-economic evaluation of an integrated concentrated solar power-Desalination tri-generation system" in Energy Conversion and Management, 249 (2021),
https://doi.org/10.1016/j.enconman.2021.114865 . .

TY  - JOUR
AU  - Ilić-Pajić, Jovana
AU  - Ivaniš, Gorica
AU  - Radović, Ivona
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Stijepović, Mirko
AU  - Kijevčanin, Mirjana
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4474
AB  - In order to reduce negative influence of fossil fuels on environment, use of various renewable resources is highly promoted. Terpenes, naturally occurring in plants, can be added to petroleum fuel as its substitute up to a certain share. Thermodynamic properties of a fuel under high pressure and moderate temperature conditions are of significant importance for engine efficiency. This work reports density measurements of pure p-cymene, alpha-pinene, limonene and citral at temperatures (293.15-413.15) K and pressures (0.1-60) MPa, applying an Anton Paar DMA HP measuring cell. Density data were fitted by modified Tammann-Tait equation where the absolute average percentage deviation between measured and calculated densities was about 0.010%. The obtained parameters were used to estimate the isothermal compressibility, the isobaric thermal expansion coefficient, the internal pressure, and the difference between specific heat capacity at constant pressure and at constant volume. For examined compounds, all thermodynamic properties, except the internal pressure, decrease with pressure rise along an isotherm and increase as temperature increases at a constant pressure. The intersection point of isotherms for the isobaric thermal expansion coefficient for pure citral was registered at pressure 47 MPa, while for other analyzed terpenes the intersection point is above 60 MPa, outside the measurements pressure range.
PB  - Academic Press Ltd- Elsevier Science Ltd, London
T2  - Journal of Chemical Thermodynamics
T1  - Experimental densities and derived thermodynamic properties of pure p-cymene, alpha-pinene, limonene and citral under high pressure conditions
VL  - 144
DO  - 10.1016/j.jct.2020.106065
ER  - 

@article{
author = "Ilić-Pajić, Jovana and Ivaniš, Gorica and Radović, Ivona and Grujić, Aleksandar and Stajić-Trošić, Jasna and Stijepović, Mirko and Kijevčanin, Mirjana",
year = "2020",
abstract = "In order to reduce negative influence of fossil fuels on environment, use of various renewable resources is highly promoted. Terpenes, naturally occurring in plants, can be added to petroleum fuel as its substitute up to a certain share. Thermodynamic properties of a fuel under high pressure and moderate temperature conditions are of significant importance for engine efficiency. This work reports density measurements of pure p-cymene, alpha-pinene, limonene and citral at temperatures (293.15-413.15) K and pressures (0.1-60) MPa, applying an Anton Paar DMA HP measuring cell. Density data were fitted by modified Tammann-Tait equation where the absolute average percentage deviation between measured and calculated densities was about 0.010%. The obtained parameters were used to estimate the isothermal compressibility, the isobaric thermal expansion coefficient, the internal pressure, and the difference between specific heat capacity at constant pressure and at constant volume. For examined compounds, all thermodynamic properties, except the internal pressure, decrease with pressure rise along an isotherm and increase as temperature increases at a constant pressure. The intersection point of isotherms for the isobaric thermal expansion coefficient for pure citral was registered at pressure 47 MPa, while for other analyzed terpenes the intersection point is above 60 MPa, outside the measurements pressure range.",
publisher = "Academic Press Ltd- Elsevier Science Ltd, London",
journal = "Journal of Chemical Thermodynamics",
title = "Experimental densities and derived thermodynamic properties of pure p-cymene, alpha-pinene, limonene and citral under high pressure conditions",
volume = "144",
doi = "10.1016/j.jct.2020.106065"
}

Ilić-Pajić, J., Ivaniš, G., Radović, I., Grujić, A., Stajić-Trošić, J., Stijepović, M.,& Kijevčanin, M.. (2020). Experimental densities and derived thermodynamic properties of pure p-cymene, alpha-pinene, limonene and citral under high pressure conditions. in Journal of Chemical Thermodynamics
Academic Press Ltd- Elsevier Science Ltd, London., 144.
https://doi.org/10.1016/j.jct.2020.106065

Ilić-Pajić J, Ivaniš G, Radović I, Grujić A, Stajić-Trošić J, Stijepović M, Kijevčanin M. Experimental densities and derived thermodynamic properties of pure p-cymene, alpha-pinene, limonene and citral under high pressure conditions. in Journal of Chemical Thermodynamics. 2020;144.
doi:10.1016/j.jct.2020.106065 .

Ilić-Pajić, Jovana, Ivaniš, Gorica, Radović, Ivona, Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko, Kijevčanin, Mirjana, "Experimental densities and derived thermodynamic properties of pure p-cymene, alpha-pinene, limonene and citral under high pressure conditions" in Journal of Chemical Thermodynamics, 144 (2020),
https://doi.org/10.1016/j.jct.2020.106065 . .

TY  - JOUR
AU  - Alnouri, Sabla Y.
AU  - Kijevčanin, Mirjana
AU  - Stijepović, Mirko
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4760
AB  - This paper utilizes a stochastic optimization approach using genetic algorithms, for conducting rigorous pipe size sensitivity assessments onto the design of pressure relief networks. By sampling high performance candidates, only the finest options can survive. The pressure relief network system that was investigated in this work was previously reported in literature. The problem is constrained and involves minimizing a cost objective function that evaluates the overall network performance, in which the best pipe size combination should be selected for each segment within the network. The overall goal of this paper was to seek cost-effective designs for the pressure relief piping system by exploring different ranges of pipe diameters that are available for each segment in the network and comparing how the overall design of the system is affected, when the number of pipe size options to select from is varied.
T2  - Hemijska industrija
T1  - Pipe size sensitivity in pressure relief networks using genetic algorithms
EP  - 364
IS  - 6
SP  - 351
VL  - 74
DO  - 10.2298/HEMIND200709032A
ER  - 

@article{
author = "Alnouri, Sabla Y. and Kijevčanin, Mirjana and Stijepović, Mirko",
year = "2020",
abstract = "This paper utilizes a stochastic optimization approach using genetic algorithms, for conducting rigorous pipe size sensitivity assessments onto the design of pressure relief networks. By sampling high performance candidates, only the finest options can survive. The pressure relief network system that was investigated in this work was previously reported in literature. The problem is constrained and involves minimizing a cost objective function that evaluates the overall network performance, in which the best pipe size combination should be selected for each segment within the network. The overall goal of this paper was to seek cost-effective designs for the pressure relief piping system by exploring different ranges of pipe diameters that are available for each segment in the network and comparing how the overall design of the system is affected, when the number of pipe size options to select from is varied.",
journal = "Hemijska industrija",
title = "Pipe size sensitivity in pressure relief networks using genetic algorithms",
pages = "364-351",
number = "6",
volume = "74",
doi = "10.2298/HEMIND200709032A"
}

Alnouri, S. Y., Kijevčanin, M.,& Stijepović, M.. (2020). Pipe size sensitivity in pressure relief networks using genetic algorithms. in Hemijska industrija, 74(6), 351-364.
https://doi.org/10.2298/HEMIND200709032A

Alnouri SY, Kijevčanin M, Stijepović M. Pipe size sensitivity in pressure relief networks using genetic algorithms. in Hemijska industrija. 2020;74(6):351-364.
doi:10.2298/HEMIND200709032A .

