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Упит dcterms_subject_txt:power plants

141 items

  • Business Models for Small-scale Biomass Projects Development

    Dejan Ivezić, Miodrag Gluščević, Marija Živković (2019)
    Biomass is recognized as the most promising renewable energy source in Serbia. The share of biomass in Serbian final energy consumption is over 10%, but mostly related to traditional use in stoves and ovens. One of the main obstacles for wider implementation of contemporary biomass facilities is the inexperience of consumers and stakeholders in the implementation of “innovative” business models, especially in the cases of small-scale projects. In this paper, three different business models (public utility company, energy cooperative ...
    ... of the biomass boilers, will cover less than 10% of the total annual heat supply of the DH grid. The total investment sum for the new biomass DH plants adds up to 280,000 EUR (excl. VAT). The new biomass DH system amortizes dynamically within 10.5 years. The internal rate of return of the biomass DH ...
    ... has the opportunity to participate, as a tenderer, in the process of public procurement of wood chips for utilization in boilers and/or cogeneration plants (depending on the selected solution). Certainly, local households, individually or jointly in a cooperative or other legal entity, should not have ...
    ... biovill.eu/ [4] Jerotić, S., D. Ivezić, M. Gluščević, H. Tretter, S. Athavale, M. Höher, Report on the opportunities to set up biomass based CHP plants and small district heating networks in the target village Kostojevići, Serbia, BioVill project, available at http://biovill.eu/wp- ...

  • Self-Engineering: Possibilities for Maintenance Operations in the Mining Machines Industry

    Steven Manders, Milorad Pantelić, Vladimir Milisavljević, Alberto Martinetti (2021)
    Self-engineering is a relatively new branch of knowledge that aims to understand how systems could “autonomously” re-configure or repair themselves without the intervention of the operators. A direct field of application is within the maintenance spectrum. Having systems or machines capable of self-detecting or even self-repairing could represent a game-changer, in capital asset fields such as the mining industry in particular. This paper aims to investigate the possible benefits and challenges of self-engineering / self-maintenance concerning mining machines, specifically bucket-wheel ...
    self-engineering, self-maintenance, maintenance operations, mining industry, bucket-wheel excavator, gearbox revitalization

  • An example of karst catchment delineation for prioritizing the protection of an intact natural area

    Vesna Ristić Vakanjac, Zoran Stevanović, Aleksandra Maran Stevanović, Boris Vakanjac, Marina Čokorilo Ilić (2015)
    Проучавано је карстни извор Перућац као главни дрен подручја планине Таре у западној Србији у циљу процене његовог режима отицања, резерви воде и дефинисања његове сливне површине. Извор се налази у североисточној, унутрашњој зони класичног динарског крша, коју карактерише доминантно проширење висококарстификованих тријаских кречњака, слабо развијена хидрографска мрежа са много понора и густе шуме. Тара је један од пет националних паркова у Србији. Циљ рада је био да се идентификује заштитна зона високог приоритета у оквиру очуваног природног подручја ...
    карстна издан, сливна површина, делинеација, заштита, менаџмент

  • 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 ...
    energy related emissions, Serbia
    ... of total primary energy consumption in 2017 Coal is mainly used for electricity generation i.e. 88% of total coal energy is utilized in thermal power plants or CHPs. Structure of electricity generation by source is presented in Figure 3. In average about ¾ of electricity in Serbia is generated in TPPs ...
    ... 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% Transport 25.73% Households 33.29% Agriculture 2.21% Public and commercial 11.15% Electricity27 ...
    ... indicates that about 60% of annual carbon dioxide emission in is a consequence of electricity generation in TPPs. Bearing in mind low efficiency of plants and the feeding fuel-lignite, in average 1kg of carbon dioxide is emitted during production of 1kWh of electricity in TPPs. Figure 5. Carbon dioxide ...

  • Application of stochastic models for mine planning and coal quality control

    Dejan Stevanović, Božo Kolonja, Ranka Stanković, Dinko Knežević, Mirjana Banković (2014)
    ... impacts boiler operations and subsequent power produced and emissions, utilities had no economic interest in monitoring or managing coal quality. It is preferred that feeds the plants coals whose properties, especially that of calorific value, conform to the power plant design and whose sulfur content ...
    ... optimisation of sulfur emis- sions from desulfurization power plants [2]. However, decisions about coal homogenization must deal with uncertainty and variability in coal properties, and with the effect of off-design coal characteristics on power plant performance and cost. According to Shih and Frey ...
    ... blending and homogenization piles and geostatistical simulations are described [6, 7]. US power stations have experienced reduction in SOx emis- sions, by up to 20%, by homogenizing coal feeds to power plants [8]. Kriging technique is a very good estimator, but it is not adequate to predict the uncer- ...

