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Wyświetlanie 1-25 z 2046
Tytuł:
Energy storage systems: power grid and energy market use cases
Autorzy:
Komarnicki, P.
Powiązania:
https://bibliotekanauki.pl/articles/141507.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
storage technologies
storage system sizing
storage system operation
storage system management
storage system use case scenarios
storage system integration
Opis:
Current power grid and market development, characterized by large growth of distributed energy sources in recent years, especially in Europa, are according energy storage systems an increasingly larger field of implementation. Existing storage technologies, e.g. pumped-storage power plants, have to be upgraded and extended by new but not yet commercially viable technologies (e.g. batteries or adiabatic compressed air energy storage) that meet expected demands. Optimal sizing of storage systems and technically and economically optimal operating strategies are the major challenges to the integration of such systems in the future smart grid. This paper surveys firstly the literature on the latest niche applications. Then, potential new use case and operating scenarios for energy storage systems in smart grids, which have been field tested, are presented and discussed and subsequently assessed technically and economically.
Źródło:
Archives of Electrical Engineering; 2016, 65, 3; 495-511
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Storage of wind power energy
Autorzy:
Tywoniuk, Andrzej
Skorupka, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/242948.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
energy storage
wind energy
renewable energy
energy storage method
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.
Źródło:
Journal of KONES; 2019, 26, 4; 257-264
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Client-side Storage : Offline Availability of Data
Autorzy:
Janik, A.
Kiebzak, S.
Powiązania:
https://bibliotekanauki.pl/articles/384740.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
HTML5
offline storage
WebSQL
Web Storage
IndexedDB
File API
client-side storage
Opis:
Since paradigm shift from thick clients to thin ones and through growing requisition of remote services we have been facing continuous evolution of web applications. Standards and approaches of building HTML clients have been changing and now one of the biggest challenges for web application developers is issue related to clientside data storage. This paper applies to new technologies specified recently by World Wide Web Consortium. These specifications refer to new methods of storing data in web clients, which can be accessed via JavaScript in modern web browsers. In addition, the paper introduces a design and a reference implementation of a framework for Java language and Java Server Pages technology that simplifies implementation of web based applications with client-side storage. The framework is designed for integrating Java language with above mentioned new W3C specifications to create more powerful, modern, thin client web applications easily, without a need of knowledge of implementation details of JavaScript API for new technologies but using only Java language. The framework can be used to build thin clients, including mobile web-based clients that may replace not –portable, native mobile applications.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2014, 8, 4; 3-10
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy storage using compressed air
Autorzy:
Kaczmarczyk, Krzysztof
Dobrzaniecki, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/27324389.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
energy storage
pneumatic storage
Compressed Air Energy Storage (CAES)
Renewable Energy Sources (RES)
energia
magazynowanie
zmiany klimatyczne
Opis:
The climate change is probably the greatest challenge humanity is facing today. In order to protect future generations from the catastrophic effects of the process, actions to achieve climate neutrality are being taken worldwide. These actions include development of renewable energy sources. Renewable energy depends on weather conditions, which results in a mismatch between supply and demand for energy. Use of energy storage is the technical solution to minimize this issue. The paper presents topics related to the potential storing of surplus electricity produced from renewable energy sources (RES) in the form of compressed air. The article also shows worldwide solutions for energy storage using compressed air. As part of the work, three variants of a warehouse consisting of standardly available pneumatic units were considered. The conducted analyzes made it possible to determine the energy efficiency of such a system. It can be observed that greater efficiency is achieved by using large flow compressors and the operation of the pneumatic motor at a higher supply pressure. In addition, it can also be said that the greatest losses are associated with the operation of the compressor, which generates large amounts of heat during operation. Increasing the efficiency of the energy storage system can be achieved by utilizing the heat generated in the compression process.