Alnouri, Sabla Y., Kijevčanin, Mirjana, Stijepović, Mirko, "Pipe size sensitivity in pressure relief networks using genetic algorithms" in Hemijska industrija, 74, no. 6 (2020):351-364,
https://doi.org/10.2298/HEMIND200709032A . .

TY  - JOUR
AU  - Ilić-Pajić, Jovana
AU  - Stijepović, Mirko
AU  - Ivaniš, Gorica
AU  - Radović, Ivona
AU  - Stajić-Trošić, Jasna
AU  - Kijevčanin, Mirjana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4022
AB  - SAFT equations of state have been widely used for the determination of different thermo-physical and phase equilibria properties. In order to use these equations as predictive models it is necessary to calculate the model parameters. In this work CK-SAFT and PC-SAFT equations of state were applied for the correlation of pure compounds densities in the wide ranges of temperature and pressure (288.15-413.15 K and 0.1-60 MPa, respectively). The calculations of densities for n-hexane, n-heptane, n-octane, toluene, dichloromethane and ethanol, under high pressure conditions, were performed with the new sets of parameters determined in this paper by CK-SAFT and PC-SAFT. Very good agreement between experimental and calculated density values was achieved, having absolute average percentage deviations lower than 0.5 %.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations
EP  - 343
IS  - 3
SP  - 331
VL  - 83
DO  - 10.2298/JSC170613096P
ER  - 

@article{
author = "Ilić-Pajić, Jovana and Stijepović, Mirko and Ivaniš, Gorica and Radović, Ivona and Stajić-Trošić, Jasna and Kijevčanin, Mirjana",
year = "2018",
abstract = "SAFT equations of state have been widely used for the determination of different thermo-physical and phase equilibria properties. In order to use these equations as predictive models it is necessary to calculate the model parameters. In this work CK-SAFT and PC-SAFT equations of state were applied for the correlation of pure compounds densities in the wide ranges of temperature and pressure (288.15-413.15 K and 0.1-60 MPa, respectively). The calculations of densities for n-hexane, n-heptane, n-octane, toluene, dichloromethane and ethanol, under high pressure conditions, were performed with the new sets of parameters determined in this paper by CK-SAFT and PC-SAFT. Very good agreement between experimental and calculated density values was achieved, having absolute average percentage deviations lower than 0.5 %.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations",
pages = "343-331",
number = "3",
volume = "83",
doi = "10.2298/JSC170613096P"
}

Ilić-Pajić, J., Stijepović, M., Ivaniš, G., Radović, I., Stajić-Trošić, J.,& Kijevčanin, M.. (2018). Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 83(3), 331-343.
https://doi.org/10.2298/JSC170613096P

Ilić-Pajić J, Stijepović M, Ivaniš G, Radović I, Stajić-Trošić J, Kijevčanin M. Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations. in Journal of the Serbian Chemical Society. 2018;83(3):331-343.
doi:10.2298/JSC170613096P .

Ilić-Pajić, Jovana, Stijepović, Mirko, Ivaniš, Gorica, Radović, Ivona, Stajić-Trošić, Jasna, Kijevčanin, Mirjana, "Modelling of pure components high pressures densities using CK-SAFT and PC-SAFT equations" in Journal of the Serbian Chemical Society, 83, no. 3 (2018):331-343,
https://doi.org/10.2298/JSC170613096P . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Ćosović, Vladan
AU  - Stajić-Trošić, Jasna
AU  - Ćosović, Aleksandar
AU  - Stijepović, Mirko
AU  - Putić, Lana S.
AU  - Žák, Tomáš
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3914
AB  - In this study, electrospinning combined with sol-gel technique is applied in order to produce magnetic nickel ferrite (Ni-ferrite) nanofibers. The prepared Ni-ferrite gel was mixed with poly(vinylpyrrolidone) (PVP) solution which was used as a spinning aid to enable spinnability of the mixture. Structural and morphological characteristics of the asspun ferrite gel/PVP composite web structure and calcinated Ni-ferrite nanofibers were analyzed using scanning electron microscopy (SEM). Phase composition analysis was carried out by Fourier-transform infrared (FT-IR) spectroscopy, X-Ray diffraction analysis (XRD) and Fe-57 Mossbauer spectroscopy (MS). The obtained results suggest that the pure nanocrystalline NiFe2O4 dense mat to the almost coral-like structure of fibers with diameters ranging from hundreds of nanometers to few micrometers was obtained. The results of MS analysis revealed the existence of a crystallite size distribution within the material as well as the existence of a superparamagnetic fraction with very small crystallite sizes ( lt 13nm). Magnetic behavior of the obtained material at elevated temperatures was also scrutinized using thermomagnetic measurements (TM) up to 800 degrees C.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Synthesis of nife2o4 nanofibers by joint sol-gel and electrospinning technique
EP  - 180
IS  - 3
SP  - 173
VL  - 24
DO  - 10.30544/387
ER  - 

@article{
author = "Grujić, Aleksandar and Ćosović, Vladan and Stajić-Trošić, Jasna and Ćosović, Aleksandar and Stijepović, Mirko and Putić, Lana S. and Žák, Tomáš",
year = "2018",
abstract = "In this study, electrospinning combined with sol-gel technique is applied in order to produce magnetic nickel ferrite (Ni-ferrite) nanofibers. The prepared Ni-ferrite gel was mixed with poly(vinylpyrrolidone) (PVP) solution which was used as a spinning aid to enable spinnability of the mixture. Structural and morphological characteristics of the asspun ferrite gel/PVP composite web structure and calcinated Ni-ferrite nanofibers were analyzed using scanning electron microscopy (SEM). Phase composition analysis was carried out by Fourier-transform infrared (FT-IR) spectroscopy, X-Ray diffraction analysis (XRD) and Fe-57 Mossbauer spectroscopy (MS). The obtained results suggest that the pure nanocrystalline NiFe2O4 dense mat to the almost coral-like structure of fibers with diameters ranging from hundreds of nanometers to few micrometers was obtained. The results of MS analysis revealed the existence of a crystallite size distribution within the material as well as the existence of a superparamagnetic fraction with very small crystallite sizes ( lt 13nm). Magnetic behavior of the obtained material at elevated temperatures was also scrutinized using thermomagnetic measurements (TM) up to 800 degrees C.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Synthesis of nife2o4 nanofibers by joint sol-gel and electrospinning technique",
pages = "180-173",
number = "3",
volume = "24",
doi = "10.30544/387"
}

Grujić, A., Ćosović, V., Stajić-Trošić, J., Ćosović, A., Stijepović, M., Putić, L. S.,& Žák, T.. (2018). Synthesis of nife2o4 nanofibers by joint sol-gel and electrospinning technique. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 24(3), 173-180.
https://doi.org/10.30544/387

Grujić A, Ćosović V, Stajić-Trošić J, Ćosović A, Stijepović M, Putić LS, Žák T. Synthesis of nife2o4 nanofibers by joint sol-gel and electrospinning technique. in Metallurgical & Materials Engineering. 2018;24(3):173-180.
doi:10.30544/387 .

