Energija, ekonomija, ekologija最新文献_第3页

Potencijal energije sunca i vetra za strateško planiranјe dekarbonizacije proizvodnјe električne energije u Srbiji

Energija, ekonomija, ekologija Pub Date : 2022-12-01 DOI: 10.46793/eee22-4.01d

Željko Đurišić, Bojana Škrbić

{"title":"Potencijal energije sunca i vetra za strateško planiranјe dekarbonizacije proizvodnјe električne energije u Srbiji","authors":"Željko Đurišić, Bojana Škrbić","doi":"10.46793/eee22-4.01d","DOIUrl":"https://doi.org/10.46793/eee22-4.01d","url":null,"abstract":"The current structure of electricity production in Serbia is not sustainable and it is necessary to consider the possibilities of decarbonisation of electricity production in the future. Renewable energy sources are the only sustainable resource for implementing the decarbonisation strategy. This paper presents the results of research of the potential of solar and wind energy in the territory of the Republic of Serbia. The spatial depressiveness of these sources is presented and the energy potential is estimated for each region. Based on the available global databases, the potential was considered and the possible installed capacity and gross annual electricity production for each region were defined. It was concluded that the technically usable potential of wind energy in the territory of the Republic of Serbia (excluding Kosovo and Metohija) is about 11,500 MW, from which about 29.5 TWh of electricity could be produced annually. The technically usable solar potential in Serbia is estimated at about 24 GWp, of which about half is on roof surfaces. The estimated production of electricity from solar capacities is about 30.5 TWh per year.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128606310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal Integration of Solar Assisted Heating Systems in Residential Buildings 住宅建筑中太阳能辅助供暖系统的优化集成

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee21-4.31s

Igor K. Shesho, R. Filkoski, Done J. Tashevski, Monika Uler-Zefikj

{"title":"Optimal Integration of Solar Assisted Heating Systems in Residential Buildings","authors":"Igor K. Shesho, R. Filkoski, Done J. Tashevski, Monika Uler-Zefikj","doi":"10.46793/eee21-4.31s","DOIUrl":"https://doi.org/10.46793/eee21-4.31s","url":null,"abstract":"The decrease in conventional energy resources, environmental pollution issues and climate change are the leading factors inducing the increase of energy efficiency criteria. Trends to improve energy efficiency are mainly aimed at the construction sector as one of the leading sectors in energy consumption. In the paper the performance of the decentralized solar assisted heating systems (SAHS) for climatic conditions in Macedonia was analysed in order to assess its possibility to be integrated as part of the district heating system. The analysis is based on a holistic approach, in which the performance of the SAHS is generally functionally dependent on four factors: (1) the characteristics of each component, (2) the system structure and mutual interactions of the components, (3) the management method and (4) specific energy consumption for heating of the building. The specific analysis is directed toward the assessment of the solar fraction of the SAHS as a function of the building energy performance and system heating temperature range. The numerical modelling of the processes occurring in systems was performed with the dynamic simulation software TRNSYS. Both dynamic models of the solar bivalent system and reference building were developed. The dynamic model contributes to the flexibility of conducting parametric analysis. The obtained results from the parametric analysis were condensed in a general table upon which the analysis of system performance was performed.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127362657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hibridno napajanje telekomunikacione i merne opreme daljinskih mernih stanica u sistemima zaštite od poplava