Źródło:
Mining Machines; 2023, 41, 1; 25--36
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy storage
Autorzy:
Duckers, Les
Powiązania:
https://bibliotekanauki.pl/articles/13925599.pdf
Data publikacji:
2022-09-23
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
Renewable energy
Energy Storage
Climate Change
Opis:
Aim: The aim of this paper is to explore Energy Storage requirements and options to suit the needs of systems and transport fed from renewables. The variability of wind and solar sources in particular and the demand for transport energy are seen as key issues. Design / Research methods: The paper outlines the need for energy storage and compares the energy density and power density of a selection of storage options. Conclusions / findings: The results illustrate the difficulties of finding storage mechanisms to rival fossil fuels in both energy density and power density. Moreover finding the natural resources to provide sufficient storage will be a serious challenge even though the economic costs of storage systems are falling.. Originality / value of the article: The article demonstrates the importance of energy storage to the successful development of renewable energy systems, and of the economic and physical characteristics that such energy storage schemes should have. Implications of the research: Energy storage as a topic should be given a high priority for research and development. Limitations of the research: This article is not comprehensive and a review of best practice internationally would be a valuable extension to this work. JEL: Q42
Źródło:
Central European Review of Economics and Management; 2022, 6, 3; 33-45
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat and Cold Energy Storage Technologies as a Practical Complement to Renewable Energy Installations
Autorzy:
Mania, T.
Kawa, J.
Powiązania:
https://bibliotekanauki.pl/articles/1191856.pdf
Data publikacji:
2018
Wydawca:
Gdańska Szkoła Wyższa
Tematy:
energy storage
types of heat storage
heat storage loading and unloading
energy efficiency
heat pumps
Opis:
Thermal energy storage can be defined as temporary storage of heat energy at low or high temperatures. The development and innovative solutions of the thermal energy storage technology can, in the long-term, mitigate the negative impact on the environment and facilitate more energy-efficient exploitation of thermal energy systems. The main goal in thermal energy storage systems is to store the solar heat accumulated during the summer for heating in winter. The concept of such use of solar energy is not new, because it has already been developed and improved over the centuries, where it has played an important role in energy saving and significantly contributed to the improvement of energy efficiency and reduction of gas emissions to the atmosphere. The article presents the types of heat storages with particular emphasis on BTESstorage systems with examples of their applications.
Źródło:
Eco-Energetics: technologies, environment, law and economy; 2018, 1; 41--50
2657-5922
2657-7674
Pojawia się w:
Eco-Energetics: technologies, environment, law and economy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermal energy storage in buildings: Opportunities and challenges
Autorzy:
Deka, Priyam
Szlęk, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2204063.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermal energy storage
renewable energy
phage change material
latent heat thermal energy storage
sensible heat thermal energy storage
Opis:
The energy sector is a majorarea that is responsible for the country development. Almost 40% of the total energy requirement of an EU country is consumed by the building sector and 60% of which is only used for heating and cooling requirements. This is a prime concern as fossil fuel stocks are depleting and global warming is rising. This is where thermal energy storage can play a major role and reduce the dependence on the use of fossil fuels for energy requirements (heating and cooling) of the building sector. Thermal energy storage refers to the technology which is related to the transfer and storage of heat energy predominantly from solar radiation, alternatively to the transfer and storage of cold from the environment to maintain a comfortable temperature for the inhabitants in the buildings by providing cold in the summer and heat in the winter. This work is an extensive study on the use of thermal energy storage in buildings. It discusses different methods of implementing thermal energy storage into buildings, specifically the use of phase change materials, and also highlights the challenges and opportunities related to implementing this technology. Moreover, this work explains the principles of different types and methods involved in thermal energy storage.
Źródło:
Archives of Thermodynamics; 2022, 43, 4; 21--61
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration of Heat Storage Technologies in District Heating Systems
Autorzy:
Konyk, Alina
Demchenko, Vladimir
Powiązania:
https://bibliotekanauki.pl/articles/2069933.pdf
Data publikacji:
2021
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
thermal energy storage
district heating system
mobile thermal energy storage
Opis:
Global trends in the efficiency, safety of energy systems and energy conservation actualize the task of developing new technologies for energy storage and transportation. The article considers current technologies of storage and accumulation of thermal energy, which can be used in central heating systems, and draws conclusions about the feasibility of their use. Also, the classification of energy storage systems is presented. The most perspective thermal energy storage, which can be used to equalize the load on the energy source to ensure the peak demand for heat with a high coefficient of utilization of the equipment capacity, is noted.
Źródło:
Rocznik Ochrona Środowiska; 2021, 23; 493--502
1506-218X
Pojawia się w:
Rocznik Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Near-term storage potential for geological carbon sequestration and storage in Poland
Potencjalne możliwości geologicznej sekwestracji i składowania dwutlenku węgla w Polsce
Autorzy:
Stopa, J.
Zawisza, L.
Wojnarowski, P.
Rychlicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/216998.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
sekwestracja
pojemność magazynowa
magazynowanie podziemne
magazynowanie gazu
carbon sequestration
storage potential
underground storage
gas storage
Opis:
Of the various types of geologic formations, depleting oil and gas reservoirs has the highest near-termpotential for CO2 storing. This is due to verified trapping security and the strong base of industrial experience with injecting gases into depleted reservoirs. Saline aquifers are not fully recognized and consequently the risk of the leakage to the surface is higher for saline aquifers then for oil and gas reservoirs. In the paper, the brief characterization of the oil and gas fields in Poland have been presented in the context of CO2 storing. The estimated storage potentials have been calculated formany fields with the use of the mass balance technique. The paper presents selected statistical properties of the results and correlations between reservoir conditions and storage potential. It was found that the storage capacity for most of the known depleted reservoirs was not huge but still interesting, especially for smaller power and chemical plants.
Wśród różnych typów formacji geologicznych możliwych do wykorzystania w procesie sekwestracji geologicznej, sczerpane złoża węglowodorów mają największe możliwości wykorzystania do składowania CO2. Wynika to z dużego zweryfikowanego bezpieczeństwa składowania oraz wieloletnich doświadczeń przemysłowych związanych z zatłaczaniem gazu do złóż. Rozpoznanie geologiczne głębokich poziomów wodonośnych nie jest zazwyczaj duże, co niesie ze sobą znacznie większe ryzyko ucieczki gazu w porównaniu ze złożami węglowodorów. W pracy przedstawiono charakterystykę polskich złóż węglowodorów z uwzględnieniem możliwości składowania CO2. Potencjalne pojemności składowania dla szeregu polskich złóż zostały określone w oparciu o metodę bilansu masy. Przedstawiono korelacje pomiędzy głównymi parametrami złożowymi a potencjalnymi pojemnościami magazynowymi. Z analizy wynika, iż dostępne pojemności większości złóż nie są duże, jednakże mogą być wykorzystane w skojarzeniu z mniejszymi elektrowniami i zakładami chemicznymi.
Źródło:
Gospodarka Surowcami Mineralnymi; 2009, 25, 1; 169-186
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optymalizacja infrastruktury magazynowej przedsiębiorstwa
Warehouse process optimization
Autorzy:
Tylicki, H. F.
Powiązania:
https://bibliotekanauki.pl/articles/310184.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
optymalizacja wielokryterialna
magazynowanie
infrastruktura magazynowa
regał magazynowy
multicriteria optimization
storage
storage infrastructure
storage rack
Opis:
W artykule omówiono procedurę, która umożliwia wybór elementów infrastruktury magazynowej. Algorytm wyznaczenia procedury przedstawiono na przykładzie wyboru regałów magazynowych, będących elementem infrastruktury magazynowej przedsiębiorstwa.
The article focuses on procedures used for selection of warehouse infrastructure. The algorithm used to set relevant procedures has been depicted based on an example of the selection process for warehouse racks, which are an element of storage infrastructure in an.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 1695-1698
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Long-time storage effect on the seed heaLth of spring barley grain.
Autorzy:
Wiewióra, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2199170.pdf
Data publikacji:
2009-06-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
field’ and ‘storage’ fungi
seed-borne fungi
spring barley
storage
Opis:
Seeds of 5 cultivars of spring barley, originated from field experiments conducted in 2000 at Radzików, were tested immediately after harvest and after three, four and five years of storage in uncontrolled conditions, for incidence of seed-borne fungi with special regard to “field fungi” (Bipolaris sorokiniana and Fusarium spp.) and "storage fungi" (species of Penicillium and Aspergillus). The studies showed that barley seeds were infected before storage by numerous fungi as well as the saprophytes: Alternaria alternata, Acremonium spp., Acremoniella atra and the pathogens: Bipolaris sorokiniana and ten Fusarium species. The analysis after storage showed that the frequency of fungal infection had changed. The occurrence of some fungi was significantly affected by the period of storage...
Źródło:
Plant Breeding and Seed Science; 2009, 59; 3-12
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podziemne magazynowanie energii cieplnej : metody i zastosowania
Underground thermal energy storage : methods and applications
Autorzy:
Miecznik, M.
