Bjeljac, Željko

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  • Bjeljac, Željko (2)
  • Bjeljac, Željko N. (1)
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Author's Bibliography

Utilization of geothermal springs as a renewable energy source: Vranjska Banja case study

Denda, Stefan Lj.; Micić, Jasna M.; Milanović-Pešić, Ana Z.; Brankov, Jovana J.; Bjeljac, Željko N.

(Belgrade : Vinča Institute of Nuclear Sciences, 2019)

TY  - JOUR
AU  - Denda, Stefan Lj.
AU  - Micić, Jasna M.
AU  - Milanović-Pešić, Ana Z.
AU  - Brankov, Jovana J.
AU  - Bjeljac, Željko N.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/7036
AB  - Despite the significant natural potential, geothermal energy in Serbia has traditionally been used in balneology and recreation, while its share in the country’s total energy balance is almost negligible (0.05%). The present paper deals with the City Municipality of Vranjska Banja as a pioneer in the territory of Serbia in using geothermal energy for heating. The concept and methodology of the present research are directly related to the utilization of geothermal resources for district heating in the Vranjska Banja area. The presented analysis includes: determining the available amount of energy, identifying the energy needs of selected public
facilities, and the estimation of investment necessary for energy utilization. A survey, combined with field research, is focused on four public facilities connected to the heating system relying on geothermal sources, as well as on two facilities that should be connected to the system in the next phases. The results show economic, ecological, and technological advantages of using geothermal heating systems, as well as the acceptable price of equipment maintenance. An economic assessment of the transition of one facility from the existing heating system to a system relying on geothermal energy has also been made. The analysis confirms the cost-effectiveness
of using geothermal energy and reveals numerous ecological advantages (safe heating, absence of CO2 emission) over other energy sources.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
T2  - Thermal Science: an International Journal
T1  - Utilization of geothermal springs as a renewable energy source: Vranjska Banja case study
SP  - 4083
EP  - 4093
VL  - 23
IS  - 6 (Part B)
DO  - 10.2298/TSCI190816391D
UR  - https://hdl.handle.net/21.15107/rcub_dais_7036
ER  - 
@article{
author = "Denda, Stefan Lj. and Micić, Jasna M. and Milanović-Pešić, Ana Z. and Brankov, Jovana J. and Bjeljac, Željko N.",
year = "2019",
abstract = "Despite the significant natural potential, geothermal energy in Serbia has traditionally been used in balneology and recreation, while its share in the country’s total energy balance is almost negligible (0.05%). The present paper deals with the City Municipality of Vranjska Banja as a pioneer in the territory of Serbia in using geothermal energy for heating. The concept and methodology of the present research are directly related to the utilization of geothermal resources for district heating in the Vranjska Banja area. The presented analysis includes: determining the available amount of energy, identifying the energy needs of selected public
facilities, and the estimation of investment necessary for energy utilization. A survey, combined with field research, is focused on four public facilities connected to the heating system relying on geothermal sources, as well as on two facilities that should be connected to the system in the next phases. The results show economic, ecological, and technological advantages of using geothermal heating systems, as well as the acceptable price of equipment maintenance. An economic assessment of the transition of one facility from the existing heating system to a system relying on geothermal energy has also been made. The analysis confirms the cost-effectiveness
of using geothermal energy and reveals numerous ecological advantages (safe heating, absence of CO2 emission) over other energy sources.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "Thermal Science: an International Journal",
title = "Utilization of geothermal springs as a renewable energy source: Vranjska Banja case study",
pages = "4083-4093",
volume = "23",
number = "6 (Part B)",
doi = "10.2298/TSCI190816391D",
url = "https://hdl.handle.net/21.15107/rcub_dais_7036"
}
Denda, S. Lj., Micić, J. M., Milanović-Pešić, A. Z., Brankov, J. J.,& Bjeljac, Ž. N.. (2019). Utilization of geothermal springs as a renewable energy source: Vranjska Banja case study. in Thermal Science: an International Journal
Belgrade : Vinča Institute of Nuclear Sciences., 23(6 (Part B)), 4083-4093.
https://doi.org/10.2298/TSCI190816391D
https://hdl.handle.net/21.15107/rcub_dais_7036
Denda SL, Micić JM, Milanović-Pešić AZ, Brankov JJ, Bjeljac ŽN. Utilization of geothermal springs as a renewable energy source: Vranjska Banja case study. in Thermal Science: an International Journal. 2019;23(6 (Part B)):4083-4093.
doi:10.2298/TSCI190816391D
https://hdl.handle.net/21.15107/rcub_dais_7036 .
Denda, Stefan Lj., Micić, Jasna M., Milanović-Pešić, Ana Z., Brankov, Jovana J., Bjeljac, Željko N., "Utilization of geothermal springs as a renewable energy source: Vranjska Banja case study" in Thermal Science: an International Journal, 23, no. 6 (Part B) (2019):4083-4093,
https://doi.org/10.2298/TSCI190816391D .,
https://hdl.handle.net/21.15107/rcub_dais_7036 .
1
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1

Hiatus in global warming - the example of water temperature of the Danube river at Bogojevo gauge (Serbia)

Ducić, Vladan; Milenković, Milan; Milijašević, Dragana; Vujačić, Duško M.; Bjeljac, Željko; Lović, Suzana L.; Gajić, Mirjana; Anđelković, Goran; Đorđević, Aleksandar

(Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd, 2015)

TY  - JOUR
AU  - Ducić, Vladan
AU  - Milenković, Milan
AU  - Milijašević, Dragana
AU  - Vujačić, Duško M.
AU  - Bjeljac, Željko
AU  - Lović, Suzana L.
AU  - Gajić, Mirjana
AU  - Anđelković, Goran
AU  - Đorđević, Aleksandar
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/12563
AB  - The research included trends in water temperature of the Danube River at Bogojevo gauge and surface air temperature at the nearby meteorological station Sombor, as well as an analysis of the results obtained in relation to the claims of the existence of the hiatus in global air temperature increase in the period 1998-2012. In the period 1961-2013, there was a statistically significant increase in the mean annual water temperature (0.039 degrees C per year), as well as all the average monthly values. However, with annual values for the period 1998-2013, there was a decrease. The longest periods of negative trend (27 years) were recorded for January and February. A high correlation was found between the surface air temperature and water temperature for all monthly and seasonal values. In the mean annual air temperature the presence of the hiatus is not observed, but a negative trend is recorded in March (32 years), December (43 years), and February (49 years). The highest correlations between water temperature and North Atlantic Oscillation (NAO), Arctic Oscillation (AO), and Atlantic Multidecadal Oscillation (AMO) were obtained for the NAO in January (0.60), the AMO in autumn (0.52), and the NAO in winter (0.51). For surface air temperature, the highest correlations were registered for the AMO in summer (0.49) and the NAO in winter (0.42). The results indicate the dominant role of natural factors in the decrease of winter air temperature and water temperature of the Danube.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Hiatus in global warming - the example of water temperature of the Danube river at Bogojevo gauge (Serbia)
SP  - S467
EP  - S476
VL  - 19
DO  - 10.2298/TSCI150430133D
UR  - https://hdl.handle.net/21.15107/rcub_dais_12563
ER  - 
@article{
author = "Ducić, Vladan and Milenković, Milan and Milijašević, Dragana and Vujačić, Duško M. and Bjeljac, Željko and Lović, Suzana L. and Gajić, Mirjana and Anđelković, Goran and Đorđević, Aleksandar",
year = "2015",
abstract = "The research included trends in water temperature of the Danube River at Bogojevo gauge and surface air temperature at the nearby meteorological station Sombor, as well as an analysis of the results obtained in relation to the claims of the existence of the hiatus in global air temperature increase in the period 1998-2012. In the period 1961-2013, there was a statistically significant increase in the mean annual water temperature (0.039 degrees C per year), as well as all the average monthly values. However, with annual values for the period 1998-2013, there was a decrease. The longest periods of negative trend (27 years) were recorded for January and February. A high correlation was found between the surface air temperature and water temperature for all monthly and seasonal values. In the mean annual air temperature the presence of the hiatus is not observed, but a negative trend is recorded in March (32 years), December (43 years), and February (49 years). The highest correlations between water temperature and North Atlantic Oscillation (NAO), Arctic Oscillation (AO), and Atlantic Multidecadal Oscillation (AMO) were obtained for the NAO in January (0.60), the AMO in autumn (0.52), and the NAO in winter (0.51). For surface air temperature, the highest correlations were registered for the AMO in summer (0.49) and the NAO in winter (0.42). The results indicate the dominant role of natural factors in the decrease of winter air temperature and water temperature of the Danube.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Hiatus in global warming - the example of water temperature of the Danube river at Bogojevo gauge (Serbia)",
pages = "S467-S476",
volume = "19",
doi = "10.2298/TSCI150430133D",
url = "https://hdl.handle.net/21.15107/rcub_dais_12563"
}
Ducić, V., Milenković, M., Milijašević, D., Vujačić, D. M., Bjeljac, Ž., Lović, S. L., Gajić, M., Anđelković, G.,& Đorđević, A.. (2015). Hiatus in global warming - the example of water temperature of the Danube river at Bogojevo gauge (Serbia). in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 19, S467-S476.
https://doi.org/10.2298/TSCI150430133D
https://hdl.handle.net/21.15107/rcub_dais_12563
Ducić V, Milenković M, Milijašević D, Vujačić DM, Bjeljac Ž, Lović SL, Gajić M, Anđelković G, Đorđević A. Hiatus in global warming - the example of water temperature of the Danube river at Bogojevo gauge (Serbia). in Thermal Science. 2015;19:S467-S476.
doi:10.2298/TSCI150430133D
https://hdl.handle.net/21.15107/rcub_dais_12563 .
Ducić, Vladan, Milenković, Milan, Milijašević, Dragana, Vujačić, Duško M., Bjeljac, Željko, Lović, Suzana L., Gajić, Mirjana, Anđelković, Goran, Đorđević, Aleksandar, "Hiatus in global warming - the example of water temperature of the Danube river at Bogojevo gauge (Serbia)" in Thermal Science, 19 (2015):S467-S476,
https://doi.org/10.2298/TSCI150430133D .,
https://hdl.handle.net/21.15107/rcub_dais_12563 .
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Spatial analysis and mapping of fire risk zones and vulnerability assessment: Case study Mt. Stara planina