Grujić, Aleksandar, Ćosović, Vladan, Stajić-Trošić, Jasna, Ćosović, Aleksandar, Stijepović, Mirko, Putić, Lana S., Žák, Tomáš, "Synthesis of nife2o4 nanofibers by joint sol-gel and electrospinning technique" in Metallurgical & Materials Engineering, 24, no. 3 (2018):173-180,
https://doi.org/10.30544/387 . .

TY  - JOUR
AU  - Polovina, Sasa
AU  - Vojtech, Merva
AU  - Dejanović, Igor
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4001
AB  - Continuous catalytic reforming (CCR) is known to convert refinery naphtha to a high-octane liquid product, also known as the reformate. In this paper, a First Principle Reaction Section Model for a CCR process is presented. Even though CCR is a well-established technology, the application of advanced, real-time optimization techniques that are able to quickly respond to any imposed changes onto the process, are necessary in the refinery business. This becomes particularly important as a result of changes in profit margin, changes in operating cost, and the introduction of new environmental legislations. Hence, we present a kinetic model for the CCR process using the so-called "lumped" concept. The reactors have been modeled using a quasi-steady-state approach. The unknown model parameters have been estimated by bench marking the First Principle Reaction Section results with a commercial CCR process owned by the Hungarian Oil and Gas Public Limited Company (INA-MOL). The proposed model has been tested and compared to data obtained from an existing CCR plant. The predictions of the model were found to be in good agreement with the experimental data. The relative absolute errors between the measured and model estimated variables have been found to be lower than 2%. The relative absolute error associated with the required fired heater duties were less than 1.0%. Simulating the reaction section of the CCR process requires less than 0.1 s of CPU time, which clearly indicates that this model can be very suitable for performing optimization studies. Moreover, this study shows that, although there is fluctuation in the composition of feedstock, the lumped kinetic approach was capable to predict the behavior of the CCR process well.
PB  - Amer Chemical Soc, Washington
T2  - Energy & Fuels
T1  - Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer
EP  - 6396
IS  - 5
SP  - 6378
VL  - 32
DO  - 10.1021/acs.energyfuels.7b03897
ER  - 

@article{
author = "Polovina, Sasa and Vojtech, Merva and Dejanović, Igor and Grujić, Aleksandar and Stijepović, Mirko",
year = "2018",
abstract = "Continuous catalytic reforming (CCR) is known to convert refinery naphtha to a high-octane liquid product, also known as the reformate. In this paper, a First Principle Reaction Section Model for a CCR process is presented. Even though CCR is a well-established technology, the application of advanced, real-time optimization techniques that are able to quickly respond to any imposed changes onto the process, are necessary in the refinery business. This becomes particularly important as a result of changes in profit margin, changes in operating cost, and the introduction of new environmental legislations. Hence, we present a kinetic model for the CCR process using the so-called "lumped" concept. The reactors have been modeled using a quasi-steady-state approach. The unknown model parameters have been estimated by bench marking the First Principle Reaction Section results with a commercial CCR process owned by the Hungarian Oil and Gas Public Limited Company (INA-MOL). The proposed model has been tested and compared to data obtained from an existing CCR plant. The predictions of the model were found to be in good agreement with the experimental data. The relative absolute errors between the measured and model estimated variables have been found to be lower than 2%. The relative absolute error associated with the required fired heater duties were less than 1.0%. Simulating the reaction section of the CCR process requires less than 0.1 s of CPU time, which clearly indicates that this model can be very suitable for performing optimization studies. Moreover, this study shows that, although there is fluctuation in the composition of feedstock, the lumped kinetic approach was capable to predict the behavior of the CCR process well.",
publisher = "Amer Chemical Soc, Washington",
journal = "Energy & Fuels",
title = "Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer",
pages = "6396-6378",
number = "5",
volume = "32",
doi = "10.1021/acs.energyfuels.7b03897"
}

Polovina, S., Vojtech, M., Dejanović, I., Grujić, A.,& Stijepović, M.. (2018). Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer. in Energy & Fuels
Amer Chemical Soc, Washington., 32(5), 6378-6396.
https://doi.org/10.1021/acs.energyfuels.7b03897

Polovina S, Vojtech M, Dejanović I, Grujić A, Stijepović M. Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer. in Energy & Fuels. 2018;32(5):6378-6396.
doi:10.1021/acs.energyfuels.7b03897 .

Polovina, Sasa, Vojtech, Merva, Dejanović, Igor, Grujić, Aleksandar, Stijepović, Mirko, "Modeling a Reaction Section of a Commercial Continuous Catalytic Reformer" in Energy & Fuels, 32, no. 5 (2018):6378-6396,
https://doi.org/10.1021/acs.energyfuels.7b03897 . .

TY  - JOUR
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Stijepović, Mirko
AU  - Perišić, Srđan
AU  - Žák, Tomáš
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3523
AB  - The Nd-Fe-B-barium ferrite hybrid composite materials with epoxy matrix presented in this paper cover maximum energy product from 1 to 13 MGOe. Mixture of magnetic particles is responsible for high magnetic quality, while the thermosetting resin plays a role in mechanical properties. Samples with various ratio of Nd-Fe-B to barium ferrite in constant weight of epoxy resin are examined by tensile strength measurements. Magnetic measurements carried out by using vibrating sample magnetometer (VSM) show typical hysteresis loop. A structural analysis of composite surface is conducted by scanning electron microscope (SEM). Uniform particle distribution of plate shape Nd-Fe-B particles and spherical barium ferrite agglomerates is essential for both, mechanical and magnetic properties of composite materials. Fine particles are incorporated in-between larger particles in epoxy bulk which lead to improving the properties.
AB  - U ovom radu proučavani su hibridni Nd-Fe-B-barijum ferit kompozitni materijali sa epoksi matricom čiji se maksimani energetski proizvod kreće od 1 do 13 MGOe. Odlična magnetna svojstva kompozita potiču od smeše magnetnih čestica, dok termoočvršćavajući polimer ima uticaj na mehanička svojstva. Uzorci sa različitim odnosom udela Nd-Fe-B i barijum ferita u konstantnoj masi epoksi veziva su ispitivani na zateznu čvrstoću. Magnetna merenja vršena pomoću vibracionog magnetometra (VSM) pokazuju karakteristučnu histerezisnu petlju. Strukturnu analizu na površini kompozita sprovedena pomoću skenirajuće elektronske mikroskopije (SEM). Uniformna raspodela pločastih Nd-Fe-B čestica i sferičnih aglomerata barijum ferita je veoma značajna i za mehanička i za magnetna svojstva kompozitnih materijala. Sitne čestice su inkorporirane između velikih čestica u masi epoksida što dovodi do poboljšanja svojstava.
PB  - Engineering Society for Corrosion, Belgrade, Serbia
T2  - Zaštita materijala
T1  - Tensile strength properties of hybrid magnetic composite materials
T1  - Zatezna čvrstoća hibridnih magnetnih kompozitnih materijala
EP  - 575
IS  - 4
SP  - 570
VL  - 58
DO  - 10.5937/ZasMat1704570G
ER  - 