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee20-1-2.102d

Željko V. Despotović, Marko Tajdić, Jovan Kon

引用次数: 1

Puna cena električne energije proizvedene iz lignita u Srbiji

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee21-4.38b

Ilija Batas Bjelić, Dejan S. Molnar

{"title":"Puna cena električne energije proizvedene iz lignita u Srbiji","authors":"Ilija Batas Bjelić, Dejan S. Molnar","doi":"10.46793/eee21-4.38b","DOIUrl":"https://doi.org/10.46793/eee21-4.38b","url":null,"abstract":"The main goal of this research is to alocate costs by type to cost bearers. Two basic bearers of costs have been defined in the public electricity company in Serbia (hereinafter referred to as the company), although it is a homogeneous product: 1. electricity from lignite thermal power plants and 2. electricity from hydropower plants. In that sense, we have carried out a set of procedures through which the costs per unit of product were incurred (in this case, the unit of production is 1 MWh of electricity). First, on the basis of the costs that the company records in its income statements during 2017, 2018 and 2019, it is estimated how much expenditure the company has and bears, i.e. the state (since it is a public company) for the production of 1MWh. Then, the cost price was \"upgraded\" with those expenses that are \"not seen\" directly in the company's income statement, but are paid by society and the state in other ways. In this way, based on available data, we determined the cost of 1MWh of electricity produced from lignite for Serbian citizens today, and estimated how much it could cost in the near future, when access to electricity production based on unfair competition based on neglecting health costs and effects global warming.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129860937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pametna i socijalno odgovorna energetska tranzicija u regionima sa intenzivnom eksploatacijom uglja

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee21-3.73l

Jasmina Mandić Lukić, Đorđina Milovanović, Maja Stipić, Sanja Petrović Bećirović, Radoslav Raković, Brankica Popović Zdravković, Miodrag Životić

{"title":"Pametna i socijalno odgovorna energetska tranzicija u regionima sa intenzivnom eksploatacijom uglja","authors":"Jasmina Mandić Lukić, Đorđina Milovanović, Maja Stipić, Sanja Petrović Bećirović, Radoslav Raković, Brankica Popović Zdravković, Miodrag Životić","doi":"10.46793/eee21-3.73l","DOIUrl":"https://doi.org/10.46793/eee21-3.73l","url":null,"abstract":"Faced with forthcoming international obligations related to climate change mitigation measures, primarily planned to be reflected through the Law and Action Plan on Low Carbon Development Strategy, as well as the Law on Climate Change, all of which are currently being defined and adopted, Serbia is increasingly facing a need to switch its coal-fired facilities to alternative, environmentally more acceptable options. The related measures will have to be implemented much sooner than initially planned. Knowing that 80% of national GHG emissions originate from the energy sector, as well as that the dominant portion of those emissions results from the use of locally available coal, it is clear that the most efficient climate change mitigation measure would be a switch to alternative fuel options. However, having in mind that such an energy transition process is coupled with significant technological, environmental, economic, social, and other difficulties, the EU has initiated several projects, and one of them is TRACER, launched under the Horizon 2020 program, that strives to shed light on the best research and innovation strategies facilitating easier transition to the sustainable, low carbon energy system. The project addresses actions across nine coal-intensive European regions, including Kolubara Region in Serbia. The paper presents technological, environmental, and social challenges in the transition process, with an emphasis on the Kolubara region, and a proposal for the energy transition in Serbia respecting R&I strategies and Smart Specialization.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130514530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Primjena RC-modela u simulaciji dimamičkih procesa razmjene toplote građevinskih objekata sa okruženjem

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee20-1-2.065dm

Svetlana Dumonjić-Milovanović, Petar Gvero, Zdravko N. Milovanović

{"title":"Primjena RC-modela u simulaciji dimamičkih procesa razmjene toplote građevinskih objekata sa okruženjem","authors":"Svetlana Dumonjić-Milovanović, Petar Gvero, Zdravko N. Milovanović","doi":"10.46793/eee20-1-2.065dm","DOIUrl":"https://doi.org/10.46793/eee20-1-2.065dm","url":null,"abstract":"The applied methodology for the simulation of the dynamic heat exchange processes is based on the application of the RC-model (R-resistor, C-capacitor). According to that model the final number of parallel layers is formed through the cross- section of the construction element and to those layers the characteristics which are equivalent to the elements of the electric circuit are assigned. By establishing the heat balance equations for the nodes between adjacent layers, heat transfer matrices are determined for each time interval, and therefore the dynamics of heat exchange is defined as well. The complexity of the heat exchange process of the buildings with the environment is particularly pronounced in the cooling mode, when the influence of short-wave radiation is dominant within other influences. Due to the absorption of short-wave radiation, the processes of periodic accumulation and release of heat in the opaque building elements are expressed. The results of established model were compared on the results of three validation tests given in EN ISO 52017, and they showed good matches with the given hourly values of the operative temperature. After validation procedure, the effect of the thermal capacity influence on the dynamics of heat exchange of several different opaque building elements, the effect of the intensity of ventilation on the cooling needs as well as the influence of the external shade on the reduction of cooling needs were assayed.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125489792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Poboljšanje rada distributivne mreže u uslovima velikih opterećenja korišćenjem fotonaponskih i sistema za skladištenje energije