  • The Content of Toxic Metals in Agricultural Produce near a Coal Mine: Case Study KCB in Lazarevac, Serbia

    Ana Koprivica, Čedomir Beljić, Boris Vakanjac, Vesna Ristić Vakanjac, Marina Čokorilo Ilić (2018)
    Праћење и анализа концентрација токсичних метала (олово и кадмијум) у земљишту и усевима указују на то да пољопривредно земљиште у Србији углавном није загађено, а квалитет земљишта је природно добар. Због тога су таква земљишта погодна за органску пољопривреду. Сви уочени случајеви контаминације токсичним металима су само локалне природе, а резултат су ђубрива и пестицида, комуналног отпада, издувних гасова, оближњих производних објеката, топионица, рудника, јаловишта итд. Локације овог типа морају бити редовно прати и процењује статус земљишта и усева. ...
    токсични метали, олово, кадмијум, земљиште, усеви, одрживи развој

  • Evaluation of the effects of wastewater heat pump integration into district heating systems by simulation

    Dejan Ivezić, Marija Živković, Dimitrije Manić, Aleksandar Madžarević, Boban Pavlović, Dušan Danilović (2023)
    The integration of wastewater heat pumps (using purified water) in district heating systems is analyzed in this paper. The simulation procedure is proposed to analyze the impacts of stochasticity of purified water temperature and flow to heat pump integration and operation. The analysis includes calculation of the daily and seasonal coefficient of performance, as well as fossil fuel savings and CO2 emission reduction due to wastewater heat pump use. The proposed procedure is implemented for the case study in ...
    otpadne vode, toplotna pumpa, daljinsko grejanje, simulacija

  • Influence of paleoenvironmental conditions on distribution and relative abundance of saturated and aromatic hydrocarbons in sediments from the NW part of the Toplica basin, Serbia

    Nikola Burazer, Aleksandra Šajnović, Nebojša Vasić, Milica Kašanin-Grubin, Dragana Životić, João Graciano Mendonça Filho, Predrag Vulić, Branimir Jovančićević (2020)
    Stratigraphy,Economic Geology,Geology,Geophysics,Oceanography

  • Energetska efikasnost elektromotora na površinskim kopovima

    Snežana Aleksandrović, Ilija Jeftenić (2023)

  • Palaeoflora of Kamenica (Pranjani Basin, western Serbia)

    Zorica Lazarević, Ljubica Milovanović, Jelena Milivojević, Ivana Vasiljević (2019)
    Palaeofloras of the Paleogene in Serbia are relatively rare, especially in comparison with floras from Neogene sediments. Most Paleogene phytoas sociations from the territory of Serbia existed in a dry and warm climate. The youngest Paleogene phytoassociation originates from the Pranjani Basin (Western Serbia), locality Kamenica. The age of this palaeoflora is determined as Late Oligocene. This fossil plant assemblage is different from other Paleo gene phytoassociations.The palaeoflora from Kamenica is characterized with leaf imprints larger than in other ...
    макрофлора, млађи олигоцен, Прањански басен, Каменица
    ... the peridotite-serpentine rock. above them is a sequence of alternating sandstones, con- glomerates and marlstones. Well preserved remains of fossil plants and fish have been found in these sediments. The second horizon is a “multicoloured series”,of a depth of about 100 m. There is no ob- served direct ...
    ... (aN - đeLKOvIć, 1989) was found in the first horizon’s marls. This finding confirms the Oli gocene age of the sediments. The remains of the fossil plants, which are the subject of this paper, originate from the same sediments. Based on fossil fish finding and comparison with other similar early Miocene ...

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... gas. There are numerous applications of the gas generated from the UCG process. It could be utilized as a fuel in thermal power plants (TPP), as well as district heating plants, in chemical industry, in systems for the hydrogen generation, and also for obtaining petroleum products as fuels. In Australia ...
    ... explored. Solar power is proposed to be utilized to providing necessary onsite clean energy generation option, which could deliver on- site power for running dedicated loads of the UCG process equipment. Ćirikovac deposit near TPP Kostolac is considered to house a dedicated photovoltaic power plant that ...
    ... almosphere in comparison with traditional coal com- bustion. In addition, complete underground coal gasification power requirements could be ofjset by the onsite solar photovoltaic power plant, which furthermore enhances environmental concerns of the overall coal utilization. Key words: coal, ga ...

  • Proizvodnja električne energije iz elektrana na ugalј i prateća emisija CO2: komparacija EU-27 i Srbije

    Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miroslav Crnogorac (2023)
    Velike elektrane su i u trećoj deceniji 21. veka i dalјe odgovorne za više od polovine proizvodnje električne energije u Evropi. U svom radu pretežno koriste fosilna goriva, što rezultira emisijom zagađujućih materija u vazduh. Stoga, zahvalјujući direktivama EU, kao i poremećajima na tržištu, emisije uglјen-dioksida iz velikih postrojenja za sagorevanje u EU-27 intenzivno se smanjuju u poslednje dve decenije. Iako je upotreba uglјa, posebno u zemlјama Evropske unije, u stalnom padu, ima prostora za dodatno smanjenje. Autori su ...
    CO2, emisija, ugalј, termoelektrane, EU-27, Srbija

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • Towards Automatic Definition Extraction for Serbian