Powiązania:
https://bibliotekanauki.pl/articles/2075511.pdf
Data publikacji:
2016
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
energia cieplna
magazynowanie energii cieplnej
warstwa wodonośna
otworowe wymienniki ciepła
kawerny
Underground Thermal Energy Storage
Aquifer Thermal Energy Storage
Borehole Thermal Energy Storage
Cavern Thermal Energy Storage
UTES
ATES
BTES
CTES
Opis:
Underground Thermal Energy Storage (UTES) is a powerful set of solutions that allows efficient management of thermal energy sources, both heat and cold, the demand of which is subjected to seasonal variations. Underground can store available in excess heat or cold for periods of up to several months and use whenever needed, especially in the opposing season. Sources of thermal energy that can be stored underground are, among others: solar thermal energy, cold winter air, waste heat from ventilation and waste heat from industrial processes. Two primary methods of under ground energy storage are Aquifer Thermal Energy Storage (ATES) where water reservoir is a thermal energy accumulator and Borehole Thermal Energy Storage (BTES) where rock formation acts as a heat/cold store. UTES allows to minimizing consumption of fossil fuels and therefore reduce costs of energy purchase, limiting the amount of greenhouse gases emission into atmosphere, and increasing energy security.
Źródło:
Przegląd Geologiczny; 2016, 64, 7; 464--471
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High speed electromechanical energy storage
Autorzy:
Rowiński, A.
Irzycki, A.
Snopkiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/246662.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
kinematic energy storage
electric motors
Opis:
Kinematical, electromechanical energy accumulator is a facility that converts supplied electrical energy to the kinetic one, stored in the rotating inertial system. Electric driving motors can operate both as a propulsion units, providing torque to the rotor shaft, and as generators in the course of braking. The prototype is designed to operate in a vacuum; the energy accumulator is located in a sealed pressurized vessel connected to the apparatus, which can generate vacuum pressure down to 1 Pa. The accumulator is destined for storage energy of 7.2 MJ at a speed of up to 20,000 1 / min. The energy accumulator is equipped with inert weight in the form of metal disc, connected to a composite band. In the course of operation, the rotor assembly is suspended in noncontact manner in housing assembly while the main body is fastened to the inner ring of the pressure vessel. The rotor consists of a shaft on which are mounted: a metal disc together with a band made of carbon fibre, inset into inert weight using epoxy resin; four disc rotors of two electric motors; two disks which are magnetic armature for electromagnetic bearings operating along the shaft axis; bushings of both sleeve bearings; fixing sleeves, washers and lock nuts to fix particular elements on the shaft. During normal operation the rotor is positioned in the radial direction through two electromagnetic bearings, top and bottom, located at both ends of shaft and operating in the differential arrangement, and in the axial direction - by a system of two eight-pole electromagnetic bearings. In the idle state rotor is based on the spherical tip of the mobile support and on the raceway of slide bearing located in the top cover. The prototype facility is designed to carry out performance tests, both under normal conditions of pressure and temperature and in vacuum environment, of: electromagnetic bearings, start-up/emergency devices, functional integration of all components and air tightness of tubing inside the tank. Measurement of radial and axial clearances between the rotor elements and housing for full speed range will be completed also.
Źródło:
Journal of KONES; 2012, 19, 2; 459-464
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of 1-MCP treatment on storage potential of tomato fruit
Autorzy:
Wrzodak, A.
Gajewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/1992.pdf
Data publikacji:
2015
Wydawca:
Instytut Ogrodnictwa
Tematy:
tomato fruit
Faustine F1 cultivar
storage potential
1-methylcyclopropene
ethylene
storage temperature
Źródło:
Journal of Horticultural Research; 2015, 23, 2
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybridization of the lithium energy storage for an urban electric vehicle
Autorzy:
Michalczuk, M.
Grzesiak, L. M.
Ufnalski, B.
Powiązania:
https://bibliotekanauki.pl/articles/202131.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lithium energy storage
ultracapacitors
hybrid energy storage
battery electric vehicle
Opis:
This paper discusses benefits of introducing an ultracapacitor (UC) bank into a battery electric vehicle (BEV) powertrain. The case of 12kWh LiFePO4 battery pack is studied quantitatively. Simulation results refer, inter alia, to three main scenarios: fresh cells, half-used battery cells, and half-used ultracapacitors and batteries. Thermal modeling is incorporated into the simulation. Data from real world are considered: various driving cycles recorded using GPS receiver (incl. elevation), discharge curves from battery manufacturer, and UC equivalent series resistance (ESR) variations due to cycling according to real data reported in papers. Cost, as well as gravimetric and volumetric issues are presented. The key decisions referring to an energy storage for BEV being currently designed within the frame of ECO-Mobility Project are highlighted.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 325-333
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A concept of an electricity storage system with 50 MWh storage capacity
Koncepcja zasobnika energii elektrycznej o zdolności magazynowania 50 MWh
Autorzy:
Paska, J.
