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Wyświetlanie 1-10 z 8955
Tytuł:
Storage of wind power energy
Autorzy:
Tywoniuk, Andrzej
Skorupka, Zbigniew
Tematy:
energy storage
wind energy
renewable energy
energy storage method
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Wydawca:
Instytut Techniczny Wojsk Lotniczych
Powiązania:
https://bibliotekanauki.pl/articles/242948.pdf  Link otwiera się w nowym oknie
Opis:
There has been a big increase in production and investments in wind turbines and wind farms in last 20 years. New generation of wind turbines is more reliable than from 1980’s are, which necessary condition is energy production is to play an important role among renewable energy sources. Over the last 30 years, the size of wind turbines increased 7 times, as nominal power increased nearly 14 times. At present, turbines capable of producing over 10 MW of power are being developed. The main reason for continued growth of turbines sizes is to minimize the energy cost per kilowatt-hour. However, it is worth remembering that according to the „square-cube law”, there is a maximum size after the surpassing of witch the cost of ever-larger turbines would grow faster than financial gain from the increased size. In this article, authors present energy storage methods and devices for wind power plants and cost-effectiveness of the individual energy storage methods. Authors also present data about energy storage efficiency and groups of energy storage devices for wind power plants such as: compressed-air power stations + gas turbine (CAES), utilizing underground wells, pumped storage power plants, rechargeable batteries (lithium-ion, lead-acid, sodium sulphur, VRB, zinc-flow, zinc-air, zinc-air), flywheels, hydrogen production and storage systems, superconducting magnetic energy storage (SMES), electrostatic storage – electrolytic capacitors.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ukrainian perspectives of using world experience in investing in energy innovations
Autorzy:
Lazarenko, Dmitry
Krutogorskyi, Iaroslav
Tematy:
alternative energy
renewable sources
energy generation
energy efficiency
energy policy
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Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Powiązania:
https://bibliotekanauki.pl/articles/692537.pdf  Link otwiera się w nowym oknie
Opis:
The article presents the world economic trends of alternative energy. An analysis of international programs and innovative projects that are implemented and used in the energy sector is introduced. Conceptual proposals and innovative research in the field of alternative energy are represented. The author also suggests ways of formation of effective energy management and rational energy policy.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy Security as a Priority for CEE countries. Is the King Naked?
Autorzy:
Szwedziak-Bork, Ilona
Tematy:
energy policy
energy security
Energy Union
European Energy Security Strategy
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Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Powiązania:
https://bibliotekanauki.pl/articles/529947.pdf  Link otwiera się w nowym oknie
Opis:
The aim of this article is to assess the implementation process of the EU energy security policy in Central and Eastern European (CEE) countries. In the EU, energy security remains a crucial issue for European Energy Strategy, the fundamental goals of which include the security of supply, sustainability and competitiveness. Security of supply should be considered the most important aspect in this context, because it is connected to deep interdependencies between markets and economies, often based on political or even geo-political considerations. This is currently particularly noticeable, among other things, in the relations between the EU and Russia, where – in the event of any potential energy supply disturbances – some CEE countries are considered to be the most exposed. By analysing matters referred to the security of energy supplies, the article aims to determine the scope of activities undertaken by selected CEE countries which are also EU Member States in order to achieve this goal. The paper stresses the significance of cooperation by CEE countries at regional level, and focuses on initiatives and projects meant to ensure the security of their energy supplies. The conclusions of the paper assess some of the success stories as well as failures experienced by CEE countries in the process of building their energy independence.
Le but de cet article est d'évaluer la mise en oeuvre de la politique de sécurité énergétique de l’Union européenne dans les pays de l’Europe centrale et orientale (PECO). Dans l'UE, la sécurité énergétique est un enjeu crucial pour la Stratégie énergétique européenne qui contient parmi ces objectifs fondamentaux la sécurité de l'approvisionnement, la durabilité et la compétitivité. La sécurité de l’approvisionnement doit être considérée comme l'aspect le plus important dans ce contexte, car elle est liée aux interdépendances profondes entre les marchés et les économies, souvent basées sur des considérations politiques ou même géo-politiques. Ceci est actuellement particulièrement visible, entre autres, dans les relations entre l'UE et la Russie, où - dans le cas de perturbations concernant l'approvisionnement en énergie - certains PECO sont considérés comme le plus exposés. En analysant les questions concernant la sécurité de l’approvisionnement énergétique, l'article vise à déterminer l’étendue des activités entreprises par certains PECO [qui sont aussi les États Membres de l’Union européenne] afin d’atteindre cet objectif. L’article souligne l'importance de la coopération des PECO au niveau régional et se focalise sur les initiatives et les projets visés à assurer la sécurité de l’approvisionnement énergétique de ces pays. Les conclusions de cet article évaluent des réussites, ainsi que les échecs des PECO, dans le processus de la construction de leur indépendance énergétique.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy policy of Liechtenstein
Autorzy:
Kucharska, Anna
Tematy:
energy policy
energy transition
Liechtenstein
energy security
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Wydawca:
Instytut Polityki Energetycznej im. Ignacego Łukasiewicza
Powiązania:
https://bibliotekanauki.pl/articles/101754.pdf  Link otwiera się w nowym oknie
Opis:
Liechtenstein is the fourth smallest country in Europe, which determines the low economic importance of this country on the international arena. Therefore, Liechtenstein is usually overlooked in the analysis of economic policies in various countries, including the energy sector. However, the analysis of such a small country brings a valuable complement to researches on potential and challenges with regard to the implementation of energy transformation policy especially taking into account the countries with poor capabilities. It should be emphasised that due to difficult geographical conditions and strong external influences, deepened analysis of the process of formulating energy policy in Liechtenstein should arouse the interest of those countries that suffer geographical disadvantages to strengthen their energy security.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of energy demand in a territorial government unit - methodological problems
Szacowanie zapotrzebowania na energię jednostki terytorialnej - problemy metodyczne
Autorzy:
Kowalczyk-Juśko, A.
Kościk, B.
Tematy:
energy balance
energy demand
energy consumption
methodology
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Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Powiązania:
https://bibliotekanauki.pl/articles/2051742.pdf  Link otwiera się w nowym oknie
Opis:
Subject and purpose of work: The aim of the study is to identify methodological problems, which may be encountered during the preparation of the energy balance of a territorial unit, along with indications of ways to solve them. Materials and methods: Problems were identified during the preparation of the energy balance for two selected rural communes and then they were investigated with reference to the literature on this subject. Results: Estimating the energy demand of a local government unit requires proper identification of the groups of energy consumers, divided into facilities owned or co-owned by communes and ones independent from commune authorities. The latter group is divided further, into households, businesses, farms. For each of the users different methods of obtaining data may be needed: a survey and analysis of statistical data, analysis of financial documents, evaluation of the buildings’ age. Generally, however, preparing an energy balance statement requires many simultaneous approaches, and the combination of multi-criterion analysis provides the most reliable picture of the problem. Conclusions: The scope of the data needed to compile an energy balance statement for local government units, depends on the purpose of the developed analysis. Methodological handbooks and training materials on this subject are helpful, but the developed methodologies may need to be modified and adapted to specific conditions.
Przedmiot i cel pracy: Celem pracy jest wskazanie problemów metodycznych, na jakie napotkać można podczas sporządzania bilansu energetycznego jednostki terytorialnej, wraz ze wskazaniami sposobów ich rozwiązania. Materiały i metody: Problemy zidentyfikowano podczas sporządzania bilansu energetycznego dwu wybranych gmin wiejskich, a następnie skonfrontowano z literaturą przedmiotu. Wyniki: Oszacowanie zapotrzebowania na energię w jednostce samorządu terytorialnego wymaga właściwego określenia grup odbiorców energii w podziale na obiekty będące własnością lub współwłasnością gminy oraz niezależne od władz gminy. Druga grupa dzieli się dalej, na gospodarstwa domowe, przedsiębiorstwa, gospodarstwa rolne. Dla każdej z grup odbiorców mogą być potrzebne odmienne metody pozyskania danych: badanie ankietowe, analiza danych statystycznych, analiza dokumentów finansowych, ocena wieku budynków. Najczęściej jednak sporządzenie bilansu energetycznego wymaga stosowania wielu podejść równocześnie, a połączenie wyników analizy wielokryterialnej daje najbardziej rzetelny obraz badanego problemu. Wnioski: Zakres danych, potrzebnych do sporządzenia bilansu energetycznego jednostki samorządu terytorialnego, zależy od celu opracowania analizy. Poradniki metodyczne i materiały szkoleniowe na ten temat są pomocne, jednak opracowane metodyki mogą wymagać modyfikacji i dostosowania do konkretnych warunków.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic models to evaluate energy costs: Are externalities and energy accounting the answer?
Autorzy:
Duckers, Les
Rodgers, Tom
Tematy:
Embodied energy
energy accounting
externalities
renewable energy
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Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Powiązania:
https://bibliotekanauki.pl/articles/14113369.pdf  Link otwiera się w nowym oknie
Opis:
Aim: In the context of climate change this paper explores the value of models for evaluating energy costs by considering energy accounting and externalities instead of capitalistic economics.   Research methods: We test the hypothesis that the conventional economic model of the energy market can lead to inappropriate choices, and that those choices may be environmentally damaging. We examine energy accounting (energy return on energy investment), embodied energy and the incorporation of external costs as more valuable economic models.   Findings: This paper reviews existing economic tools and examines modifications, which, when applied to energy provision or efficiency and conservation of energy applications, may give more accurate information about investment, return and environmental damage. Energy accounting of schemes should be a preliminary requirement for all proposed energy schemes. Externalities are less readily applied, but as the costs associated with renewable energy are becoming competitive in conventional economic terms, they are less valuable than energy accounting.   Value of the paper: The paper concludes that a preliminary assessment of a proposed energy scheme should be undertaken using energy accounting and external costs to determine the true energy value. These models could be used to select the best environmental option. Indeed “energy uneconomic” schemes, which cost more energy than they deliver, should be abandoned in order to avoid unnecessary environmental damage. After this process, legislation and fiscal measures such as taxes and incentives could be applied to satisfy social and political imperatives. Examples of energy accounting in insulation and consideration of external costs in a proposed strategy to replace fossil-fuelled electrical generation in Indonesia are included in the paper.   Limitations: We have not considered the serious question of finite fossil fuel resources and feel that this would be a profitable line of research.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Energy Union Tour – success or failure?