@article{
author = "Grujić, Aleksandar and Stajić-Trošić, Jasna and Stijepović, Mirko and Perišić, Srđan and Žák, Tomáš",
year = "2017",
abstract = "The Nd-Fe-B-barium ferrite hybrid composite materials with epoxy matrix presented in this paper cover maximum energy product from 1 to 13 MGOe. Mixture of magnetic particles is responsible for high magnetic quality, while the thermosetting resin plays a role in mechanical properties. Samples with various ratio of Nd-Fe-B to barium ferrite in constant weight of epoxy resin are examined by tensile strength measurements. Magnetic measurements carried out by using vibrating sample magnetometer (VSM) show typical hysteresis loop. A structural analysis of composite surface is conducted by scanning electron microscope (SEM). Uniform particle distribution of plate shape Nd-Fe-B particles and spherical barium ferrite agglomerates is essential for both, mechanical and magnetic properties of composite materials. Fine particles are incorporated in-between larger particles in epoxy bulk which lead to improving the properties., U ovom radu proučavani su hibridni Nd-Fe-B-barijum ferit kompozitni materijali sa epoksi matricom čiji se maksimani energetski proizvod kreće od 1 do 13 MGOe. Odlična magnetna svojstva kompozita potiču od smeše magnetnih čestica, dok termoočvršćavajući polimer ima uticaj na mehanička svojstva. Uzorci sa različitim odnosom udela Nd-Fe-B i barijum ferita u konstantnoj masi epoksi veziva su ispitivani na zateznu čvrstoću. Magnetna merenja vršena pomoću vibracionog magnetometra (VSM) pokazuju karakteristučnu histerezisnu petlju. Strukturnu analizu na površini kompozita sprovedena pomoću skenirajuće elektronske mikroskopije (SEM). Uniformna raspodela pločastih Nd-Fe-B čestica i sferičnih aglomerata barijum ferita je veoma značajna i za mehanička i za magnetna svojstva kompozitnih materijala. Sitne čestice su inkorporirane između velikih čestica u masi epoksida što dovodi do poboljšanja svojstava.",
publisher = "Engineering Society for Corrosion, Belgrade, Serbia",
journal = "Zaštita materijala",
title = "Tensile strength properties of hybrid magnetic composite materials, Zatezna čvrstoća hibridnih magnetnih kompozitnih materijala",
pages = "575-570",
number = "4",
volume = "58",
doi = "10.5937/ZasMat1704570G"
}

Grujić, A., Stajić-Trošić, J., Stijepović, M., Perišić, S.,& Žák, T.. (2017). Tensile strength properties of hybrid magnetic composite materials. in Zaštita materijala
Engineering Society for Corrosion, Belgrade, Serbia., 58(4), 570-575.
https://doi.org/10.5937/ZasMat1704570G

Grujić A, Stajić-Trošić J, Stijepović M, Perišić S, Žák T. Tensile strength properties of hybrid magnetic composite materials. in Zaštita materijala. 2017;58(4):570-575.
doi:10.5937/ZasMat1704570G .

Grujić, Aleksandar, Stajić-Trošić, Jasna, Stijepović, Mirko, Perišić, Srđan, Žák, Tomáš, "Tensile strength properties of hybrid magnetic composite materials" in Zaštita materijala, 58, no. 4 (2017):570-575,
https://doi.org/10.5937/ZasMat1704570G . .

TY  - JOUR
AU  - Stijepović, Mirko
AU  - Papadopoulos, Athanasios I.
AU  - Linke, Patrick
AU  - Stijepović, Vladimir
AU  - Grujić, Aleksandar
AU  - Kijevčanin, Mirjana
AU  - Seferlis, Panos
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3605
AB  - We propose a systematic model for the optimum design of Organic Rankine Cycles (ORC) used for power generation from multiple heat sources available at different temperatures. The model enables the automated generation of inclusive and flexible ORC cascades and is optimized using a global optimization algorithm. Design parameters include the number of ORC cascades, the shared structure of the heat exchanger network, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. Results indicate significant operating improvements from using a double ORC cascade with different working fluids.
PB  - Elsevier Science Bv, Amsterdam
T2  - 27th European Symposium on Computer Aided Process Engineering, Pt A
T1  - Targeting and Design of Organic Rankine Cycle Systems for Multiple Heat Sources with Simultaneous Working Fluid Selection
EP  - 774
SP  - 769
VL  - 40A
DO  - 10.1016/B978-0-444-63965-3.50130-6
ER  - 

@article{
author = "Stijepović, Mirko and Papadopoulos, Athanasios I. and Linke, Patrick and Stijepović, Vladimir and Grujić, Aleksandar and Kijevčanin, Mirjana and Seferlis, Panos",
year = "2017",
abstract = "We propose a systematic model for the optimum design of Organic Rankine Cycles (ORC) used for power generation from multiple heat sources available at different temperatures. The model enables the automated generation of inclusive and flexible ORC cascades and is optimized using a global optimization algorithm. Design parameters include the number of ORC cascades, the shared structure of the heat exchanger network, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. Results indicate significant operating improvements from using a double ORC cascade with different working fluids.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "27th European Symposium on Computer Aided Process Engineering, Pt A",
title = "Targeting and Design of Organic Rankine Cycle Systems for Multiple Heat Sources with Simultaneous Working Fluid Selection",
pages = "774-769",
volume = "40A",
doi = "10.1016/B978-0-444-63965-3.50130-6"
}

Stijepović, M., Papadopoulos, A. I., Linke, P., Stijepović, V., Grujić, A., Kijevčanin, M.,& Seferlis, P.. (2017). Targeting and Design of Organic Rankine Cycle Systems for Multiple Heat Sources with Simultaneous Working Fluid Selection. in 27th European Symposium on Computer Aided Process Engineering, Pt A
Elsevier Science Bv, Amsterdam., 40A, 769-774.
https://doi.org/10.1016/B978-0-444-63965-3.50130-6

Stijepović M, Papadopoulos AI, Linke P, Stijepović V, Grujić A, Kijevčanin M, Seferlis P. Targeting and Design of Organic Rankine Cycle Systems for Multiple Heat Sources with Simultaneous Working Fluid Selection. in 27th European Symposium on Computer Aided Process Engineering, Pt A. 2017;40A:769-774.
doi:10.1016/B978-0-444-63965-3.50130-6 .

Stijepović, Mirko, Papadopoulos, Athanasios I., Linke, Patrick, Stijepović, Vladimir, Grujić, Aleksandar, Kijevčanin, Mirjana, Seferlis, Panos, "Targeting and Design of Organic Rankine Cycle Systems for Multiple Heat Sources with Simultaneous Working Fluid Selection" in 27th European Symposium on Computer Aided Process Engineering, Pt A, 40A (2017):769-774,
https://doi.org/10.1016/B978-0-444-63965-3.50130-6 . .