Kłos, M.
Antos, P.
Błajszczak, G.
Powiązania:
https://bibliotekanauki.pl/articles/397626.pdf
Data publikacji:
2012
Wydawca:
ENERGA
Tematy:
magazynowanie energii elektrycznej
bateryjny zasobnik energii
pneumatyczny zasobnik energii
electricity storage systems
battery energy storage system
compressed air storage system
Opis:
Electricity storage devices can be divided into indirect storage technology devices (involving electricity conversion into another form of energy), and direct storage (in an electric or magnetic fi eld). Electricity storage technologies include: pumped-storage power plants, BES Battery Energy Storage, CAES Compressed Air Energy Storage, Supercapacitors, FES Flywheel Energy Storage, SMES Superconducting Magnetic Energy Storage, FC Fuel Cells reverse or operated in systems with electrolysers and hydrogen storage. These technologies have diff erent technical characteristics and economic parameters that determine their usability. This paper presents two concepts of an electricity storage tank with a storage capacity of at least 50 MWh, using the BES battery energy storage and CAES compressed air energy storage technologies.
Urządzenia umożliwiające magazynowanie energii elektrycznej dzielimy na: urządzenia technologii magazynowania pośredniego (z udziałem konwersji energii elektrycznej na inny rodzaj energii) i magazynowania bezpośredniego (w polu elektrycznym lub magnetycznym). Do technologii umożliwiających magazynowanie energii elektrycznej należą: elektrownie wodne pompowe; akumulatory (BES – ang. Battery Energy Storage); pneumatyczne zasobniki energii (CAES – ang. Compressed Air Energy Storage); superkondensatory (ang. Supercapacitors); kinetyczne zasobniki energii (FES – ang. Flywheel Energy Storage); nadprzewodzące zasobniki energii (SMES – ang. Superconducting Magnetic Energy Storage); ogniwa paliwowe (FC – ang. Fuel Cells) rewersyjne lub pracujące w układach z elektrolizerami i magazynowaniem wodoru. Technologie te charakteryzują się różnymi właściwościami technicznymi i parametrami ekonomicznymi, warunkującymi możliwości ich zastosowania. W artykule przedstawiono dwie koncepcje zasobnika energii elektrycznej o zdolności magazynowania co najmniej 50 MWh, wykorzystującą magazy
Źródło:
Acta Energetica; 2012, 2; 32-42
2300-3022
Pojawia się w:
Acta Energetica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena zmian jędrności jabłek w czasie przechowywania
Estimation of changes firmness apples during storage
Autorzy:
Hebda, T.
Zlobecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/35255.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
owoce
jablka
przechowywanie
jedrnosc
zmiany przechowalnicze
trwalosc przechowalnicza
odksztalcenia
fruit
apple
storage
fruit firmness
storage change
storage durability
deformation
Opis:
W pracy dokonano oceny zmian jędrności jabłek podczas przechowywania w różnych warunkach. Jabłka przechowywano w chłodni oraz w piwnicy. Badanie jędrności jabłek przeprowadzono przy pomocy maszyny wytrzymałościowej MTS sprzężonej z komputerem. Test polegał na pomiarze siły i deformacji w zakresie odkształceń niszczących. Dodatkowo badano twardość skórki w próbie przebicia. Analizę wyników przeprowadzono, wykonując wieloczynnikową analizę wariancji dla danych uzyskanych z testu ściskania oraz pomiaru jędrności. Zmiennymi niezależnymi były: miejsce przechowywania, kształt próbki i okres przechowywania. Przeprowadzono testy Duncana i wyodrębniono grupy homogeniczne. Podjęto próbę opisania zmian jędrności badanych owoców od okresu przechowywania i wyodrębniono krzywą teoretyczną o najlepszym stopniu dopasowania do rzeczywistych wyników. Określono wartości sił maksymalnych w testach ściskania oraz przebicia skórki jabłka. Stwierdzono, że w przypadku owoców przechowywanych w chłodni przełomowym miesiącem był grudzień, kiedy zaobserwowano spowolnienie utraty jędrności, która w ciągu dwóch pierwszych miesięcy przechowywania znacznie spadała oraz, że największe zmiany jędrności skórki jabłek zanotowano dla prób przechowywanych w piwnicy.
