Iskanje po katalogu digitalne knjižnice

Opis: The main problem this research addresses is the EU energy policy, which focuses on a critical analysis of strategic energy management in all process phases. Particular emphasis is placed on strategic control, which is a key phase of the management process. Strategic control includes evaluating the effectiveness of implementing planned measures and making decisions about necessary adjustments or changes. The purpose of the study is to assess how well EU energy management strategies are aligned with policy objectives, in particular, to ensure energy security, sustainability and economic competitiveness, and at the same time to identify areas where improvements are needed to address current challenges. Energy management in the European Union is a crucial aspect of its energy policy, which focuses on ensuring energy security, sustainability and efficiency. Since the middle of the 20th century, organisations' increasing energy intensity has emphasized the need for a comprehensive and flexible approach. Energy management involves controlling the entire life cycle of energy - from extraction, conversion and distribution to consumption and waste disposal - in a complex environment shaped by various external factors. These challenges become even more pronounced in regions that experience frequent environmental, economic or geopolitical changes. Designing a universal model for global energy management is difficult because of the different conditions, regulations, and energy needs worldwide. Adaptable and adaptive strategies are essential to respond to supply and demand fluctuations, integrate renewable energy sources, manage geopolitical risks and achieve sustainability goals. Therefore, energy management must evolve to respond to a dynamic global environment. The EU prioritizes energy security but lacks a unified approach, which creates challenges in defining and measuring energy security. The absence of standardized criteria makes it difficult to strategically evaluate policies and make decisions, which could have long-term consequences for both energy and national security. Initially, energy security was focused on stable supply for economic growth, but global changes – such as rising demand, geopolitical tensions and environmental concerns – have made it more complex. The recent years have underscored significant vulnerabilities in global energy security and the sustainability of energy systems, particularly in Europe. The dual crises of the COVID-19 pandemic and the conflict in Ukraine have highlighted the urgency of addressing these challenges, pushing the European Union to accelerate its efforts toward more sustainable and secure energy practices. In response, the EU has diversified energy sources and strengthened energy security to reduce its dependence on politically unstable suppliers. Given the complexity of the geopolitical situation, disrupted supply chains and the EU's clear official commitment to decarbonisation by 2050, the above should be viewed from different angles. EU energy policy (short-term and long-term) is conditioned by the action of many factors, which differ in type, intensity of action and effect (positive or negative) - but the need to analyse existing and define new methodologies for evaluating the effectiveness of EU energy policy is evident. The doctoral dissertation examines the above and suggests improvements.
Ključne besede: Energy management, sustainable management, energy security, aggregate index, composite indicator
Objavljeno v DKUM: 10.04.2025; Ogledov: 0; Prenosov: 24
Celotno besedilo (6,70 MB)

Opis: Environmental protection and sustainable development have become an inevitable trend in many areas, including the energy industry. The development of energy supply networks is strongly correlated with the economics of energy sources as well as ecological and socio-political issues. However, the energy supply network is often distant from the social perspective. This paper therefore combines examination of perceptions and awareness of general public (web-based questionnaire) and top energy experts (a Delphi survey) on the energy supply network and identifies their potential integration in energy supply decision making processes. The results showed that public should be better informed as well as integrated into designing energy supply network as the prosumers gain power and the energy suppliers will no longer dominate the market. Public actors are ready to shape sustainable energy supply and also willing to pay 5.8% more for a sustainable energy supply. The majority are prepared to invest in renewable energy supply network close to their place of residence. Another result is that the public is calling for a shift in priority towards more sustainable and socially friendlier energy supply rather than focusing mainly on the economic and technical perspectives.
Ključne besede: energy supply, supply networks, sustainable energy, public perception, social integration, supply chain management
Objavljeno v DKUM: 19.02.2024; Ogledov: 306; Prenosov: 30
Celotno besedilo (1,60 MB)
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Opis: 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.
Ključne besede: construction, project management, optimization tools, scheduling, sustainability, energy efficiency
Objavljeno v DKUM: 26.09.2023; Ogledov: 393; Prenosov: 633
Celotno besedilo (1,20 MB)
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Ključne besede: gospodarjenje z odpadki, zgorevanje, waste management, municipal solid waste, integrated waste management system, waste-to-energy, thermal treatment, waste-to-energy plant, computational fluid dynamics
Objavljeno v DKUM: 10.07.2015; Ogledov: 2227; Prenosov: 100
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Opis: The problem we referred to is great and mostly uncontrolled energy consumption in the public and private sector not just in Slovenia but also in other countries around the world. In Europe some restrictions were met, which resulted in 2009 in a new standard, the EN 16001:2009, two years later the International Standardization Body issued the ISO 50001:2011, energy management standard. With the help of a case study potential in energy and emissions as well as overall environmental protection was presented. All anticipated research methods were followed, hypothesises set in the introduction were carefully researched and mainly proven to be right whereas some, hypothesis one and two, connected with the increase of energy consumption in Slovenia and hypothesis two, number of certificates per capita, were refuted. The overall consumption of energy in Slovenia decreased (table 2, page 15) in the year 2011 compared to 2010. Slovenia is also not the country with the lowest number of issued energy certificates per capita; Portugal has two (picture 1, page 35). Hypothesises three to five linked to the study case were fully proven to be right; the company did not have an energy management programme but the owners were fully aware of the possibilities of energy savings. There was as well energy savings potential, proven to be even more that the first anticipated 50-percent. Our conclusion is that energy management plays a key role in sustainable development and environment conservation practices, as it helps the country move towards an energy efficient economy. With the help of the case study we made a good illustration how a micro company saved 75-percent of energy costs in the first year, by using energy management as a tool. The main and general changes enhanced the company’s energy efficiency, taught employees some basic techniques for achieving greater energy efficiency and cost reduction not just inside the organization but also in family homes. It is important, that expenditures concerning energy purchase and consumption are exactly defined. Before the implementation and certainly after it, energy management accounting and energy management audits should be performed. This serves as a tool to realize and understand the full spectrum of the environmental costs and helps to create internal demand in businesses for cleaner and less wasteful production processes. It gives organizations a preferential position to engage in pollution prevention activities mainly because it makes good business sense due to the immediate financial benefits it delivers. The prime goal of the thesis was to stimulate organizations to implement the concepts of energy management practices into their organizational structure and to use energy management systems for lowering energy and other environmental costs, no matter the size or segment the organization. There is no need to get certified if not wanted; just performing these activities is enough, as it brings all the benefits to the environment. Helping to achieve this goal is now mainly in the hands of others, it is important how the country will act and react and help organizations to achieve this goal. Different restrictions can be met on the field of law and taxes, subsidies, etc. We believe that, for meeting all the required goals (Kyoto protocol and other) and help the economy to move towards a sustainable one, organizations will have to reorganize their structures and implement energy management. There are big potentials in reduction of emissions and energy consumption, with energy management, organizations can get the help and knowledge how to keep the budget of energy consumption as low as possible, how to meet all the critical objectives and also important, reduce their operational costs on a long-term basis.
Ključne besede: energy management, energy efficiency, energy conservation, energy consumption, energy accounting and auditing, energy manager, International Standards Organization (ISO), energy management system EnMS, cost efficiency
Objavljeno v DKUM: 19.05.2014; Ogledov: 2189; Prenosov: 137
Celotno besedilo (1,68 MB)