TY  - JOUR
AU  - Stijepović, Mirko
AU  - Papadopoulos, Athanasios I.
AU  - Linke, Patrick
AU  - Stijepović, Vladimir
AU  - Grujić, Aleksandar
AU  - Kijevčanin, Mirjana
AU  - Seferlis, Panos
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3735
AB  - This work presents a systematic approach toward the design of Organic Rankine Cycles (ORC) for the generation of power from multiple heat sources available at different temperature levels. The design problem is approached in a mixed-integer non-linear programming (MINLP) formulation where an inclusive and flexible ORC model is automatically evolved by a deterministic algorithm for global optimization. The basic building block of the model is the ORC cascade which consists of a heat extraction, a power generation, a condensation and a liquid pressurization section. The aim of the optimization is to determine the optimum number of ORC cascades, the structure of the heat exchanger network shared among different cascades, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. The approach is illustrated through a case study which indicates that a system of two waste heat sources is best exploited through two interconnected ORC utilizing different working fluids.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of Cleaner Production
T1  - Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection
EP  - 1970
SP  - 1950
VL  - 142
DO  - 10.1016/j.jclepro.2016.11.088
ER  - 

@article{
author = "Stijepović, Mirko and Papadopoulos, Athanasios I. and Linke, Patrick and Stijepović, Vladimir and Grujić, Aleksandar and Kijevčanin, Mirjana and Seferlis, Panos",
year = "2017",
abstract = "This work presents a systematic approach toward the design of Organic Rankine Cycles (ORC) for the generation of power from multiple heat sources available at different temperature levels. The design problem is approached in a mixed-integer non-linear programming (MINLP) formulation where an inclusive and flexible ORC model is automatically evolved by a deterministic algorithm for global optimization. The basic building block of the model is the ORC cascade which consists of a heat extraction, a power generation, a condensation and a liquid pressurization section. The aim of the optimization is to determine the optimum number of ORC cascades, the structure of the heat exchanger network shared among different cascades, the operating conditions and the working fluid used in each cascade in order to identify an overall ORC structure that maximizes the power output. The approach is illustrated through a case study which indicates that a system of two waste heat sources is best exploited through two interconnected ORC utilizing different working fluids.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of Cleaner Production",
title = "Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection",
pages = "1970-1950",
volume = "142",
doi = "10.1016/j.jclepro.2016.11.088"
}

Stijepović, M., Papadopoulos, A. I., Linke, P., Stijepović, V., Grujić, A., Kijevčanin, M.,& Seferlis, P.. (2017). Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection. in Journal of Cleaner Production
Elsevier Sci Ltd, Oxford., 142, 1950-1970.
https://doi.org/10.1016/j.jclepro.2016.11.088

Stijepović M, Papadopoulos AI, Linke P, Stijepović V, Grujić A, Kijevčanin M, Seferlis P. Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection. in Journal of Cleaner Production. 2017;142:1950-1970.
doi:10.1016/j.jclepro.2016.11.088 .

Stijepović, Mirko, Papadopoulos, Athanasios I., Linke, Patrick, Stijepović, Vladimir, Grujić, Aleksandar, Kijevčanin, Mirjana, Seferlis, Panos, "Organic Rankine Cycle system performance targeting and design for multiple heat sources with simultaneous working fluid selection" in Journal of Cleaner Production, 142 (2017):1950-1970,
https://doi.org/10.1016/j.jclepro.2016.11.088 . .

TY  - JOUR
AU  - Zarić, Milana
AU  - Stijepović, Mirko
AU  - Linke, Patrick
AU  - Stajić-Trošić, Jasna
AU  - Bugarski, Branko
AU  - Kijevčanin, Mirjana
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3714
AB  - In order to reduce the usage of fossil fuels in industrial sectors by meeting the requirements of production processes, new heat integration and heat recovery approaches are developed. The goal of this study is to develop an approach to increase energy efficiency of an industrial zone by recovering and reusing waste heat via indirect heat integration. Industrial zones usually consist of multiple independent plants, where each plant is supplied by an independent utility system, as a decentralized system. In this study, a new approach is developed to target minimum energy requirements where an industrial zone would be supplied by a centralized utility system instead of decentralized utility system. The approach assumes that all process plants in an industrial zone are linked through the central utility system. This method is formulated as a linear programming problem (LP). Moreover, the proposed method may be used for decision making related to energy integration strategy of an industrial zone. In addition, the proposed method was applied on a case study. The results revealed that saving of fossil fuel could be achieved.
PB  - Savez hemijskih inženjera, Beograd
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Targeting heat recovery and reuse in industrial zone
EP  - 82
IS  - 1
SP  - 73
VL  - 23
DO  - 10.2298/CICEQ150622009Z
ER  - 

@article{
author = "Zarić, Milana and Stijepović, Mirko and Linke, Patrick and Stajić-Trošić, Jasna and Bugarski, Branko and Kijevčanin, Mirjana",
year = "2017",
abstract = "In order to reduce the usage of fossil fuels in industrial sectors by meeting the requirements of production processes, new heat integration and heat recovery approaches are developed. The goal of this study is to develop an approach to increase energy efficiency of an industrial zone by recovering and reusing waste heat via indirect heat integration. Industrial zones usually consist of multiple independent plants, where each plant is supplied by an independent utility system, as a decentralized system. In this study, a new approach is developed to target minimum energy requirements where an industrial zone would be supplied by a centralized utility system instead of decentralized utility system. The approach assumes that all process plants in an industrial zone are linked through the central utility system. This method is formulated as a linear programming problem (LP). Moreover, the proposed method may be used for decision making related to energy integration strategy of an industrial zone. In addition, the proposed method was applied on a case study. The results revealed that saving of fossil fuel could be achieved.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Targeting heat recovery and reuse in industrial zone",
pages = "82-73",
number = "1",
volume = "23",
doi = "10.2298/CICEQ150622009Z"
}

Zarić, M., Stijepović, M., Linke, P., Stajić-Trošić, J., Bugarski, B.,& Kijevčanin, M.. (2017). Targeting heat recovery and reuse in industrial zone. in Chemical Industry & Chemical Engineering Quarterly
Savez hemijskih inženjera, Beograd., 23(1), 73-82.
https://doi.org/10.2298/CICEQ150622009Z

Zarić M, Stijepović M, Linke P, Stajić-Trošić J, Bugarski B, Kijevčanin M. Targeting heat recovery and reuse in industrial zone. in Chemical Industry & Chemical Engineering Quarterly. 2017;23(1):73-82.
doi:10.2298/CICEQ150622009Z .

Zarić, Milana, Stijepović, Mirko, Linke, Patrick, Stajić-Trošić, Jasna, Bugarski, Branko, Kijevčanin, Mirjana, "Targeting heat recovery and reuse in industrial zone" in Chemical Industry & Chemical Engineering Quarterly, 23, no. 1 (2017):73-82,
https://doi.org/10.2298/CICEQ150622009Z . .