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee22-2.19k

Nikola Krstić, Dragan Tasić, Dardan Klimenta

引用次数: 0

Energetska politika kao faktor održivog razvoja

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee21-3.66r

G. Rikalović, Bojan Vracarevic, Dejan S. Molnar

{"title":"Energetska politika kao faktor održivog razvoja","authors":"G. Rikalović, Bojan Vracarevic, Dejan S. Molnar","doi":"10.46793/eee21-3.66r","DOIUrl":"https://doi.org/10.46793/eee21-3.66r","url":null,"abstract":"The energy market is characterized by significant imperfections. Negative external effects and other market imperfections have, among other things, a serious consequence - they send the wrong price signals and mask the real costs that arise in the process of energy production and consumption. As a result, there is a serious degradation of the environment at the local and global level. Negative effects at the global level, such as the depletion of non-renewable resources and changes in the global climate, represent the most serious challenges facing humanity today. Public sector responses to market imperfections, in the form of various measures and instruments, are well known in economic theory and have proved effective in practice in many circumstances. However, the fact that giving priority to economic and social goals in public policies can have and often results in deterioration of the quality of the environment is mainly ignored in the professional literature even today. In addition, the failure of energy regulations leads to environmental degradation. The situation is especially critical in many developing countries. In the race to achieve goals in the field of industry, agriculture or energy, there are major environmental problems that lead to environmental unsustainability as collateral damage. From an economic point of view, both the effectiveness and efficiency of energy policy are important, in terms of its potential to contribute to improvements in the field of environmental protection and energy efficiency. One of the best strategies is to introduce important aspects of the environment into the market sphere. In this way, the limitations of natural resources would be reflected in their prices. Abolishing the practice of large subsidies and underestimation of fossil fuel prices is certainly a step in the right direction.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114787692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Uticaj programirane promene faznog stava struje na specifičnu silu cilindričnih linearnih motora sa stalnim magnetima

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee21-1.07k

Žаrkо Kоprivicа, Drаgаn Мihić

引用次数: 0

Analiza ekonomske opravdanosti investiranja u solarnu elektranu sa vertikalno postavljenim bifacijalnim fotonaponskim modulima u perspektivnim uslovima slobodnog tržišta

Energija, ekonomija, ekologija Pub Date : 1900-01-01 DOI: 10.46793/eee21-1.22l

Đorđe Lazović, Kristina Džodić, Željko Đurišić

{"title":"Analiza ekonomske opravdanosti investiranja u solarnu elektranu sa vertikalno postavljenim bifacijalnim fotonaponskim modulima u perspektivnim uslovima slobodnog tržišta","authors":"Đorđe Lazović, Kristina Džodić, Željko Đurišić","doi":"10.46793/eee21-1.22l","DOIUrl":"https://doi.org/10.46793/eee21-1.22l","url":null,"abstract":"The future of European energy is moving towards a single European electricity market and an increasing share of renewables in the overall production mix. After the expiration of governmental incentive measures, power plants based on renewable energy sources will enter the liberalized market, where electricity prices will largely depend on the production of renewable energy sources. In order to achieve the maximum possible profit of the power plant under such conditions, it is necessary to consider the possibility of investing in solutions that are less represented today, but with the prospect of being more profitable in the future. Such a solution is a solar power plant consisting of vertically placed bifacial modules whose active surfaces are oriented in the east-west direction. This configuration of the power plant can achieve higher production in periods of high prices, and thus higher profits from the sale of electricity. On the other hand, such a solution is more expensive than a standard solar power plant with monofacial modules. In this paper, a comparison of return on investment in a bifacial power plant and a monofacial power plant with existing and prospective market conditions is performed. PVsyst software was used to analyze the solar potential and production profiles of photovoltaic power plants. The influence of solar power plant production on the price of electricity was investigated on the example of Germany. Based on this research, a prognostic model of the daily price diagram on the unified European market until 2040 was formed which served for the analysis of the profitability of investments in the two considered variants of the solar power plant realization.","PeriodicalId":236996,"journal":{"name":"Energija, ekonomija, ekologija","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127121181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0