Претрага
374 items
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Effects of Energy Production and Consumption on Air Pollution in Serbia
Marija Živković (2019)Energy production and combustion, mostly from unregulated or inefficient fuel combustion, are the single most important anthropogenic sources of air pollutant emissions. Energy sector in Serbia is highly fossil fuel intensive: 87.88% of energy consumed in Serbia is related to fossil fuels, while almost 95% of energy sources are combusted. In 2017. energy related carbon dioxide emission in Serbia is was 47.95 million tones. The main source of carbon dioxide emission was coal, responsible for almost 70% of energy ...... blications/publication/WorldEnergyOutlookSpecialReport2016EnergyandAirPollution.pdf (accessed 28.8.2019.) 5. Larry E. Erickson, Reducing greenhouse gas emissions and improving air quality: Two global challenges, Environ Prog Sustain Energy. 2017 Jul; 36(4): 982–988 6. World Health Organization, https://www ...
... stat.gov.rs/G2019/Pdf/G20195645.pdf (accessed 28.8.2019.) 9. Intergovernmental panel on climate change, 2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 2, Energy, available at: https://www.ipcc-nggip.iges.or.jp/public/2006gl/vol2.html (accessed 28.8.2019.) 10. IEA, Key World Energy ...
... image11.emf image12.emf image13.emf image14.emf image1.png image2.wmf Wind 0.03% Hydro 5.26% Solar 0.01% Coal 49.36% Oil 23.77% Natural gas 14.75% Geothermal 0.03% Biomass 6.80% Hydro 26.32% Wind 0.13% Solar 0.04% Thermal Power Plants and CHP 73.51% Industry 27.62% ...Marija Živković. "Effects of Energy Production and Consumption on Air Pollution in Serbia" in Mining and Environmental Protection-MEP 2019, University of Belgrade, Faculty of Mining and Geology (2019)
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Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking
Within the Innovation developed several different non-detonating chemical mixtures for non-invasive methods of rock breaking. Laboratory and polygon tests gave the satisfactory results and knowledge enough to start the practical experiments in the field. The basis of this innovation is a theoretical assumption that certain chemical mixtures release a large quantity of gases during combustion. If these gases are found in the enclosed space a growing pressure on the walls of the chamber in which combustion takes place will ...Lazar Kričak, Milanka Negovanović, Nikola Simić, Stefan Milanović. "Non-Detonating Chemical Mixture for Non-Invasive Methods of Rock Breaking" in X International Scientific Congress Innovations 2024, Varna, Bulgaria, 24-27. jun 2024, Scientific Technical Union of Mechanical Engineering "Industry 4.0" (2024)
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2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem
... in landfills, such as production of benzene, toluene and ethyl-benzene in gas or leachate form. There is evidence that PET disposal can lead to the upsurge of hydrogen-sulfide concentrations (potentially deathly gas in higher concentration values)by sulfide-reducing bacteria (Webb et al., 2013) ...
... 45-60% of the total emitted gas from a landfill, carbon-dioxide takes the rest 40-60% leaving just around 1% to other gases (Marković and Stevović, 2016). The presence of water vapor 74 Sretenović B., Arnaut F., Vasiljević I., Cvetkov V. can speed up the process of gas production. This is of great ...
... measurements to determine how much subsurface gas is present (methane, hydrogen-sulfide, carbon-monoxide, carbon-dioxide etc.), and hydrogeological measurements for the quality of the underground water. REFERENCES ALEXANDER, A. (2010) An Overview of Landfill Gas Energy, Landfill Methane Outreach Program ...Branislav Sretenović, Filip Arnaut, Ivana Vasiljević, Vesna Cvetkov. "2D geoelectrical resistivity tomography application at the former city waste dump "Ada Huja": Eco-geological problem" in Podzemni radovi, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/PodRad1934059S
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Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu
Nikoleta Aleksić (2021)... Još jedan od gasova čije se curenje može detektovati ovom metodom je metan (CH4). Ima ga u rudnicima uglja, u vulkanskim i barskim gasovima, kao i u drugim organskim supstancama. U atmosferi koja „nije zagađena“ procenat metana je zanemarljiv. Metan je komponenta prirodnog gasa koji zagreva domove ...
... „Benska Bara“ čiji toplotni izvor čine tri kotlovske jedinice kapaciteta od po 8,2 MW (24,6 MW), a kao pogonsko gorivo koristi se prirodni gas [27]. Sagorevanjem prirodnog gasa ne dolazi do emisije SO2, osim kada sadrži male količine H2S [28]. Najveća masa prašine akumulirana u jednom danu po cm2 površine ...
