Претрага
3072 items
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Zbirka rešenih zadataka iz termodinamike
Marija Živković, Aleksandar Madžarević (2023)... Stanje 2 Iz jednačine stanja idealnog gasa sledi: Stanje 3 Skica uz zadatak 39: Prikaz procesa u p-v dijagramu 116 ZBIRKA REŠENIH ZADATAKA IZ TERMODINAMIKE 56. Dimni gas molarnog sastava 12% CO 2 , 6% H 2 O , 5% O 2 i 77% N 2 , počet- nog stanja 0,9 MPa i 1000 °C izentropski ekspandira u ...
... pare. Za maseni protok dimnih gasova 15000 kg/h, izračunajte snagu gasne turbine i maseni protok rashladne vode. REŠENJE: Molarni sastav je jednak zapreminskom sastavu, pa je: Gasna konstanta smeše je: Proces ekspanzije gasa u turbini je izentropski. Stanja 1 i 2 zadovoljavaju jednačinu izentrope: ...
... z Skica uz zadatak 1 Jednačina stanja idealnog gasa u mehuru za stanje 1 je:1 1 = Pritisak vazduha u mehuru u stanju 1 je:1 = + z gde je atmosferski pritisak i iznosi 101325 Pa, a g ubrzanje sile zemljine teže Jednačina stanja idealnog gasa u mehuru za stanje 2 je: Pritisak vazduha u mehuru ...Marija Živković, Aleksandar Madžarević. Zbirka rešenih zadataka iz termodinamike, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2023
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Efikiasnost distribucije i korišćenja prirodnog gasa u domaćinstvima
Dejan Brkić (2009)Dejan Brkić. Efikiasnost distribucije i korišćenja prirodnog gasa u domaćinstvima, Beograd:Rudarsko Geološki Fakultet, 2009
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Effect of gas-lift on liquefied petroleum gas (LPG) product yield: A case study of Chinarevskoe gas treatment unit (Kazakhstan)
Grubač Branko, Šević Snežana, Živković Marija. "Effect of gas-lift on liquefied petroleum gas (LPG) product yield: A case study of Chinarevskoe gas treatment unit (Kazakhstan)" in Journal of Petroleum Science and Engineering 165, :Elsevier (2018): 586-595
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Effect of natural gas composition on methane number: A case of gas reservoirs in Serbia
Natural gas is considered as the most environmentally acceptable fossil fuel, thus it is an alternative to petroleum derivate, dominantly used in internal combustion engines. Physical properties of a fuel as well as behavior during combustion process are affected by its composition. This article presents analysis of effect of natural gas composition on methane number (MN), conducted for natural gas deposits in Serbia. For empirically determination of MN: California air resources board (CARB) method and Linear and Anstalt für ...Marija Živković, Milica Ivić, Dejan Ivezić, Aleksandar Madžarević. "Effect of natural gas composition on methane number: A case of gas reservoirs in Serbia" in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects (2017). https://doi.org/10.1080/15567036.2017.1403518
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The safety of Natural Gas Use - Bezbednost korišćenja prirodnog gasa
Ristanović Siniša, Ivezić Dejan, Tanasijević Miloš. "The safety of Natural Gas Use - Bezbednost korišćenja prirodnog gasa" in Podzemni radovi - Underground Mining Engineering 22, Beograd :Univerzitet u Beogradu - Rudarsko-geološki fakultet (2013): 63-70
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Efekti potencijalnog korišćenja postrojenja za preradu otpadnih voda kao energetskih izvora u sistemima daljinskog grejanja u Srbiji
Системи даљинског грејања постоје у 57 градова и општина у Србији и доминантно користе фосилна горива. У овим урбаним срединама су изграђени, или се планира градња система за пречишћавање отпадних вода. У раду је размотрена (са еколошког и енергетског аспекта) могућност додатног, енергетског коришћења топлоте пречишћене воде у СДГ, применом топлотних пумпи. На примеру Шапца је извршено поређење постојећег СДГ са системом који би применом топлотних пумпи искористио енергетски потенцијал система за пречишћавање отпадних вода. Добијени индикатори су послужили ...... укупне потрошње енергије, укључујући и енергију за производњу електричне енергије износи око 4%. Увођењем топлотних пумпи постигло би се и смањење директне емисије угљендиоксида од 13%, док би укупно смањење емисије угљендиоксида (укључујући и емисију при производњи електричне енергије) износило 4%. ...