    Ranka Stanković, Cvetana Krstev, Rada Stijović, Mirjana Gočanin, Mihailo Škorić (2021)
    U radu su prikazani preliminarni rezultati automatske ekstrakcije kandidata za definicije rečnika iz nestrukturiranih tekstova na srpskom jeziku u cilju ubrzanja razvoja rečnika. Definicije u rečniku Srpske akademije nauka i umetnosti (SANU) korišćene su za modelovanje različitih tipova definicija (opisnih, gramatičkih, referentnih i sinonimskih) koje imaju različite sintaksičke i leksičke karakteristike. Korpus istraživanja sastoji se od 61.213 definicija imenica, koje su analizirane korišćenjem morfoloških e-rečnika i lokalnih gramatika implementiranih kao pretvarači konačnih stanja u paketu za obradu korpusa otvorenog ...
    ... вишегодишњих зељастих украсних биљака (orchid N in pl.: family of perennial herbaceous ornamental plants) textbooks Орхидеје су вишегодишње зељасте биљке,... (Orchids are perennial herbaceous plants, ...) 2. different SASA алкохоличар N човек који се одао пићу; (alcoholic N a man who indulges ...
    ... derived from brother) 15 (3) animals 2115 1564 (74%) арнаут N назив за помамна, љута коња; (arnaut N name for a mad, angry horse;) 16 (3) plants 1371 1005 (73%) брусница N шумска ниска жбунаста биљка… (cranberry N low shrubby forest plant…) 17 (3) plant and animal organs 84 56 (67%) ...
    ... by the definition by substitution with related words; ex: безвлашће… стање без државне власти, анархија, безакоње (powerlessness, ... state without power of a state, anarchy, lawlessness). The closest senses can be separated just by semicolons, thus representing a single definition; eg: годишњак…периодична ...

  • Study of the Synergetic Effect of Co-Pyrolysis of Lignite and High-Density Polyethylene Aiming to Improve Utilization of Low-Rank Coal

    Ivan Kojić, Achim Bechtel, Nikoleta Aleksić, Dragana Životić, Snežana Trifunović, Gordana Gajica, Ksenija Stojanović (2021)
    Polimeri i plastika, opšta hemija
    ... number of samples possessed certain potential for fluidized bed gasification [2,9]. Most lignite is used in thermal power plants. In contrast to lignite consumption in thermal power plants, where lignite burns completely at high temperatures and where air pollution is controlled using electrostatic and ...
    ... higher than those from power plant coal boilers [10,11]. The recommendation from the World Health Organization (WHO) is the following: “Unprocessed coal should not be used as a household fuel” [12]. However, a relatively high amount of low-rank coal in addition to thermal power plants is used in households ...
    ... [CrossRef] 68. Leary, O.M.H. Carbon isotope fractionation in plants. Phytochemistry 1981, 20, 553–567. [CrossRef] 69. Collister, J.W.; Rieley, G.; Stern, B.; Eglinton, G.; Fry, B. Compound-specific δ13C analysis of leaf lipids from plants with differing carbon dioxide metabolism. Org. Geochem. 1994 ...

  • Geoenvironmental Investigations at a Smelter Location in Bor (Serbia)

    Petar Papić, Zvonimir Milijić, Jana Stojković, Jovana Milosavljević, Maja Todorović, Marina Ćuk, Željko Kamberović (2014)

  • Actual contamination of the Danube and Sava rivers at Belgrade (2013)

    Milan Antonijević, Marija Arsović, Josef Cáslavský, Vesna Cvetković, Predrag Dabić, Mladen Franko, Gordana Ilić, Milena Ivanovic, Nevena Ivanović, Milica Kosovac, Dragana Medić, Slobodan Najdanović, Milica Nikolić, Jovana Novaković, Tatjana Radovanović, Djurdjina Ranić, Bojan Šajatović, Gorica Špijunović, Ivana Stankov, Jelena Tošović, Polonca Trebse, Olivera Vasiljević, Jan Schwarzbauer (2014)
    rečni sistemi, stanje zagađenja, organski zagađivači, teški metali, skrining analize, non-target screening
    ... sidered a major threat to aquatic organisms including fish. The most common anthropogenic sources of metals are industrial plants, petroleum contamination, waste water treatment plants and sewage disposal.5 Metal ions can be incurpor- ated into the food chains and concentrated in aquatic organisms to a ...
    ... Santa Clara, CA, USA) with excitation beam source tuned at 647 nm providing 100 mW power. An He–Ne laser (Melles Griot, Uniphase, model 1103P, Carlsbad, CA, USA) provided the probe beam at 632.8 nm with 2 mW of power. Non-target screening Extraction. Sequential liquid/liquid extraction was preformed ...
    ... a level that affects their physiological state. Trace metals such as Zn, Cu and Fe play a bio- chemical role in the life processes of all aquatic plants and animals; therefore, they are essential in the aquatic environment in trace amounts.6 One of the major problems that heavy metals cause with respect ...

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods