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1.
6th International Conference En-Re Energy & Responsibility : Book of Extended Abstracts
2024

Abstract: In the context of escalating climate challenges, the EnRe conference is dedicated to exploring pathways to climate neutrality and the sustainable green transition. The conference is focused on the development and implementation of innovations supporting the transformation of energy systems, industrial systems, and living systems, all with the goal of creating a sustainable future with net-zero emissions. The conference brings together experts, researchers, policymakers, and business leaders to share their experiences, research, and visions. The aim of the conference is to foster collaboration and exchange of ideas, and to collectively develop comprehensive approaches and strategies for achieving climate neutrality. This conference is not just a knowledge exchange, but also a platform for encouraging concrete actions that will ensure a greenerand more sustainable future for our next generations to come.
Keywords: alternative energy systems, dynamic tariffing, electrical machines and drives, energy conversions, financing energy projects, nuclear energy, conventional energy systems, climate changes - climate pan, mathematical methods in engineering, micro and nano energy, low-carbon technologies and strategies, renewable energy technologies heating and cooling systems, smart buildings, cities and networks, policies and strategies for renewable energy sources, energy efficiency and the climate
Published in DKUM: 17.05.2024; Views: 71; Downloads: 16
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Assessment of supporting visual learning technologies in the immersive VET cyber-physical learning model
Matej Veber, Igor Pesek, Boris Aberšek, 2023, original scientific article

Abstract: Humanity faces diverse technological, societal, and sociological challenges. Digitalization is being integrated into every aspect of our lives. Technologies are developing rapidly and the ways in which we live and learn are changing. Young people are acquiring information and learning in a different way than in the recent past. Education systems are no longer keeping up with the development of technology. Education systems need to adapt and introduce technologies that motivate students and ultimately contribute to higher learning goals. To this end, we need to develop modern learning models that support education and technological development. In previous research, we developed and evaluated a state-of-the-art learning model, the CPLM. We built on this with a new study, in which we assessed the difference between the cognitive activities of attention and meditation in students during the viewing of a classical educational video, a 360° video, and an AR app on a screen. We found that the 360° video had the greatest impact on students' attention and is consequently suitable for initially motivating students in the proposed learning model. We made a proposal for a modern educational model and possibilities for further research.
Keywords: XR immersive technologies, VET education, 360° video, educational video, innovative learning method development, assessment
Published in DKUM: 18.03.2024; Views: 218; Downloads: 243
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6th International Conference on Technologies & Business Models for Circular Economy : conference proceedings
2024, proceedings

Abstract: The 6th International Conference on Technologies & Business Models for Circular Economy (TBMCE) was organized by the Faculty of Chemistry and Chemical Engineering of the University of Maribor in cooperation with Strategic Research and Innovation Partnership – Networks for the transition into circular economy (SRIP – Circular economy), managed by the Chamber of Commerce and Industry of the Štajerska. The conference was held in Portorož, Slovenia, at the Grand Hotel Bernardin from September 6th to September 8th, 2023. TBMCE 2023 was devoted to presentations of circular economy concepts, technologies and methodologies that contribute to the shift of business entities and society as a whole to a more responsible, circular management of resources. The conference program included a round table Standardization for circular economy – more secure and less complicated closing of material loops, 6 panel discussions, 1 plenary and 3 keynote lectures, oral and poster presentations. The event was under the patronage of Ministry of the Economy, Tourism and Sport and Ministry of Cohesion and Regional Development. The Netherlands joined us as a partner country.
Keywords: sircular economy, sustainable development, processes and technologies, circular business models, research and development
Published in DKUM: 26.02.2024; Views: 495; Downloads: 557
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5.
Evaluation of system for economically viable thermal power plant operation
Martin Bricl, Jurij Avsec, 2019, original scientific article