... директних и укупних емисија за све разматране загађујуће материје - Побољшање вредности свих разматраних енергетских и еколошких индикатора. Најбољи ефекти смањења емисије се постижу у СДГ која користе угаљ, а потом и мазут. Међутим, анализа је указала и да високо учешће угља у производњи електричне ...
... започета 1961. године у Београду и Новом Саду, 1962. у Суботици и Крагујевцу, а затим и у многим другим градовима, тако да сада у 57 градова постоје изграђени системи даљинског грејања (СДГ). Укупна инсталисана топлотна снага котлова износи више од 6,500 GW. Производња топлотне енергије у системима ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević . "Efekti potencijalnog korišćenja postrojenja za preradu otpadnih voda kao energetskih izvora u sistemima daljinskog grejanja u Srbiji" in Stručno-naučna konferencija TOPS 2019, Poslovno udruženje toplana Srbije (2019)
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The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector
Natural gas is used for the production of almost 20% of total energy today. The natural gas security of the Republic of Serbia is an urgent strategic, political and security issue. Serbia is one of the most vulnerable countries in Southeast Europe, because it only has one supply route. This study is a contribution to efforts to better understand the factors affecting energy security through the implementation of a new methodology based on the fuzzy–AHP synthesis model for measuring ...... LEGEND Diameter gas pipeline D>20’’ Diameter gas pipeline 10’’20’’ Diameter gas pipeline<10’’ Planed gas pipelines Gas pipeline PE Srbijagas Gas pipeline Yugorosgas Main measuring regulation station Input transmitter station Output ...
... routes (S2). The index provides a measure of diversification of import supply routes based on the natural gas capacities available for supply. The index is calculated as follows [57]: IDIRS = border x ∑ i ( TI ∑ k %TIkborder Xi) 2 + ∑ m (%LNG terminal)2 (37) where: Symmetry 2020, 12, 908 26 of ...
... requirements of natural gas. 3.2.1. Scenarios of infrastructure development Diversification of sources and directions of the natural gas supply, with establishing a domestic and regional natural gas market and providing the secure supply of natural gas are important goals in the natural gas sector of Republic ...Aleksandar R. Madžarević, Dejan D. Ivezić, Miloš L. Tanasijević, Marija A. Živković. "The Fuzzy–AHP Synthesis Model for Energy Security Assessment of the Serbian Natural Gas Sector" in Symmetry, MDPI AG (2020). https://doi.org/10.3390/sym12060908
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Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs
John Nyame (2024)The importance of mitigating the effects of global climate change has necessitated an in-depth exploration of innovative strategies to reduce carbon dioxide (CO2) emissions. Among these strategies, Carbon Capture, Utilization, and Storage (CCUS) has emerged as a promising and transformative solution. This master thesis delves into the diverse realm of CCUS processes, aiming to unravel the positives challenges, and opportunities within this dynamic field. The analysis begins with a systematic examination of carbon capture technologies, encompassing post-combustion, pre-combustion, and oxy-fuel combustion ...... to storage stages. Post-combustion capture CO) containing Fuel ——> flue gas | Air_) CO; for storage Oxy fuel combustion Fuel i O~, CO- for storage Pre-combustion capture Fuel i i CO i Pokaana — | O»/air i. ? for storage Figure 2.1 Three basic carbon capture approaches [27] Carbon ...
... Desalination —— Fresh water :I“"”:" —E y utilization MACO. [ , Sulfur Nea water l?uullnn/.m w — — CaSO, utilization Flue un(( O„SO,) —— Water treatmeni —— HBauification — Gas treatment — Utilization Figure 3.2 Desalination process 3.2. Enhanced Oil Recovery Enhanced oil/gas recovery refers to the ...
... Enhanced Oil/Gas Recovery al aaaaaaaaaaaaaaaaaaaaaaaeaaaaaaaaaeaaaaeaaaaaaeaaaaeaaaaeaeaaeaeaaaaaaaaaeaaeaaaaaaeaeaaeaeeaeeeeee 26 4.3. Replacement of Methane in Coal Beds .....aanaaaaaaaaaaaaaaaaaaaaaaeaaaaaaaaaeaeaaeaeaaaaeaaaaeaaaaeaaaaeaeaaeaeaaeeeeee 27 PG NB OTJ NLJ OJ Kojig:1i1 K eg:C0 i 3 f T ...John Nyame. Analysis Of the Process Of Carbon Capture Utilization And Storage In Underground Reservoirs, 2024
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The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments
Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević (2013)The objective of the study was to determine the origin and type of organic matter (OM) of the Tisza recent sediments along the distance of 153 km through the territory of Serbia. For this purpose group organic-geochemical parameters and biomarker compositions were used. All samples contain approximately same amount of OM, which was deposited under uniform, slightly reducing conditions. Based on the distribution of n-alkanes, the origin and type of OM could not be precisely estimated. However, n-alkane patterns ...... at: www.shd.org.rs/jscs/ 612 ŠTRBAC et al. генерално потиче од мазута из танкера, услед интензивног речног транспорта и, у мањој мери, од сирових нафти из нафтних поља Елемир и Русанда. (Примљено 14 јуна, ревидирано 28. августа, прихваћено 29.августа 2013) REFERENCES 1. K. E. Peters, C. C. Walters ...