... jedinice. Prirodno izbijanje ili isparavanje gasova geofizičkog porekla u rudnicima, vulkanima, geotermičkim oblastima, močvarama, kao i iz organskih supstanci u poljoprivredi, kilometrima dugački gasovodi, takođe su interesantni za ocenu. Prednosti termografske metode pri detekciji curenja gasova U ...Nikoleta Aleksić. "Mikroelementi u uljnim šejlovima Aleksinca i njihov uticaj na životnu sredinu" in VIII Memorijalni naučni skup iz zaštite životne sredine „Docent dr Milena Dalmacija“, 2021, Prirodno-matematički fakultet, Novi Sad (2021)
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Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels
Irina Zahirovic, Dušan Danilović, Milica Šuput Vranjin, Miloš Tripković. "Laboratory Testing of Nanosilica- Reinforced Silicate and Polyacrylamide Gels" in SPE Journal (2023)
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The State and Perspective of Belgrade District Heating System Development
Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić (2019)District heating (DH) system in Belgrade provides energy for heating of more than 21 million m2 in households (app. 50% of all households), public, commercial and industry sectors. Public Utility Company “Beogradske elektrane” is responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy of the PUC - the introduction of ...... Public Utility Company “Beogradske elektrane” is responsible for all segments of the DH system operation. The system is fueled mostly by natural gas. The share of renewables is negligible. The research analyzes effects of implementation of two main projects proposed in the Development Strategy ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Fethi Silajdžić, Samra Arnaut, Goran Đelić . "The State and Perspective of Belgrade District Heating System Development" in 5th International Conference on Smart Energy Systems, Copenhagen : Aalborg Universitet (2019)
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Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin
Filip Anđelković, Dejan Radivojević (2018)... Tertiary, while the Lower Pontian shales were found to contain only gas-prone source rocks (Kostić, 2012). Since the Sarmatian sediments are mostly missing or have very restricted thickness in depressions close to the biggest oil and gas fields in Serbia (Ivanišević and Radivojević, 2018; Radivojević ...Filip Anđelković, Dejan Radivojević. "Rift sequence stratigraphy and its contribution to source rock understanding – Serbian part of Pannonian Basin" in CBGA, Salzburg, Austria, Septembar 10-13, 2018, Bulgarian Academy of Science (2018)
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An intelligent hybrid system for surface coal mine safety analysis
Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić. "An intelligent hybrid system for surface coal mine safety analysis" in Engineering Applications of Artificial Intelligence (2010)
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Одређивање оптималних параметара цевовода за двофазни проток
Николина Ћурчић (2024)Eфикасно управљање протоком флуида је кључно за оптимизацију перформанси система и обезбеђивање оперативне сигурности. Двофазни ток, који подразумева истовремено присуство течне и гасне фазе унутар цевовода и измењивача топлоте, представља један од најсложенијих аспеката динамике флуида. Овај феномен намеће јединствене изазове који захтевају дубоко разумевање и прецизно планирање. Ефикасно управљање двофазним током није само кључно за одржавање ефикасности система, већ је и неопходно за спречавање потенцијалних проблема као што су повећана ерозија, неочекиване флуктуације притиска и ризици по безбедност. У ...... Logistic, B. (n.d.). Transport nafte i gasa cevovođdima/gasovodima. Retrieved from Beocontrol Logistic: https:/fransportrobe.com/transport-nafte-gasa/transport- nafte-gasa-cevovodima-gasovodima/ NaturalGas. (2013, September 20). 7The Transportation of Natural Gas. Retrieved from NaturalGas.org: ...
... (2016, June 14). An Introduction to Oil and Gas Pipelines. Retrieved from FracTracker Alliance: https://www.fractracker.org/2016/06/introduction-oil-gas- pipelines/ Arya, A. K. (2022). A critical review on optimization parameters and techniques for gas pipeline operation profitability. owrma! ...