Jovanović, Radmila; Bjeljac, Željko; Miljković, Olgica; Terzić, Aleksandra

(Srpska akademija nauka i umetnosti SANU - Geografski institut 'Jovan Cvijić', Beograd, 2013)

TY  - JOUR
AU  - Jovanović, Radmila
AU  - Bjeljac, Željko
AU  - Miljković, Olgica
AU  - Terzić, Aleksandra
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/11888
AB  - During the turn of the century, the current data of registered fires in Stara planina were insufficient to up date and incomplete, which directly conditioned unintended purpose of prevention and fire protection. With the advent and development of new technologies (remote sensing, GIS, GPS, etc.), since 2010 various data patterns of fire have been collected, recorded, processed and analyzed. Based on the collected and processed data since 2010 preventive measures against fire and better management of natural resources of protected areas have been implemented. The aim of this paper is spatial analysis and mapping of risk zones of fire in Stara planina, consisting of different vegetation cover, the complex structure of the terrain and heterogeneous composition of the soil. In Stara planina, a total of 44505 fires in the open space, in the period from 2010 to 2012, was registered. Cartographic locating, plotting the recorded ''hot spots'' and analyzing topography (aspect, slope, etc) and collected data for this period, the authors identified and zoned endangered belts of Stara planina.
PB  - Srpska akademija nauka i umetnosti SANU - Geografski institut 'Jovan Cvijić', Beograd
T2  - Zbornik radova Geografskog instituta "Jovan Cvijić", SANU
T1  - Spatial analysis and mapping of fire risk zones and vulnerability assessment: Case study Mt. Stara planina
SP  - 213
EP  - 226
VL  - 63
IS  - 3
DO  - 10.2298/IJGI1303213J
UR  - https://hdl.handle.net/21.15107/rcub_dais_11888
ER  - 
@article{
author = "Jovanović, Radmila and Bjeljac, Željko and Miljković, Olgica and Terzić, Aleksandra",
year = "2013",
abstract = "During the turn of the century, the current data of registered fires in Stara planina were insufficient to up date and incomplete, which directly conditioned unintended purpose of prevention and fire protection. With the advent and development of new technologies (remote sensing, GIS, GPS, etc.), since 2010 various data patterns of fire have been collected, recorded, processed and analyzed. Based on the collected and processed data since 2010 preventive measures against fire and better management of natural resources of protected areas have been implemented. The aim of this paper is spatial analysis and mapping of risk zones of fire in Stara planina, consisting of different vegetation cover, the complex structure of the terrain and heterogeneous composition of the soil. In Stara planina, a total of 44505 fires in the open space, in the period from 2010 to 2012, was registered. Cartographic locating, plotting the recorded ''hot spots'' and analyzing topography (aspect, slope, etc) and collected data for this period, the authors identified and zoned endangered belts of Stara planina.",
publisher = "Srpska akademija nauka i umetnosti SANU - Geografski institut 'Jovan Cvijić', Beograd",
journal = "Zbornik radova Geografskog instituta "Jovan Cvijić", SANU",
title = "Spatial analysis and mapping of fire risk zones and vulnerability assessment: Case study Mt. Stara planina",
pages = "213-226",
volume = "63",
number = "3",
doi = "10.2298/IJGI1303213J",
url = "https://hdl.handle.net/21.15107/rcub_dais_11888"
}
Jovanović, R., Bjeljac, Ž., Miljković, O.,& Terzić, A.. (2013). Spatial analysis and mapping of fire risk zones and vulnerability assessment: Case study Mt. Stara planina. in Zbornik radova Geografskog instituta "Jovan Cvijić", SANU
Srpska akademija nauka i umetnosti SANU - Geografski institut 'Jovan Cvijić', Beograd., 63(3), 213-226.
https://doi.org/10.2298/IJGI1303213J
https://hdl.handle.net/21.15107/rcub_dais_11888
Jovanović R, Bjeljac Ž, Miljković O, Terzić A. Spatial analysis and mapping of fire risk zones and vulnerability assessment: Case study Mt. Stara planina. in Zbornik radova Geografskog instituta "Jovan Cvijić", SANU. 2013;63(3):213-226.
doi:10.2298/IJGI1303213J
https://hdl.handle.net/21.15107/rcub_dais_11888 .
Jovanović, Radmila, Bjeljac, Željko, Miljković, Olgica, Terzić, Aleksandra, "Spatial analysis and mapping of fire risk zones and vulnerability assessment: Case study Mt. Stara planina" in Zbornik radova Geografskog instituta "Jovan Cvijić", SANU, 63, no. 3 (2013):213-226,
https://doi.org/10.2298/IJGI1303213J .,
https://hdl.handle.net/21.15107/rcub_dais_11888 .
2