... and methanol (1:1 volume ratio). The saturated hydrocarbons were analyzed by gas chromatography–mass spectrometry (GC–MS). A gas chromatograph Agilent 7890A GC (H5-MS capillary column, 30 m×0.25 mm, He carrier gas 1.5 cm3 min-1, FID) coupled to an Agilent 5975C mass selective detector (70 eV) ...
... Vitorović, Water Air Soil Pollut. 183 (2007) 225 4. V. Beškoski, G. Gojgić-Cvijović, B. Jovančićević, M. Vrvić, Gas Chromatograph in Environmental Sciences and Evaluation of Bioremediation, in Gas Chromatography – Biochemicals, Narcotics and Essential Oils, B. Salih, Ö. Çelikbıçak, Eds., InTech, Rijeka ...Snežana Štrbac, Gordana Gajica, Aleksandra Šajnović, Nebojša Vasić, Ksenija Stojanović, Branimir Jovančićević. "The use of biological markers in determination of origin and type of organic matter in the Tisza river sediments" in Journal of Serbian Chemical Society, Beograd : Srpsko hemijsko društvo (2013). https://doi.org/10.2298/JSC130614087S
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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 ...... process gas in scrubbers, then the gas is cleaner and more ener- gy-efficient, since inert gases represent over 70% of syngas. Such purified syngas consists of he 100% CO, H, i CH, mixture, and the thermal power of this clean gas mixture can be 3-4 imes higher than that of untreated gas. The mentioned ...
... blowing the low pressure air. Instead of firing coal layer with the coke at high temperatures, a – — —- 225 – — — Product gas W j ii manifold 75 75 i 75 H ' · H I Drilling -—Q - and preparing || ' Row5 _ ć____ O—- Boreholes ! Figure 2. Plan view of the grid between boreholes [5] ...
... amount of gas will bet 29 mil. mž , which is: T =2900 hours =120days, 7=120days=4months (14) 29.10%3 3 . 3 ; 3 m, =—— ——=241667 ma/days , i. e. 10070m,/h, m\, =10070 m\/h (15) 120 days Sometimes in calculations and various design checks it is sometimes operated with the parameter of the gas production ...David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić. "Valorization of non-balanced coal reserves in Serbia for underground coal gasification" in Thermal Science (2019). https://doi.org/10.2298/TSCI190725390P
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Osnovi hidrogeologije
Petar Dokmanović (2021)... (16.4.2.4) Povišene koncentracije NH4 + mogu da se jave u dubljim izdanima arteskih basena i u vezi su sa ležištima nafte i gasa. Ovaj jon može da bude i neorganskog porekla. Povišene koncentracije nitrit-jona (NO2 -) u PV indikator su prisustva patogenih bakterija, odnosno ...
... materija i gasova, u opsegu od nekoliko do nekoliko desetina mg/l. Antropogena emisija (gasova i čađi) i vulkanska aktivnost “obogaćuju” (zagađuju) atmosferu: ugljen-dioksidom, sumpor-dioksidom, amonijakom, metanom, 117 O s n o v i h i d r o g e o l o g i j e česticama prašine i dr., dok ...