Abstract: Taking into consideration the impacts of global warming and strict European Union policy 2030 climate & energy framework, it is imminent for conventional thermal power plants to modernize their infrastructure for achieving economically viable operation on demanding electricity market. In the scope of the paper is presented author%s individual research work - economic evaluation of conventional thermal power plant operation with solar central receiver system and flue gas desulphurization installation. The goal of research work is to determine whether the designed model is profitable on current European electricity market or not. Based on analytical calculations and gathered numerical data for the designed model, a program code was generated in mathematical environment Matlab, that enables simulation of operation for the designed model in the annual time period. Positive and pessimistic scenarios were analyzed. Results are presented numerically and also graphically and show a positive contribution to the economically viable operation of conventional thermal power plants.
Keywords: thermal power plant, economically viable operation, a solar central receiver system, renewable technologies, flue gas desulphurization
Published in DKUM: 22.02.2024; Views: 213; Downloads: 9
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Energy analysis of hydrogen use in road transport of the Republic of Croatia
Franco Krog, Jurij Avsec, 2022, professional article

Abstract: In this paper, we will calculate the needs for hydrogen if all traffic in Croatia was driven by hydrogen. In the article, we will determine the required amount in several ways. First, we will briefly describe fuel cell cars and the extent to which the amount of exhaust gases would be reduced. We will then explain the ways of obtaining hydrogen, its transport and what the purchase costs would be. Finally, we will compare the results and draw some conclusions.
Keywords: hydrogen, hydrogen technologies, hydrogen acquisition, transport
Published in DKUM: 30.10.2023; Views: 346; Downloads: 7
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RFCS project methenergy+ methane recovery and harnessing for energy and chemical uses at coal mine sites
Matjaž Kamenik, Janez Rošer, Salvador Ordonez, 2022, original scientific article

Abstract: Ventilation Air Methane emissions (VAM) from coal mines lead to environmental concern because of their high global warming potential and the loss of methane (CH4) resources. How to tackle methane harnessing and its use was studied and analysed in the scope of the RCFS project, which was performed from 2017 till 2020, and coordinated by the University of Oviedo in Spain within the scope of an international consortium of eleven entities from Poland, Spain, the United Kingdom, Czechia, Greece, Slovenia and Sweden, combining universities, research institutions and industry (mostly Polish mines and the Slovenian Velenje mine). The main challenge tackled in the project was the use of methane released from both operating and abandoned mines, which is an environmental and safety hazard and also a useful source of energy. Therefore, the effective extraction of methane, its enrichment, purification, separation, thermal or chemical upgrading, and its use, considering coal mine site specifics, was assessed. Despite good operational results, after in-depth economic analysis of the integration, CAPEX and OPEX calculation, there turned out to be a high economic dependence on the cost of adsorbent, since adsorption was the most promising technology for concentrating the methane in these emissions. Therefore, the economic viability depends on the development of materials that meet a minimum cost and performance. Within the scope of the project, a lot of activities were carried out in order to widen and exploit the results.
Keywords: ventilation air methane, abandoned mine methane, coalmining, methane recovery, harnessing, thermal upgrading, chemical upgrading, adsorption-based technologies, materials development, thermal regenerative oxidizers, catalytic regenerative oxidizers, methanol, greenhouse gases
Published in DKUM: 30.10.2023; Views: 399; Downloads: 5
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The Global future trends of hydrogen production
Jurij Avsec, Urška Novosel, Dušan Strušnik, 2022, published scientific conference contribution abstract

Keywords: hydrogen, hydrogen technologies, hydrogen production, solar hydrogen production
Published in DKUM: 27.10.2023; Views: 230; Downloads: 3
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10.
Energy and applicative analysis of the useof hydrogen in road transport in the Republic of Croatia
Franco Krog, Jurij Avsec, 2022, published scientific conference contribution abstract

Keywords: hydrogen, hydrogen technologies, hydrogen production, transport
Published in DKUM: 27.10.2023; Views: 242; Downloads: 4
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