The paper presents an estimation of changes of apples firmness during storage in various conditions. Apples were stored in a cold-room and in a cellar. The apple firmness tests were carried out on an MTS strength tester connected to a computer. The tests consisted in the measurement of the values of strength and deformation in the range of destructive deformation. Additionally the hardness of skin was tested in puncture tests. Analysis of the results was conducted by means of multifactorial analysis test with multiple repetitions for all compression tests and measurements of firmness. The independent variables were the place of storage, the shape of sample and the period of storage. The Duncan test showed homogenous groups. The changes of firmness and period of storage were described and the theoretical curves with the best fit to the actual results. The maximum values of force in the compression tests and in the apple skin puncture tests were determined. In the case of apples stored in the cold-room December was the decisive month when a slow down of the firmness changes was observed. The largest changes of apple skin strength were noted for the samples stored in the cellar.
Źródło:
Acta Agrophysica; 2013, 20, 4
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elements of the theory of dams
Autorzy:
Jankiewicz, Maria
Powiązania:
https://bibliotekanauki.pl/articles/747946.pdf
Data publikacji:
1982
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Applications (congestion, allocation, storage, traffic, etc.),Inventory, storage, reservoirs
Opis:
W ostatnich trzydziestu latach teoria tam (ang. theory of dams) rozwija się szybko i odczuwalny jest niedosyt dostępnych prac przeglądowych. Znakomite prace przeglądowe i monografie Morana [52], Prabhu [62], [63], Takacsa [83] i Ganiego [24] nie zawierają najnowszych kierunków badań. Praca ta ma na celu wypełnienie tej luki.
This paper is a review of recent results in theory of dams. Only continuous-time models are considered, the dam capacity being assumed to be infinite. The results are given for the following cases: (1) The input is a process with independent increments, and release is at a constant rate; (2) the input and output processes have infinitely divisible distributions; (3) the input is a process with independent increments, and the release rate is equal to r(x), where x denotes the content of the dam; (4) the input is a semi-Markov process, and the output rate is r(x); (5) the input and output are semi-Markov processes. The bibliography includes 88 items.
Źródło:
Mathematica Applicanda; 1982, 10, 18
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyka trwalosci przechowalniczej odmian ziemniaka badanych w latach 1997-2002
Autorzy:
Sowa-Niedzialkowska, G
Powiązania:
https://bibliotekanauki.pl/articles/835695.pdf
Data publikacji:
2004
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
trwalosc przechowalnicza
przechowywanie
straty przechowalnicze
ziemniaki
ubytki naturalne
bulwy
choroby przechowalnicze
odmiany roslin
storage durability
storage
storage loss
potato
natural loss
tuber
storage disease
plant cultivar
Źródło:
Ziemniak Polski; 2004, 14, 3; 7-11
1425-4263
Pojawia się w:
Ziemniak Polski
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magazyny energii niezbędnym elementem transformacji energetycznej
Energy storage – the crucial element of energy transition
Autorzy:
Adamska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2069835.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
magazyny energii
fleksument
usługi elastycznościowe
zasobniki bateryjne
energy storage
flexumer
flexibility services
battery storage
Opis:
Zgodnie z polskim prawodawstwem magazyny energii stanowią pełnoprawny element rynku elektroenergetycznego. Obowiązujące regulacje są jednak niewystarczające i nie przekładają się na modele biznesowe będące podstawą do inwestycji w magazyny w różnych segmentach rynku: prosumenckim, przemysłowym i komercyjnym oraz wielkoskalowym. W artykule przedstawiono obecne uregulowania europejskie i polskie dotyczące magazynów energii oraz usługi, jakie magazyny mogą świadczyć na potrzeby systemu elektroenergetycznego. Wskazano również na potrzebę porozumienia sektorowego na rzecz rozwoju magazynowania energii w Polsce w celu stworzenia warunków do rozwoju krajowej branży gospodarczej.
According to Polish legislation, energy storage facilities are fully-fledged participants in the electricity market. The regulations in force are, however, insufficient and do not translate into the business models that would foster investments in storage in various segments of the market – prosumer, industrial and commercial as well as large-scale. This article presents the current European and Polish regulations concerning the energy storage facilities and the services that such storage may provide to the electric power system. Moreover, it points out the need for a sectoral agreement to be concluded on the development of energy storage in Poland with the aim of establishing conditions for the growth of this domestic industrial sector.