... hladnjaci, bojenje tkanina, prerada celuloze i papira, sušenje drva i cementa i dr. Visoko-termalne (>150 oC) Prizvodnja el.energije; Ostalo: tretiranje minerala, proizvodnja vodonika, etanola, bio-goriva i dr. 137 O s n o v i h i d r o g e o l o g i j e Pojave term(ominer)alnih voda vezane ...Petar Dokmanović. Osnovi hidrogeologije, Beograd : Univerzitet u Beogradu, Rudarsko-geološki fakultet, 2021
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Analiza raspoloživih tehnologija za izdvajanje azota i ugljen dioksida iz prirodnog gasa
Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Leković Branko, Živković Marija, Crnogorac Miroslav (2018)Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Leković Branko, Živković Marija, Crnogorac Miroslav. "Analiza raspoloživih tehnologija za izdvajanje azota i ugljen dioksida iz prirodnog gasa" in Tehnika 69 no. 6, Beograd:Savez inženjera i tehničara (2018): 787-790
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Analiza raspoloživih tehnologija za izdvajanje azota i ugljen dioksida iz prirodnog gasa
Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Leković Branko, Živković Marija, Crnogorac Miroslav (2018)Danilović Dušan, Karović-Maričić Vesna, Ivezić Dejan, Leković Branko, Živković Marija, Crnogorac Miroslav. "Analiza raspoloživih tehnologija za izdvajanje azota i ugljen dioksida iz prirodnog gasa" in Tehnika 69 no. 6, Beograd:Savez inženjera i tehničara (2018): 787-790
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Gasifikacija čvrstih goriva
Anđela Nedeljković (2023)Ovaj rad proizvod je višemesečnog istraživanja i proučavanja literature u oblasti gasifikacije čvrstih goriva. Obrađeni su različiti tipovi goriva koji se koriste u procesu gasifikacije, kao i osnovni tipovi gasgeneratora, njihove karakteristike i primene. Analizirana je podzemna gasifikacija i IGCC sistem kako bi se proširilo razumevanje mogućnosti ovih tehnologija u postizanju ciljeva održivosti i efikasnosti u energetskom sektoru. Istražene su ključne prednosti i izazovi koji proizlaze iz primene gasifikacije u industrijskim i energetskim procesima. Kroz analizu ove tehnologije, cilj ...Anđela Nedeljković. Gasifikacija čvrstih goriva, 2023
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Primena termovizije za merenje i detekciju gasova
Kostić Ivana, Tomić Ljubiša, Damnjanović Vesna, Bondžulić Boban. "Primena termovizije za merenje i detekciju gasova" in International Conference of Eenergy Efficiency and Environmental Sustainability EES2012 Conference proceedings, Subotica, Serbia:University of Novi sad Faculty of Economics Subotica (2012): 157-160. https://doi.org/http://dx.doi.org/10.1016/j.me
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Environmental Energy Security Indicators as Tools for Environmental Protection
Еколошка прихватљивост је постала незаменљив синтезни показатељ сваке валидне енергетске анализе у последње две-три деценије. Енергетска безбедност је у директној хармонији с еколошком прихватљивошћу кроз многе прописане политичке циљеве, економске користи, правне тековине итд. Индикатори еколошке сигурности представљају један од основних елемената за одређивање енергетске безбедности и снажне алате за усмеравање енергетског сектора ка одрживом развоју. У овом раду, анализа је била концентрисана на показатеље енергетске безбедности у области животне средине који се односе на сектор природног гаса у ...енергетска безбедност, еколошки енергетски индикатори, заштита животне средине, еколошка прихватљивост... 3.1 Partial indicator GHG emissions Greenhouse gas emissions are a universal environmental indicator that monitors all anthropogenic impacts that result in greenhouse gas emissions. Effective monitoring and reporting of greenhouse gas emissions is the basis for progress towards achieving ...
... t and natural gas consumption scenarios results in six possible projections for the future development of the natural gas sector in the Republic of Serbia by 2025. 7 4.2 Results and discussion The amount of CO2 emitted is directly related to projections of natural gas consumption. The ...
