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Improving decentralized economic growth and reducing energy consumption in the European Union with the application of ecologically oriented innovations
Niko Natek, Boštjan Krajnc, 2020, professional article

Abstract: This article presents applicable approaches for supporting the transition towards sustainable decentralized economic development within the European Union, based on the concept of supporting the development and market uptake of eco-innovations. The main topic addressed is achieving a more effective market uptake of ecologically oriented innovations facilitated through matchmaking, as well as knowledge and technology transfer between key actors of the innovation process.
Keywords: Energy efficiency, Ecology, Innovation, Economy, waste-water treatment, constructed wetlands, green-house gas emissions, EU
Published in DKUM: 15.11.2023; Views: 66; Downloads: 2
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Impacts of zero-emission powertrains based on hydrogen technologies in public transport
Niko Natek, Boštjan Krajnc, 2020, original scientific article

Abstract: This article reviews the development potentials and environmental impact of introducing category M3 vehicles (for passenger transport/buses) with fuel cell electric powertrains to an urban and inter-urban public transport service (PTS) to be operated in the Savinjsko-Šaleška region. The main focus is the demonstration of the PTS modelling and preliminary environmental impact assessment of the operation compared to conventional (modern) diesel-powered internal combustion engines.
Keywords: Hydrogen, Fuel Cell, Transport, Energy efficiency, Green-house gas emissions, Energy transition, Environment, Public transport service, Internal combustion Engine, CO2
Published in DKUM: 15.11.2023; Views: 63; Downloads: 2
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Green walls : an eco-friendly system for achieving energy efficiency in buildings
Dejan Tasić, Amor Chowdhury, Dalibor Igrec, 2022, published scientific conference contribution abstract

Keywords: energy efficiency, green wall, heat losses, modelling
Published in DKUM: 27.10.2023; Views: 64; Downloads: 3
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A review of energy-efficient and sustainable construction scheduling supported with optimization tools
Borna Dasović, Uroš Klanšek, 2022, review article

Abstract: This article reviews the accomplishments of studies in which optimization tools were used to develop energy-efficient and sustainable construction schedules. With the increase in global awareness of environmental issues, the construction industry has been forced to explore innovative techniques to make the building process more energy-efficient and sustainable. Project managers can use optimization tools in their scheduling procedures to address these issues in the early stages of the project. Therefore, this paper examines different optimization-based construction scheduling methods and their impact on schedule energy efficiency and the three key sustainability goals: economic viability, social equity, and environmental protection. Such a review has not yet been conducted to the best of our knowledge. This research aims to fill the gap and contribute to understanding advanced optimization tools that can pave the way to energy-efficient and sustainable scheduling practices. After a brief introduction, the background of optimization-based construction scheduling techniques that aim to improve construction management and incorporate these aspects into the decision-making process is explained. Then, these approaches are addressed in detail. It is determined for each study whether it adopted energy efficiency goals and which sustainability dimensions it considered within the proposed optimization model. The results of this study indicate a wide heuristic algorithms application for complex scheduling problems. Meanwhile, mathematical programming is still quite unexplored, especially methods that utilize algebraic modeling languages. This study provides a foundation for further research by addressing the current reach in development and possible knowledge gaps that could be researched in future studies. The paper also discusses the advantages and limitations of different approaches and illustrates the potential for utilizing these methods. Supported by the main review findings, conclusions and recommendations for further research are provided.
Keywords: construction, project management, optimization tools, scheduling, sustainability, energy efficiency
Published in DKUM: 26.09.2023; Views: 104; Downloads: 9
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The influence of organizational factors on the adoption of energy efficiency measures in companies
Aleksandar Vučković, Marija Džunić, 2023, original scientific article

Abstract: This paper aims to research the organizational factors influencing the implementation of energy efficiency measures in companies. The analysis was performed on a sample of companies from Serbia included in the World Bank Enterprise Survey. The raw data collected by the World Bank were utilized to analyze the correlation between various organizational factors and the adoption of energy efficiency measures. The analysis revealed a statistically significant correlation between management maturity and the implementation of energy efficiency measures in companies. These findings suggest that improving energy efficiency is not an isolated process but rather closely related to the maturity of management practices, highlighting the importance of comprehensive organizational development for achieving optimal energy management.
Keywords: energy efficiency, energy management, management maturity, organizational factors, Serbia
Published in DKUM: 05.09.2023; Views: 87; Downloads: 3
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Recovery of N-butanol from a complex five-component reactive azeotropic mixture
Miloš Bogataj, Zdravko Kravanja, Andreja Nemet, 2022, original scientific article

Abstract: This paper proposes a concept of a process design for the separation and recovery of n-butanol from a five-component mixture, consisting of n-butanol, isobutanol, formaldehyde, water and methanol. The mixture is a common waste stream in the production of butylated amino resins; therefore, recovery of n-butanol is crucial to the efficiency of the process. The results show that up to 94% of the n-butanol present in the waste stream can be recovered. Under the studied conditions, 99.76% pure n-butanol can be obtained, while formaldehyde, water and methanol are present only in traces. The energy intensity of the process is estimated at 2.42 MJ/kg of purified n-butanol. The economic analysis of the process shows that the process is economically viable over a wide range of production capacities, as evidenced by high net present values and high return on investment values.
Keywords: recycling, n-butanol, azeotropic mixture, separation, process design, energy efficiency
Published in DKUM: 17.08.2023; Views: 100; Downloads: 10
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Analytical modelling of achieving energy efficiency with green walls
Dejan Tasić, 2019, master's thesis

Abstract: In the last years, energy efficiency has become an important issue for the EU and Slovenia, who both strive for more sustainable use of energy in buildings. As an innovative approach to such matter, green walls are vertical structures that can serve both as a façade or an insulation layer as well as an aesthetic design for building application. This thesis contains calculated annual heat (transmission) losses through different wall assemblies with and without a constructed green wall in front of them. The goal is to compare values of heat losses between those wall assemblies and the explanation of such results which will determine if green walls present a viable energy-efficient structure for buildings.
Keywords: energy efficiency, green wall, heat losses, modelling
Published in DKUM: 18.11.2019; Views: 1719; Downloads: 138
.pdf Full text (3,83 MB)

Innovative solution for energy efficient urban freight deliveries
Tomislav Letnik, Matej Mencinger, Stanislav Božičnik, 2017, published scientific conference contribution

Keywords: transport, urban freight, CO2 emissions, energy efficiency, fuzzy clustering
Published in DKUM: 27.09.2017; Views: 1183; Downloads: 127
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Sustainable refurbishment of Martin Konšak Primary School in Maribor
Hristijan Babuka, 2016, master's thesis

Abstract: The thesis tends to present a comprehensive approach for sustainable refurbishment of primary schools, treating Martin Konšak Primary School in Maribor as a case study. The first part provides theoretical framework in which understanding of the sustainable refurbishment of schools is formed. Moreover, energy-efficient and sustainable principles of design are introduced. The following part deals with detailed analysis of the existing school. The investigation extends from site analysis - climate conditions, orientation, and urban context - to school building analysis, which includes an overview of the history and the current situation of the school, architectural evaluation, and energy analysis, resulting in summarizing the advantages and disadvantages of the existing building. The final part synthesizes the knowledge and proposes a final design solution for sustainable refurbishment of the school. The refurbishment concept involves renovation or demolition of particular elements and extension of the building's volume. Furthermore, it covers energy-efficient design principles and passive and active strategies to reduce energy consumption of the building and improve its environmental performance. The thesis concludes with simulations of building's energy use before and after the refurbishment.
Keywords: sustainable refurbishment, sustainable school, school refurbishment, architecture, energy efficiency, thermal envelope, energy performance.
Published in DKUM: 23.09.2016; Views: 2010; Downloads: 227
.pdf Full text (136,70 MB)

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