Прегледај по Аутор "Kalabić, Dragana"

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    DETERMINATION VALUES OF FINANCIAL SUBSIDIES IN ACCORDANCE WITH THE EXERGY QUALITY FOR FUELS AND HEAT PRODUCED FROM BIOMASS
    (Faculty of Engineering Hunedoara, University Politehnica Timisoara, 2017) Vasković, Srđan; Gvero, Petar; Kalabić, Dragana; Medaković, Vlado; Husika, Azrudin
    The importance of bioenergy is particularly evident in recent years. The most important part in bioenergy supply chain is production of fuels. Due to cheaper energy production from fossil fuels, energy from biomass is less competitive than fossil energy. For this reason, there are subsidies for energy production from biomass. In the Republic of Srpska and Bosnia and Herzegovina there are defined only subvention for electricity produced from biomass, while the lower forms of energy are not subsidized. In accordance with the defined amount of subsidies for 1 kWh of the produced electricity we can define the value of subsidies for the produced heat energy and fuels from biomass. For that we should take into account exergy quality of these forms in comparison with electricity. This paper describes one such approach.
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    ENERGY INDEX FOR THE PRODUCTION OF WOODEN CHIPS
    (University Politehnica Timisoara, Faculty of Engineering Hunedoara, 2015) Vasković, Srđan; Gvero, Petar; Medaković, Vlado; Halilović, Velid; Ikić, Marko; Jokić, Srđan; Kalabić, Dragana
    Production of solid fuels from wooden biomass is defined with appropriate energy chain of supply. Procedure for production of solid fuels from wooden biomass, starting with technology for gathering wooden residues and residues from logging up by the system of fuels production (system for milling, crushing, chopping, drying and pressing of wooden residues), presents energy chain of supply with solid fuel from biomass. Efficiency of production wooden chips is the relation of overall invested energy per 1 kWh of lower heating value of produced fuel. This paper will analyze total invested energy in supply chain for production wooden chips as a function transport distance and wood moisture. Paper will mathematically describe chain of wooden chips production from forest transported to the sawmill and to the terminal of processing. Mathematical model for calculation energy index developed in Mathcad software.
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    ODREĐIVANJE VRIJEDNOSTI SUBVENCIJA U SKLADU SA EKSERGETSKIM KVALITETOM ZA GORIVA I TOPLOTU PROIZVEDENU OD BIOMASE
    (Mašinski fakultet, Univerzitet Istočno Sarajevo, 2016) Vasković, Srđan; Gvero, Petar; Medaković, Vlado; Husika, Azrudin; Kalabić, Dragana; Marković, Biljana; Antunović, Ranko
    Značaj proizvodnje energije iz biomase je posebno izražen u posljednje vrijeme. Najznačajniji dio u procesu proizvodnje energije iz biomase je lanac snabdijevanja i proizvodnja goriva od biomase. Zbog jeftinije proizvodnje energije iz fosilnih goriva, energija iz biomase je manje konkurentna od fosilne energije. Iz tog razloga se vrši subvencioniranje proizvodnje energije iz biomase. U Republici Srpskoj i Bosni i Hercegovini definisano je samo subvencioniranje električne energije proizvedene iz biomase, dok se niži oblici energije ne subvencioniraju. Da bi se definisala vrijednost subvencije za proizvedenu toplotu i goriva od biomase, treba se uzeti u obzir eksergetski kvalitet ovih formi. Ovaj rad opisuje jedan takav pristup.