... of natural gas-fired plants. The needs to reduce partial indicators numerically to emissions per unit of energy produced arises from the idea of comparing, in the most realistic way, scenarios of intensive consumption of natural gas and a reference scenario where the demand for gas is significantly ...Aleksandar Madžarević, Dejan Ivezić, Marija Živković , Miloš Tansijević. "Environmental Energy Security Indicators as Tools for Environmental Protection" in Mining and Environmental Protection-MEP 2019, University of Belgrade, Faculty of Mining and Geology (2019)
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Analiza emisije štetnih gasova pomoćne mehanizacije na površinskim kopovima RB Kolubara
Filip Miletić, Stevan Đenadić, Aneta Kovač, Jovan Ivanović, Predrag Jovančić. "Analiza emisije štetnih gasova pomoćne mehanizacije na površinskim kopovima RB Kolubara" in VI Savetovanje sa međunarodnim učešćem Zaštita životne sredine i održivi razvoj – Rudarstvo i energetika 2018, 28-30. mart, 2018, Hotel Dunav, Sremski Karlovci, Srbija, Beograd : Privredna komora Srbije (2018)
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ОЦЕНКА ДОСТОВЕРНОСТИ ДАННЫХ ПО ЦИКЛИЧЕСКИМ УГЛЕВОДОРОДАМ - БИОМАРКЕРАМ, НАФТАЛИНАМ, ФЕНАНТРЕНАМ И АЛКИЛДИБЕНЗОТИОФЕНАМ, ПОЛУЧЕННЫХ ПРИ АНАЛИЗЕ МАСЕЛ МЕТОДОМ ХРОМАТОМАСС&СПЕКТРОМЕТРИИ.- НЕФТЕХИМИЯ Validation of data on polycyclic biomarkers, naphthalenes, phenanthrenes, and alkyldibenzothiophenes obtained by gas chromatographic-mass spectrometric analysis of hydrocarbon concentrates
Stojanović Ksenija, Kostić Aleksandar, Šajnović Aleksandra, Pevneva G.S., Golovko A.K., Jovančićević Branimir (2011)Stojanović Ksenija, Kostić Aleksandar, Šajnović Aleksandra, Pevneva G.S., Golovko A.K., Jovančićević Branimir. "ОЦЕНКА ДОСТОВЕРНОСТИ ДАННЫХ ПО ЦИКЛИЧЕСКИМ УГЛЕВОДОРОДАМ - БИОМАРКЕРАМ, НАФТАЛИНАМ, ФЕНАНТРЕНАМ И АЛКИЛДИБЕНЗОТИОФЕНАМ, ПОЛУЧЕННЫХ ПРИ АНАЛИЗЕ МАСЕЛ МЕТОДОМ ХРОМАТОМАСС&СПЕКТРОМЕТРИИ.- НЕФТЕХИМИЯ Validation of data on polycyclic biomarkers, naphthalenes, phenanthrenes, and alkyldibenzothiophenes obtained by gas chromatographic-mass spectrometric analysis of hydrocarbon concentrates" in Petroleum Chemistry (Neftekhimiya) Enginee no. 51, :Springer (2011): 243-251
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Availability as a dimension of energy security in the Republic of Serbia
Boban Pavlović, Dejan Ivezić (2016)There is a range of modern approaches and models in literature for the evaluation and determination of energy security, which are based on different parameters and indicators. For most of them, a common characteristic is emphasizing the avail ability of energy, as an important dimension for ensuring energy security. In this paper, concise overview of Serbian energy sectors is given and appropriate energy indicators are defined and determined. Selected indicators provide insight into the main components that characterize availability ...... natural gas, this indicator is very important because it shows the ability of the country to maintain strategic stocks of critical fuels – oil [12] and natural gas [13]. 2 Oil stockSOS (Oil) 0.086 (8,6%) Oil consumption = = (2) 2 Natural gas stockSOS (Natural gas) 0.2227 (22.3%) Natural gas consumption ...
... imports of oil and natural gas, especially if currently estimated remaining reserves (8.3 years for oil, 7 years for natural gas) and resources (29.6 years for oil and natural gas combined) are taken into consideration. The SOS is especially affected in the natural gas sector because of import dependency ...
... connected to import of natural gas. Establishing interconnections with the neighbours (Bulgaria, Croatia, Romania, etc.) should open possibilities for natural gas supply from some of planned international gas routes (South Corridor projects) and liquefied natural gas terminals. Nevertheless, the planning ...Boban Pavlović, Dejan Ivezić. "Availability as a dimension of energy security in the Republic of Serbia" in Thermal Science, National Library of Serbia (2016). https://doi.org/10.2298/TSCI160923303P
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Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)
Saša Ivanišević, Dejan Radivojević (2018)Exploration for oil and gas in mature areas, such as the Pannonian Basin, can benefit from reexamination of old data using more advanced modern workflows that focus on the temporal and spatial aspects of sediment deposition. Specifically, we apply a new environment of deposition model that interprets the Upper Miocene- Pliocene sediments as being deposited in a rapidly filling basin characterized by quick shelf edge progradation from the northwest toward the southeast. Reconstruction of this shelf edge trajectory reveals ...Saša Ivanišević, Dejan Radivojević. "Upper Miocene depositional environments of the Kikinda-Mokrin High (Serbia)" in Interpretation, AAPG SEG (2018). https://doi.org/10.1190/INT-2017-0084.1