Źródło:
Energetyka Rozproszona; 2022, 7; 55--61
2720-0973
Pojawia się w:
Energetyka Rozproszona
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Storage systems for solar energy suitable for agriculture. Part two: electrical energy
Autorzy:
Kapica, J.
Powiązania:
https://bibliotekanauki.pl/articles/410793.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
energy storage
photovoltaic
agriculture
Opis:
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 presentation, the most recent developments in each area are presented.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 4; 63-69
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Complete Guide to Agricultural Product Processing and Storage
Autorzy:
Adiaha, M. S.
Powiązania:
https://bibliotekanauki.pl/articles/1178348.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Agricultural Storage
Food security
Mechanization
Produce processing
Opis:
In fighting global food cries, Agricultural product processing and storage plays an important role in food and feed preservation for the continual survival of man. Through the development of modern storage facilities, food crop preservation becomes easy and simple to follow. Rice and oil palm is a selected few agricultural product that will be taken into consideration in the course of this work. The study was conducted in Obubra Local Government Area of Cross River State, Nigeria, Storage experimentations were done at Faculty of Agriculture and Forestry Multipurpose screen house. The study was conducted with the aim to look into processing procedures and find possible solutions to the problems facing the farmers and agricultural machine operators in Agric business. Low level of mechanisation was observed to be high in areas visited during the period of this research.
Źródło:
World Scientific News; 2017, 81, 1; 1-52
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data storage management using AI methods
Autorzy:
Funika, W.
Szura, P.
Powiązania:
https://bibliotekanauki.pl/articles/305446.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
data management
AI
fuzzy logic
rules
data storage
Opis:
Data management and monitoring is an important issue in scientific computation. Scientists want to access their data as quickly as possible. Some experiments need to store a lot of data which have to be secure. By saying this we mean that this data can not disappear or be damaged also the data storage should be as cheap as possible. In this paper we present an approach to the automation of monitoring and management of data storage. We introduce a knowledge based system which is able to manage data, i.e., make decisions on migrating data, replicating or removing it. We discuss some of the existing solutions which are popular on the market. In this paper we aim to present our system which uses such AI techniques like fuzzy logic or a rule-based expert system to deal with data storage management. We exploit in this system a cost model to analyze the proposed solutions. The operations performed by our system are aimed to optimize the usage of the monitored infrastructure.
Źródło:
Computer Science; 2013, 14 (2); 177-190
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical and simulation determination of order picking time in a low storage warehouse for shared storage systems
Autorzy:
Dmytrów, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/2175840.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
warehouse management
order picking
shared storage
multi-criteria decision-making
simulation method
Opis:
The aim of the research is comparison between average order picking times obtained using the analytical model and simulation methods for shared storage systems. We also compare the results obtained with the results obtained for dedicated storage. We assume the random and ABC-class storage (with within and across aisle storage policies). We select the locations by means of the TOPSIS method for two take-out strategies: quantity adjustment (QA) and priority of partial units (PPU). We determine the route by using s-shape and return heuristics. In most cases, the simulated average order picking times are shorter than the analytical ones. It results from not considering the criteria’ weights in calculation of the analytical order picking time. Also, the results for shared storage with QA strategy are in most cases better than for dedicated storage. This might imply an advantage of shared over dedicated storage, but needs further confirmation.
Źródło:
Operations Research and Decisions; 2022, 32, 2; 34--51
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of the objective function for optimization of a seasonal thermal energy storage system
Autorzy:
Milewski, J.
Szabłowski, Ł.
Bujalski, W.
Powiązania:
https://bibliotekanauki.pl/articles/240823.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
thermal energy
solar
storage
seasonal storage
energia cieplna
magazynowanie
Opis:
The article shows the proposed solution of the objective function for the seasonal thermal energy storage system. In order to develop this function the technological and economic assumptions were used. In order to select the optimal system configuration mathematical models of the main elements of the system were built. Using these models, and based on the selected design point, the simulation of the entire system for randomly generated outside temperatures was made. The proposed methodology and obtained relationships can be readily used for control purposes, constituting model predicted control (MPC).
Źródło:
Archives of Thermodynamics; 2014, 35, 4; 69-81
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 2046

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