TY  - JOUR
AU  - Alnouri, Sabla
AU  - Linke, Patrick
AU  - Stijepović, Mirko
AU  - El-Halwagi, Mahmoud
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3332
AB  - Studies involving the design of interplant water networks have received significant attention over the past few years. Many methods have been developed to assist in obtaining efficient water reuse network design schemes, mainly using fundamental concepts of water integration. Our recent work has presented the importance of considering spatial constraints in the form of utility corridor availability, when identifying cost-effective interplant water network arrangements in industrial zones (Alnouri et al., [2014]: Clean Technologies and Environmental Policy 16, 1637-1659). This article extends the scope of our previous work by enabling the identification of new corridor locations, which could potentially be used alongside existing utility infrastructure. We present an optimization framework that allows unutilized areas of land within industrial zones to be sectioned off and added as optional transportation channels, together with existing utility corridor regions, in the course of attaining cost-effective interplant water network designs. The methodology entails that identification of optimal wastewater reuse schemes among various processing entities, by exploring options for enhanced utility corridors. As an illustration, several cases that utilize an assumed layout for an industrial zone have been carried out, in which a number of unutilized regions of land were identified to exist. Several opportunities that allow for potential corridor additions onto existing corridor infrastructure, through the exploitation of unutilized regions of land within the plot, were explored. A number of improvements in the water network designs obtained are highlighted for the different case scenarios that have been investigated, using the proposed approach.
PB  - Wiley-Blackwell, Hoboken
T2  - Environmental Progress & Sustainable Energy
T1  - On the identification of optimal utility corridor locations in interplant water network synthesis
EP  - 1511
IS  - 5
SP  - 1492
VL  - 35
DO  - 10.1002/ep.12364
ER  - 

@article{
author = "Alnouri, Sabla and Linke, Patrick and Stijepović, Mirko and El-Halwagi, Mahmoud",
year = "2016",
abstract = "Studies involving the design of interplant water networks have received significant attention over the past few years. Many methods have been developed to assist in obtaining efficient water reuse network design schemes, mainly using fundamental concepts of water integration. Our recent work has presented the importance of considering spatial constraints in the form of utility corridor availability, when identifying cost-effective interplant water network arrangements in industrial zones (Alnouri et al., [2014]: Clean Technologies and Environmental Policy 16, 1637-1659). This article extends the scope of our previous work by enabling the identification of new corridor locations, which could potentially be used alongside existing utility infrastructure. We present an optimization framework that allows unutilized areas of land within industrial zones to be sectioned off and added as optional transportation channels, together with existing utility corridor regions, in the course of attaining cost-effective interplant water network designs. The methodology entails that identification of optimal wastewater reuse schemes among various processing entities, by exploring options for enhanced utility corridors. As an illustration, several cases that utilize an assumed layout for an industrial zone have been carried out, in which a number of unutilized regions of land were identified to exist. Several opportunities that allow for potential corridor additions onto existing corridor infrastructure, through the exploitation of unutilized regions of land within the plot, were explored. A number of improvements in the water network designs obtained are highlighted for the different case scenarios that have been investigated, using the proposed approach.",
publisher = "Wiley-Blackwell, Hoboken",
journal = "Environmental Progress & Sustainable Energy",
title = "On the identification of optimal utility corridor locations in interplant water network synthesis",
pages = "1511-1492",
number = "5",
volume = "35",
doi = "10.1002/ep.12364"
}

Alnouri, S., Linke, P., Stijepović, M.,& El-Halwagi, M.. (2016). On the identification of optimal utility corridor locations in interplant water network synthesis. in Environmental Progress & Sustainable Energy
Wiley-Blackwell, Hoboken., 35(5), 1492-1511.
https://doi.org/10.1002/ep.12364

Alnouri S, Linke P, Stijepović M, El-Halwagi M. On the identification of optimal utility corridor locations in interplant water network synthesis. in Environmental Progress & Sustainable Energy. 2016;35(5):1492-1511.
doi:10.1002/ep.12364 .

Alnouri, Sabla, Linke, Patrick, Stijepović, Mirko, El-Halwagi, Mahmoud, "On the identification of optimal utility corridor locations in interplant water network synthesis" in Environmental Progress & Sustainable Energy, 35, no. 5 (2016):1492-1511,
https://doi.org/10.1002/ep.12364 . .

TY  - CONF
AU  - Zarić, Milana M.
AU  - Stijepović, Mirko
AU  - Linke, Patrick
AU  - Kijevčanin, Mirjana
AU  - Stajić-Trošić, Jasna
AU  - Bugarski, Branko
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/7358
AB  - Fossil fuels are widely used to provide energy in major industrial sectors, while consumption of
fossil fuel leads to undesirable increases in greenhouse gas emissions, causing climate changes.
Because of it is important to use energy in more efficient way in order to reduce theneedofusing
fossil fuel. Heat recovery and reuse of waste heat is a promising approach to increase energy
efficiency, saving energy whichleadstoreduceddemands for fossil fuels.
The goal of this study is to minimize the fuel consumption by maximizing energy efficiency via
indirect heat integration of multiple processes in an industrial zone. Theproposedmodel is
applied on a case study, which consists of multiple plants,served by a centralized
utilitysystem,which provides required heat and power for processes.Theadvantage of the used
model is simplicity and its linear programming formulation (LP).
AB  - Fosilna goriva imaju veliku ulogu u obezbeđivanju potrebne energije u većini industrijskih sektora.
Potrošnja fosilnih goriva dovodi do neželjenog povećanja emisije gasova staklene bašte,
koji uzrokuju klimatske promene.Zbog potrebe da se smanji potrošnja fosilnih goriva,
rekuperacija otpadne toplote je pristup koji obećava povećanje energetske efikasnoti, jer se
energija štedi, što dovodi do manjih zahteva za potrošnju fosilnih goriva. Cilj ove studije je svođenje upotrebe fosilnih goriva na minimum, time što se
maksimizuje energetska efikasnost kroz indirektnu toplotnu integraciju. Predloženi model
toplotne integracije je primenjen na case studiju, kojapredstavlja industrijsku zonu sa više postrojenja.
Predpostavlja se da se industrijaska zona snabdeva centralizovani mutiliti sistemom,
koji obezbeđuje potrebnu količinu toplote i energije za sve procese. Prednost korišćenog modela je
jednostavnost i linearnost programske formulacije (LP programiranje).
PB  - Zvornik : Tehnološki fakultet
C3  - Knjiga radova = Proceedings / IV međunarodni kongres "Inženjerstvo, ekologija i materijali u procesnoj industriji", Jahorina, 04.03.- 06.03. 2015. = IV International Congress "Engineering, Ecology and Materials in the Processing Industry"
T1  - Optimization of waste heat recovery via heat integration
T1  - Optimizacija rekuperacije toplote pomoću toplotne integracije
EP  - 602
SP  - 598
DO  - 10.7251/EEMEN1501598Z
ER  - 