... com/pipe-flow-vs-pressure- relationship-calculate/ 37 Kurth, N. (2019, May 21). 7wo Phase Flow Liquid-Gas System Design. Retrieved from FluidFlow: · https://blog.fluidflowinfo.com/two-phase-liquid-gas-flow-system- design Liu, H. (1998, September 8). Pipeline technology. Retrieved from Britannica: ...Николина Ћурчић. Одређивање оптималних параметара цевовода за двофазни проток, 2024
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Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu. "Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)" in Environmental Earth Sciences, Springer Science and Business Media LLC (2020). https://doi.org/10.1007/s12665-020-08910-x
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Daljinsko merenje temperature na bušotinskom cevovodu
Aleksa Petrović (2024)Ovaj diplomski rad analizira daljinsko merenje temperature na bušotinskim cevovodima, koje je od velike važnosti za kontrolu i nadzor nad industrijskim procesima posebno u ekstremnim uslovima kao što su visoke temperature i pritisci u bušotinama. Opisane su različite vrste temperaturnih senzora, kao što su termoparovi, bimetalni i otpornički termometri, kao i senzori na bazi optičkih vlakana, koji se primenjuju za kontinualno merenje temperature duž cevovoda u realnom vremenu. Daljinsko merenje temperature omogućava pravovremeno otkrivanje curenja i nepravilnosti, što je ...temperatura, daljinsko merenje temperature, bušotinski cevovodi, DTS sistemi, infracrveni senzori, bežične mreže... uticaj na stanja materijala, kao što su agregatna stanja i hemijske reakcije. Ova fizička veličina je ključna za razumevanje i kontrolu mnogih prirodnih i tehnoloških procesa, od atmosferskih promena do industrijskih reaktora. Razvoj instrumenata za merenje temperature ima dugu istoriju. Još u ...
... Otpornost na okruženje i uslovi u kojima se senzor koristi. U ekstremnim uslovima, kao što su visoke temperature, pritisci ili prisustvo korozivnih gasova, koriste se specijalizovani senzori za distribuirano merenje temperature. . Cena ı složenost sistema: U mnogim slučajevima, izbor metode zavisi ...
... Manometarski termometri Rade na principu promene pritiska unutar zatvorene posude u zavisnosti od temperature. Koriste različite medije kao što su gasovi, tečnosti ili isparljive supstance. Promena pritiska se prenosi na pokazivač, koji pokazuje temperaturu objekta. Ovi termometri su posebno korisni ...Aleksa Petrović. Daljinsko merenje temperature na bušotinskom cevovodu, 2024
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Избор одговарајуће механичке методе
Анастасија Мирјанић (2024)Експлоатација нафте и гаса кључна је за задовољење глобалних енергетских потреба. Различите методе се користе за ефикасно вађење тих природних ресурса из земљe. Механичке методе експлоатације, које укључују различите врсте пумпи и компресора, играју значајну улогу у овом процесу. У нафтној индустрији, ефикасно вађење нафте и гаса зависи од избора одговарајуће технологије пумпања. Две од најраспрострањенијих технологија су дубинске пумпе са клипним шипкама (енгл. Sucker rod pumps- SRP) и електричне потапајуће пумпе (енгл. Electrical submersible pump- ESP). Овај завршни рад ће ...Анастасија Мирјанић. Избор одговарајуће механичке методе, 2024
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Prikaz sanacije flotacijskog jalovišta Veliki Majdan nakon akcidenta
Kostović Milena, Vlajić Dijana, Kostović Nebojša, Mitić Saša. "Prikaz sanacije flotacijskog jalovišta Veliki Majdan nakon akcidenta" in Zbornik radova I Simpozijuma: Odsumporavanje dimnih gasova i IV Savetovanja: Deponije pepela, šljake i jalovine u termoelektranama i rudnicima sa međunarodnim učešćem, Palić, Srbija:Privredna komora Srbije (2012): 299-302
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Application of machine learning for diagnosing the operation of a deep well pump in oil production
Maja Trikić (2024)This paper will thoroughly examine how machine learning can improve the diagnosis of deep well pumps by analyzing the role and function of the pumps, dynamograms, sensor technologies, and diagnostic methods.Our analysis will provide insights into modern techniques and approaches for enhancing the performance and reliability of oil production systems, targeting cost reduction and increased operational efficiency.deep well pump, dynamograms, machine learning, diagnostics of operating coditions,Random Forest, XGBoost... potential energy of the fluid. Free gas in the fluid can negatively affect the pump's efficiency, especially at low pressure and during gas-liquid two-phase flow at the bottom of the well. To minimize the detrimental effects of gas, gas anchors are used to separate gas bubbles from the oil, thereby ...
... study. 57 Type of Operation Modes and Automation Fails Number of Cards Normal 10,282 Gas interference 260 Fluid pound 38,298 Traveling valve leak 67 Standing valve leak 172 Rod parted 29 Gas lock 6 Tubing anchor malfunction 30 Sensor fault—rotated card 895 Sensor fault—line card ...