Autorzy:
Pach-Gurgul, Agnieszka
Tematy:
Energy Union Tour
Energy Union
energy security
energy policy
internal energy market
Pokaż więcej
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Powiązania:
https://bibliotekanauki.pl/articles/616482.pdf  Link otwiera się w nowym oknie
Opis:
The objective of the Energy Union is to integrate 28 national energy markets, guarantee free movement of energy through the borders of the member states, implement new technologies, increase energy efficiency and renew transmission infrastructure. This project is advocated in response to the energy crisis of 2009, between Russia and Ukraine, as a result of which the gas transit to some of the EU countries was discontinued. This project, however, does not enjoy equal interest among all EU member states. This is the outcome of the national interests of some member states, which, for many years, have had good political and economic relations with the Russian Federation, particularly in the area of energy raw materials. Therefore, Maroš Šefčovič – the European Commissioner in charge of the Energy Union, organised an Energy Union Tour, i.e. a series of meetings in all the member states, taking place at the turn of 2015–2016, the objective of which was to show what the Energy Union could offer each of them. The structure of the paper was determined by the research procedure and the response to all the research questions, comprising: introduction, reflections on the security of the energy raw material supply and the projects of Energy Union and Energy Union Tour as well as the conclusions from the research and the summary.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of “Green Energy” in Coal-Based Energy Culture – Implications for Poland’s Energy Security
Autorzy:
Pronińska, Kamila
Tematy:
energy security
energy culture
energy policy
renewable energy
sources
fossil fuels
Pokaż więcej
Wydawca:
Uniwersytet Warszawski. Ośrodek Analiz Politologicznych
Powiązania:
https://bibliotekanauki.pl/articles/523099.pdf  Link otwiera się w nowym oknie
Opis:
This paper surveys key features of Poland’s energy culture and energy security situation and how they influence country’s attitudes towards environmental dimension of energy policy. It looks in this context at the obstacles and prospects for development of renewable energy in Poland. It deals, on the one hand, with the mechanisms and reasons behind disregarding in a public discourse potential role of RES in securing future energy needs of Polish society, on the other hand, with a potential contribution of green energy to Poland’s energy security.
Artykuł ma na celu prezentację cech charakteryzujących polską kulturę energetyczną oraz kluczowych problemów bezpieczeństwa energetycznego Polski jako czynników wpływających na podejście kraju do ekologicznego wymiaru polityki energetycznej. W tym kontekście analizowane są bariery i szanse rozwoju produkcji energii ze źródeł odnawialnych w Polsce. Artykuł z jednej strony podejmuje temat mechanizmów i przyczyn niedoceniania w publicznym dyskursie potencjalnej roli OZE w zabezpieczeniu przyszłych potrzeb energetycznych społeczeństwa, z drugiej strony analizuje możliwe korelacje między wykorzystaniem OZE a bezpieczeństwem energetycznym Polski.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Primary energy consumption patterns in selected European countries from 1990 to 2021 : a cluster analysis approach
Autorzy:
Kosowski, Piotr
Janiga, Damian
Kosowska, Katarzyna
Opis:
This study delves into the structure of primary energy consumption in European countries, utilizing data from the Eurostat database, and focuses on the years 1990 and 2021. Through cluster analysis, countries were categorized based on their consumption patterns, revealing significant insights into energy security. The findings indicate a discernible shift away from solid fossil fuels, with renewable energy sources witnessing the most substantial growth. Natural gas, serving as a transitional fuel, has seen a rise in consumption, while nuclear energy’s development remained relatively stagnant. Oil, despite its declining share, remains a crucial component in the European energy mix. The study also highlights the challenges and implications of over-reliance on a single energy source, emphasizing the need for a diversified energy strategy. The analysis underscores the importance of diversifying primary energy sources to ensure energy security. While renewable sources are environmentally favorable, their inherent instability necessitates backup from other energy sources. Solid fossil fuels, despite their availability, face challenges due to environmental concerns. Natural gas, while flexible, requires extensive infrastructure and is highly politicized. Nuclear energy, despite its potential as an ideal complement to renewables, faces barriers in terms of investment and public perception. Oil, though convenient, is a fossil source with associated CO2 emissions and largely needs to be imported. In conclusion, the study advocates for a well-diversified set of energy sources tailored to individual country-specific situations, emphasizing the importance of strategic planning in energy consumption to ensure long-term energy security.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 8955

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