@conference{
author = "Zarić, Milana M. and Stijepović, Mirko and Linke, Patrick and Kijevčanin, Mirjana and Stajić-Trošić, Jasna and Bugarski, Branko",
year = "2015",
abstract = "Fossil fuels are widely used to provide energy in major industrial sectors, while consumption of
fossil fuel leads to undesirable increases in greenhouse gas emissions, causing climate changes.
Because of it is important to use energy in more efficient way in order to reduce theneedofusing
fossil fuel. Heat recovery and reuse of waste heat is a promising approach to increase energy
efficiency, saving energy whichleadstoreduceddemands for fossil fuels.
The goal of this study is to minimize the fuel consumption by maximizing energy efficiency via
indirect heat integration of multiple processes in an industrial zone. Theproposedmodel is
applied on a case study, which consists of multiple plants,served by a centralized
utilitysystem,which provides required heat and power for processes.Theadvantage of the used
model is simplicity and its linear programming formulation (LP)., Fosilna goriva imaju veliku ulogu u obezbeđivanju potrebne energije u većini industrijskih sektora.
Potrošnja fosilnih goriva dovodi do neželjenog povećanja emisije gasova staklene bašte,
koji uzrokuju klimatske promene.Zbog potrebe da se smanji potrošnja fosilnih goriva,
rekuperacija otpadne toplote je pristup koji obećava povećanje energetske efikasnoti, jer se
energija štedi, što dovodi do manjih zahteva za potrošnju fosilnih goriva. Cilj ove studije je svođenje upotrebe fosilnih goriva na minimum, time što se
maksimizuje energetska efikasnost kroz indirektnu toplotnu integraciju. Predloženi model
toplotne integracije je primenjen na case studiju, kojapredstavlja industrijsku zonu sa više postrojenja.
Predpostavlja se da se industrijaska zona snabdeva centralizovani mutiliti sistemom,
koji obezbeđuje potrebnu količinu toplote i energije za sve procese. Prednost korišćenog modela je
jednostavnost i linearnost programske formulacije (LP programiranje).",
publisher = "Zvornik : Tehnološki fakultet",
journal = "Knjiga radova = Proceedings / IV međunarodni kongres "Inženjerstvo, ekologija i materijali u procesnoj industriji", Jahorina, 04.03.- 06.03. 2015. = IV International Congress "Engineering, Ecology and Materials in the Processing Industry"",
title = "Optimization of waste heat recovery via heat integration, Optimizacija rekuperacije toplote pomoću toplotne integracije",
pages = "602-598",
doi = "10.7251/EEMEN1501598Z"
}

Zarić, M. M., Stijepović, M., Linke, P., Kijevčanin, M., Stajić-Trošić, J.,& Bugarski, B.. (2015). Optimization of waste heat recovery via heat integration. in Knjiga radova = Proceedings / IV međunarodni kongres "Inženjerstvo, ekologija i materijali u procesnoj industriji", Jahorina, 04.03.- 06.03. 2015. = IV International Congress "Engineering, Ecology and Materials in the Processing Industry"
Zvornik : Tehnološki fakultet., 598-602.
https://doi.org/10.7251/EEMEN1501598Z

Zarić MM, Stijepović M, Linke P, Kijevčanin M, Stajić-Trošić J, Bugarski B. Optimization of waste heat recovery via heat integration. in Knjiga radova = Proceedings / IV međunarodni kongres "Inženjerstvo, ekologija i materijali u procesnoj industriji", Jahorina, 04.03.- 06.03. 2015. = IV International Congress "Engineering, Ecology and Materials in the Processing Industry". 2015;:598-602.
doi:10.7251/EEMEN1501598Z .

Zarić, Milana M., Stijepović, Mirko, Linke, Patrick, Kijevčanin, Mirjana, Stajić-Trošić, Jasna, Bugarski, Branko, "Optimization of waste heat recovery via heat integration" in Knjiga radova = Proceedings / IV međunarodni kongres "Inženjerstvo, ekologija i materijali u procesnoj industriji", Jahorina, 04.03.- 06.03. 2015. = IV International Congress "Engineering, Ecology and Materials in the Processing Industry" (2015):598-602,
https://doi.org/10.7251/EEMEN1501598Z . .

TY  - JOUR
AU  - Ilić, Jovana M.
AU  - Grujić, Aleksandar
AU  - Stijepović, Mirko
AU  - Stajić-Trošić, Jasna
AU  - Bugarski, Branko
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2906
AB  - The aim of this paper is to obtain microbeads of natural polymers such as alginate and chitosan. These microbeads were used as potential carriers for the active ingredients so that in this study the diffusion of various substances from them is analyzed. Alginate microbeads were obtained by electrostatic droplet method. In the resulting microbeads was performed absorption of three tracer indicators with different molecular weight (acridine orange, blue dextran, methylene blue). The goal of the experiment is to monitor indicators release kinetics from microbeads. Based on these measurements the layoffs curve should give an answer on the impact of the molecular size of the three indicators on the diffusion rate of microbeads. In order to achieve the slow release of indicators alginate microbeads were coated with chitosan. Chitosan has an impact on reducing the porosity of gel, which further led to lower release tracer indicators of microbeads. Comparative analysis of the obtained layoffs curves answers about the impact on the process of obtaining micro diffusion rate indicator.
AB  - U ovom radu je prikazan proces sinteze mikročestica od prirodnih polimera, alginata i hitozana, kao i neka njihova svojstva. Osnovna primena ovih mikročestica je da se koriste kao potencijalni nosači za aktivne supstance. U tom smislu je ispitivana i difuzija različitih supstanci iz njih. Na alginatne mikročestice dobijene metodom elektrostatičke ekstruzije vršena je apsorpcija tri trejserska indikatora sa različitim molekulskim masama: akridin oranž, plavi dekstran i metilensko plavo. Praćenjem kinetike otpuštanja indikatora iz mikročestica konstruisane su krive otpuštanja koje daju informaciju o uticaju veličine molekula svakog od indikatora na brzinu difuzije iz mikročestica. Da bi se postiglo što sporije otpuštanje indikatora alginatne mikročestice su oblagane hitozanom. Hitozan ima uticaj na smanjenje poroznosti gela, što dovodi do sporijeg otpuštanja trejsersikh indikatora iz mikročestica. Uporedna analiza dobijenih krivih otpuštanja daje odgovor o uticaju postupka dobijanja mikročestica na brzinu difuzije indikatora.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Effect of tracers molecular weight on the release process from alginate microbeads
T1  - Uticaj molekulske mase trejserskih indikatora na kontrolisano otpuštanje iz alginatnih mikročestica
EP  - 405
IS  - 3
SP  - 401
VL  - 70
DO  - 10.5937/tehnika1503401I
ER  - 