... balance via counterweights on the main lever and balance beam. 2.1.2 Subsurface equipment for deep well pumping includes: a) Downhole pump b) Gas anchor c) Tubing anchor d) Sucker rods e) Tubing The downhole pump converts mechanical work into potential energy by increasing the fluid pressure ...Maja Trikić. Application of machine learning for diagnosing the operation of a deep well pump in oil production, 2024
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Ventex: an expert system for mine ventilation systems analysis
roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...Nikola Lilić, Ranka Stanković, Ivan Obradović. "Ventex: an expert system for mine ventilation systems analysis" in Mining Technology, United Kingdom (1997)
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Towards more sustainable district heating systems in Serbia - Options and obstacles
The major share of energy consumed in the building environment is dedicated to meeting heating needs, which makes this sector one of the key players in the transformation of the whole energy system. The accurate approach to the transition process assumes acting on both the demand and supply sides. Lately, the supply side has received more attention, as its transformation is one of the key steps of the energy transition process. District heating systems are recognized as substantial contributors ...energetska tranzicija, daljinsko grejanje, dekarbonizacija, obnovljivi izvori energije, prepreke, SrbijaMarija Živković, Boban Pavlović, Dejan Ivezić, Miloš Tanasijević, Dejan Stojanović . "Towards more sustainable district heating systems in Serbia - Options and obstacles" in Conference on Sustainable Development of Energy, Water and Environmental Systems, Rome, September 8-12, 2024, Zagreb : Faculty of Mechanical Engineering and Naval Architecture (2024)
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Applicability of calculated vitrininte reflectance for maturity assessment of organic matter of source rocks from hyperthermal basin (Banat Depression, Serbia)
Stojanović Ksenija, Kostić Aleksandar, Mrkić Sanja. "Applicability of calculated vitrininte reflectance for maturity assessment of organic matter of source rocks from hyperthermal basin (Banat Depression, Serbia)" in Proceedings, 8th International Conference “Oil and Gas Chemistry”, September 24-28, 2012, Tomsk, Russia: (2012): 116-119
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Exploration, production pace faster in Serbia, Bosnia and Herzegovina
Karović-Maričić Vesna, Danilović Dušan, Batalović Veselin, Leković Branko. "Exploration, production pace faster in Serbia, Bosnia and Herzegovina" in Oil & Gas Journal 110 no. 1A, Tulsa:Penwell (2012): 64-69
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A hundred years of Milutin Milanković's climate change theory - geological implications
Dejan Radivojević (2020)Миланковићева теорија циклуса објављена пре сто година је најважнија теорија у наукама које проучавају климу и имала је велики утицај на дисциплине које се баве Земљом. Ипак, његов рад је чекао више од педесет година да би добио потврду. Може се рећи да Миланковићев рад највећи утицај на геологију има у изради астрономске временске скале, подршци хипотези континенталног дрифта и палеоклиматологији. Добри резултати примене астрономске временске скале на неогене седименте иницирали су примену ове методе у мезозојским и у последње ...циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт... сунчевим зрачењем“. Иако дуго оспоравана, његова теорија о климатским про - менама је поред климатологије имала изузетно велики утицај и на друге природне науке укљу - чујући геологију. Миланковић је рођен 1879. године у Даљу, тадашњој Аустроугарској монархији, а високо образовање и докторат стекао ...
... климатских промена омогућава људима, као јединим бићима свесним свог утицаја на њих, да делују превентивно и предузму све мере у циљу смањења емисије гасова стаклене баште. Кључне речи: циклостратиграфија, астономска временска скала, геолошка временска скала, климатске промене, континентални дрифт. ...
... lease of methane hydrate from oceanic sediments caused by massive volcanic eruptions. Recent study by GINGERICH (2019) compared the rate of greenhouse gas accumulation in the PETM to modern climate change today (Fig. 10) and find out that anthropogenic carbon emissions at the present are occurring 9–10 ...Dejan Radivojević. "A hundred years of Milutin Milanković's climate change theory - geological implications" in Geološki anali Balkanskoga Poluostrva, Univerzitet u Beogradu, Rudarsko geološki fakultet (2020). https://doi.org/10.2298/GABP201125011R
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Lowest possible flow temp. offers savings vs. pour point
Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav (2013)Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Batalović Veselin, Živković Marija, Crnogorac Miroslav. "Lowest possible flow temp. offers savings vs. pour point" in Oil & Gas Journal 111 no. 8, Houston:PennWell Corp (2013): 86-90. https://doi.org/10.1016/j.energy.2014.02.017