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Instal
2012 nr 12 37-40
PL Coraz szybciej rosnące ceny energii oraz zauważalne zmiany klimatu, za które obarczane są głównie konwencjonalne systemy konwersji energii, wymusza wprowadzanie rozwiązań eliminujących te niekorzystne cechy. Jedną z metod jest poprawa efektywności wykorzystywania energii, a w tym zakresie ważnym zag[...]
EN Rapidly grown of price energy and observable climate change are mainly blame by conventional energy conversion systems. That implies introduction of solutions to eliminate these adverse effects. One method is to improve the efficiency of energy use, including the important issue is energy storage, e[...]
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Elektro Info
2006 nr 4 74-75
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Napędy i Sterowanie
2006 R. 8, nr 12 115-125
PL Magazyny energii. Przykładowe zastosowania magazynów energii to: - akumulacja energii wytwarzanej przez alternatywne źródła energii elektrycznej (baterie słoneczne, elektrownie wiatrowe) niewspółpracujące z systemem elektroenergetycznym (układy autonomiczne); - w systemie elektroenergetycznym do pop[...]
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Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
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Prace Instytutu Lotnictwa
2011 Nr 8 (217) 110-120
PL W artykule przedstawiony został przykład ilustrujący możliwość wykorzystania prostych oszacowań, do oceny wybranych aspektów koncepcji samolotu bezzałogowego, zasilanego energią słoneczną i przeznaczonego do wykonywania lotów długotrwałych (powyżej 24h). Omówiono zagadnienie magazynowania energii el[...]
EN In this article the example is presented to illustrate the potential of simple estimates for assessing the realizability of selected aspects of the idea of unmanned, long endurance (exceeding 24h), solar powered aircraft. The problem of energy storing in an on-board supplying system is addressed and[...]
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Archives of Electrical Engineering
2015 Vol. 64, nr 2 189--196
EN The application of renewable energy sources poses the problems connected with output volatility. In order to decrease this effect the energy storage technologies can be applied, particularly fuel cells connected with hydrogen storage. In this paper the application of SOFC system for a household in P[...]
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Acta Energetica
2010 nr 1 71-79
PL Kondensatory elektrochemiczne, zwane także superkondensatorami lub ultrakondensatorami, magazynują energię w polu elektrycznym elektrochemicznej warstwy podwójnej. Zastosowanie elektrod o rozwiniętej powierzchni powoduje uzyskanie dużych wartości pojemności. Już od wielu lat dostępne są na rynku mat[...]
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Poznan University of Technology Academic Journals. Electrical Engineering
2010 No. 64 41--51
EN The paper presents the problems related to consideration of economic criteria in optimization processes of (electric) technological systems. The results of optimization calculation of the heavy-current busducts, electric lighting system of interiors is provided and commented. Moreover, a conception [...]
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Archives of Electrical Engineering
2017 Vol. 66, nr 2 265--277
EN The growth in renewable power generation and more strict local regulations regarding power quality indices will make it necessary to use energy storage systems with renewable power plants in the near future. The capacity of storage systems can be determined using different methods most of which can [...]
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Advances in Science and Technology Research Journal
2017 Vol. 11, no 1 166--172
EN Not only electrical hybrid technology is used for drivetrain of passenger cars. Also other systems using non-electrical principles (hydraulic or air pressure, mechanical energy storage) can be found in modern vehicles. There is a quantification of the spared energy by using a hybrid vehicle in the p[...]
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International Journal of Microelectronics and Computer Science
2010 Vol. 1, nr 2 195-200
EN Photovoltaic systems can operate successfully also in less favorable climatic conditions, however, their performance can be improved by better adjustment to the local conditions. The specific feature of climate in Central Europe is the frequent occurrence of short and deep changes of solar radiation[...]
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ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
EN The paper presents various ways to accumulate the energy converted from the solar radiation in the electrical form: electrochemical batteries, grid storage, elevated water tank, hydrogen production and supercapacitors which are suitable for use in agriculture or rural areas. Along with the basic pre[...]
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ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
EN The solar energy reaching our planet is much greater than our civilisation needs. The main obstacle on the way to its wider use is high variability. This fact determines the need to provide a way to store the energy for the time when the Sun is not shining over particular region or the radiation is [...]
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Transactions of the Institute of Fluid-Flow Machinery
2015 nr 128 19--27
EN The paper contains description of conception, realization a tests of an accumulative heat exchanger. The appliance has a sectional construction with four cassettes filled with ceresine – a mixture of paraffins. The exchanger is dedicated for ventilation and cooling applications, especially in passiv[...]
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Computer Applications in Electrical Engineering
2012 Vol. 10 228--243
EN The current paper focuses on functional properties of energy storages as well as looks at their application in electric power systems. Moreover, the work thoroughly analyzes and compares the parameters and functional properties of batteries and supercapacitors, as frequently used power storages. The[...]
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Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN
2018 nr 105 225--232
PL Kończące się zasoby paliw kopalnych, a także niestabilność produkcji energii ze źródeł odnawialnych powodują, że zrównoważone zarządzanie produkcją i zużyciem energii stanowi jedno z naczelnych wyzwań XXI wieku. Wiąże się ono również z zagrożeniami stanu środowiska przyrodniczego m. in. wskutek nega[...]
EN Finite fossil fuel resources, as well as the instability of renewable energy production, make the sustainable management of energy production and consumption some of the key challenges of the 21st century. It also involves threats to the state of the natural environment, among others due to the nega[...]
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Archives of Metallurgy
PL Energia zmagazynowana została zdefiniowana jako przyrost energii wewnętrznej badanego materiału, wywołany odkształceniem plastycznym i wyznaczony w stania odciążonym. Charakteryzuje ona stan odkształconego materiału. Ten stan a więc i energia zmagazynowana zależy od historii odkształcenia. Miarą prz[...]
EN The stored energy e due to plastic deformation is defined as the change in internal energy measured at stress free state of material, and it characterises the cold-worked state. Both coldworked state and the stored energy at each instant of deformation depend on the deformation history. Therefore, t[...]
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Journal of KONES
2019 Vol. 26, No. 4 257--264
EN 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 la[...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN The contribution describes the German situation of grid integration of wind energy. Due to a new edition of the renewable energy law some technical requirements must be fulfilled by the wind turbines. These demands and the possibilities and efforts of the technical realization are described based on[...]
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Electrical Power Quality and Utilisation. Magazine
EN In modern distribution grids, more distributed generation technologies emerge. The most far-going implementations are 'energy islands' with a high degree of autonomy from the central grid. This paper considers different technological barriers that emerge with increasing penetration of such systems: [...]
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