@article{
author = "Ilić, Jovana M. and Grujić, Aleksandar and Stijepović, Mirko and Stajić-Trošić, Jasna and Bugarski, Branko",
year = "2015",
abstract = "The aim of this paper is to obtain microbeads of natural polymers such as alginate and chitosan. These microbeads were used as potential carriers for the active ingredients so that in this study the diffusion of various substances from them is analyzed. Alginate microbeads were obtained by electrostatic droplet method. In the resulting microbeads was performed absorption of three tracer indicators with different molecular weight (acridine orange, blue dextran, methylene blue). The goal of the experiment is to monitor indicators release kinetics from microbeads. Based on these measurements the layoffs curve should give an answer on the impact of the molecular size of the three indicators on the diffusion rate of microbeads. In order to achieve the slow release of indicators alginate microbeads were coated with chitosan. Chitosan has an impact on reducing the porosity of gel, which further led to lower release tracer indicators of microbeads. Comparative analysis of the obtained layoffs curves answers about the impact on the process of obtaining micro diffusion rate indicator., U ovom radu je prikazan proces sinteze mikročestica od prirodnih polimera, alginata i hitozana, kao i neka njihova svojstva. Osnovna primena ovih mikročestica je da se koriste kao potencijalni nosači za aktivne supstance. U tom smislu je ispitivana i difuzija različitih supstanci iz njih. Na alginatne mikročestice dobijene metodom elektrostatičke ekstruzije vršena je apsorpcija tri trejserska indikatora sa različitim molekulskim masama: akridin oranž, plavi dekstran i metilensko plavo. Praćenjem kinetike otpuštanja indikatora iz mikročestica konstruisane su krive otpuštanja koje daju informaciju o uticaju veličine molekula svakog od indikatora na brzinu difuzije iz mikročestica. Da bi se postiglo što sporije otpuštanje indikatora alginatne mikročestice su oblagane hitozanom. Hitozan ima uticaj na smanjenje poroznosti gela, što dovodi do sporijeg otpuštanja trejsersikh indikatora iz mikročestica. Uporedna analiza dobijenih krivih otpuštanja daje odgovor o uticaju postupka dobijanja mikročestica na brzinu difuzije indikatora.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Effect of tracers molecular weight on the release process from alginate microbeads, Uticaj molekulske mase trejserskih indikatora na kontrolisano otpuštanje iz alginatnih mikročestica",
pages = "405-401",
number = "3",
volume = "70",
doi = "10.5937/tehnika1503401I"
}

Ilić, J. M., Grujić, A., Stijepović, M., Stajić-Trošić, J.,& Bugarski, B.. (2015). Effect of tracers molecular weight on the release process from alginate microbeads. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 70(3), 401-405.
https://doi.org/10.5937/tehnika1503401I

Ilić JM, Grujić A, Stijepović M, Stajić-Trošić J, Bugarski B. Effect of tracers molecular weight on the release process from alginate microbeads. in Tehnika. 2015;70(3):401-405.
doi:10.5937/tehnika1503401I .

Ilić, Jovana M., Grujić, Aleksandar, Stijepović, Mirko, Stajić-Trošić, Jasna, Bugarski, Branko, "Effect of tracers molecular weight on the release process from alginate microbeads" in Tehnika, 70, no. 3 (2015):401-405,
https://doi.org/10.5937/tehnika1503401I . .

TY  - JOUR
AU  - Mavrou, Paschalia
AU  - Papadopoulos, Athanasios I.
AU  - Stijepović, Mirko
AU  - Seferlis, Panos
AU  - Linke, Patrick
AU  - Voutetakis, Spyros
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3014
AB  - This work investigates the performance of working fluid mixtures for use in solar ORC (Organic Rankine Cycle systems) with heat storage employing FPC (Flat Plate Collectors). Several mixtures are considered including conventional choices often utilized in ORC as well as novel mixtures previously designed using advanced computer aided molecular design methods (Papadopoulos et al., 2013). The impact of heat source variability on the ORC performance is assessed for different working fluid mixtures. Solar radiation is represented in detail through actual, hourly averaged data for an entire year. A multi-criteria mixture selection methodology unveils important trade-offs among several important system operating parameters and efficiently highlights optimum operating ranges. Such parameters include the ORC thermal efficiency, the net generated power, the volume ratio across the turbine, the mass flow rate of the ORC working fluid, the evaporator temperature glide, the temperature drop in the storage tank, the ORC total yearly operating duration, the required collector aperture area to generate 1 kW of power and the irreversibility. A mixture of neopentane - 2-fluoromethoxy-2-methylpropane at 70% neopentane is found to be the most efficient in all the considered criteria simultaneously.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Novel and conventional working fluid mixtures for solar Rankine cycles: Performance assessment and multi-criteria selection
EP  - 396
SP  - 384
VL  - 75
DO  - 10.1016/j.applthermaleng.2014.10.077
ER  - 

@article{
author = "Mavrou, Paschalia and Papadopoulos, Athanasios I. and Stijepović, Mirko and Seferlis, Panos and Linke, Patrick and Voutetakis, Spyros",
year = "2015",
abstract = "This work investigates the performance of working fluid mixtures for use in solar ORC (Organic Rankine Cycle systems) with heat storage employing FPC (Flat Plate Collectors). Several mixtures are considered including conventional choices often utilized in ORC as well as novel mixtures previously designed using advanced computer aided molecular design methods (Papadopoulos et al., 2013). The impact of heat source variability on the ORC performance is assessed for different working fluid mixtures. Solar radiation is represented in detail through actual, hourly averaged data for an entire year. A multi-criteria mixture selection methodology unveils important trade-offs among several important system operating parameters and efficiently highlights optimum operating ranges. Such parameters include the ORC thermal efficiency, the net generated power, the volume ratio across the turbine, the mass flow rate of the ORC working fluid, the evaporator temperature glide, the temperature drop in the storage tank, the ORC total yearly operating duration, the required collector aperture area to generate 1 kW of power and the irreversibility. A mixture of neopentane - 2-fluoromethoxy-2-methylpropane at 70% neopentane is found to be the most efficient in all the considered criteria simultaneously.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Novel and conventional working fluid mixtures for solar Rankine cycles: Performance assessment and multi-criteria selection",
pages = "396-384",
volume = "75",
doi = "10.1016/j.applthermaleng.2014.10.077"
}

Mavrou, P., Papadopoulos, A. I., Stijepović, M., Seferlis, P., Linke, P.,& Voutetakis, S.. (2015). Novel and conventional working fluid mixtures for solar Rankine cycles: Performance assessment and multi-criteria selection. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 75, 384-396.
https://doi.org/10.1016/j.applthermaleng.2014.10.077

Mavrou P, Papadopoulos AI, Stijepović M, Seferlis P, Linke P, Voutetakis S. Novel and conventional working fluid mixtures for solar Rankine cycles: Performance assessment and multi-criteria selection. in Applied Thermal Engineering. 2015;75:384-396.
doi:10.1016/j.applthermaleng.2014.10.077 .

Mavrou, Paschalia, Papadopoulos, Athanasios I., Stijepović, Mirko, Seferlis, Panos, Linke, Patrick, Voutetakis, Spyros, "Novel and conventional working fluid mixtures for solar Rankine cycles: Performance assessment and multi-criteria selection" in Applied Thermal Engineering, 75 (2015):384-396,
https://doi.org/10.1016/j.applthermaleng.2014.10.077 . .