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Search results for: energy%20storage
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Scrutiny of power grids by penetrating PV energy in wind farms: a case study of the wind corridor of Jhampir, Pakistan
PublicationThis study examines the problems caused by intermittent renewable energy sources, especially wind farms, and suggests a different solar energy penetration strategy to improve their loading capacity. The study uses real-time data from a wind farm in Jhampir, Pakistan, to analyse and assess various aspects of grid stations connected to wind farms. Electrical Transient Analyzer Program is used to validate the results by linking these...
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H2O˙+ and OH+ reactivity versus furan: experimental low energy absolute cross sections for modeling radiation damage
PublicationRadiotherapy is one of the most widespread and efficient strategies to fight malignant tumors. Despite its broad application, the mechanisms of radiation-DNA interaction are still under investigation. Theoretical models to predict the effects of a particular delivered dose are still in their infancy due to the difficulty of simulating a real cell environment, as well as the inclusion of a large variety of secondary processes. This...
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Review of Methods for Diagnosing the Degradation Process in Power Units Cooperating with Renewable Energy Sources Using Artificial Intelligence
PublicationThis work is based on a literature review (191). It mainly refers to two diagnostic methods based on artificial intelligence. This review presents new possibilities for using genetic algorithms (GAs) for diagnostic purposes in power plants transitioning to cooperation with renewable energy sources (RESs). The genetic method is rarely used directly in the modeling of thermal-flow analysis. However, this assignment proves that the...
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Reducing Air Pollutant Emissions from the Residential Sector by Switching to Alternative Energy Sources in Single-Family Homes
PublicationThe paper discusses a scenario for adapting residential buildings to the requirements of the EU climate and energy package. It analyzes the option of reducing pollutant emissions to ambient air by switching to alternative energy sources in a typical single-family residential building. The most common sources of energy in central heating and ventilation systems and water heating systems were compared, and the analyzed energy carriers...
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Strategies for Achieving Energy Neutrality in Biological Nutrient Removal Systems – a Case Study of the Slupsk WWTP (northern Poland)
PublicationThe paper presents a model-based evaluation of technological upgrades on the energy and cost balance in a large biological nutrient removal wastewater treatment plant (WWTP) in the city of Slupsk (northern Poland). The proposed upgrades include chemically enhanced primary sludge removal and reduction of the nitrogen load in the deammonification process employed for reject water treatment. Simulations enabled to estimate the increased...
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Assessment of the factors influencing on the formation of energy-oriented modes of electric power consumption by water-drainage installations of the mines
PublicationPurpose. Performing the analysis to determine energy-efficient modes and assess the characteristics of the main indicators of electric power consumption by mine water-drainage installations based on the developed research mathematical model. Methods. To achieve the purpose set, a methodology is used to develop the multiple multifactor correlation-regression modeling with respect to the modes of electric power consumption by electrical...
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Dynamic GPU power capping with online performance tracing for energy efficient GPU computing using DEPO tool
PublicationGPU accelerators have become essential to the recent advance in computational power of high- performance computing (HPC) systems. Current HPC systems’ reaching an approximately 20–30 mega-watt power demand has resulted in increasing CO2 emissions, energy costs and necessitate increasingly complex cooling systems. This is a very real challenge. To address this, new mechanisms of software power control could be employed. In this...
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Quantitative and Qualitative Composition of Bacterial Communities of Malting Barley Grain and Malt during Long-Term Storage
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A comprehensive review of sectorial contribution towards greenhouse gas emissions and progress in carbon capture and storage in Pakistan
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Polylactide-Based Films with the Addition of Poly(ethylene glycol) and Extract of Propolis—Physico-Chemical and Storage Properties
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Processes and the Resulting Water Quality in the Medium size Turawa Storage Reservoir after 60 Year Usage
PublicationThe Turawa reservoir built on the Mała Panew river is one of important storage reservoirs in Poland. Quite many physico-chemical parameters of water in the reservoir itself and also in the reservoir inflowing rivers at different times of the year were measured and compared. The changes of water characteristics as well as their reasons and consequences were discussed.
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Influence of pyrolysis atmosphere on the lithium storage properties of carbon-rich polymer derived SiOC ceramic anodes
PublicationPolymer derived carbon-rich SiOC ceramics are prepared from polysiloxane precursors through a pyrolysis process at 1000 °C using pure argon and argon/hydrogen mixture as pyrolysis atmosphere. The precursor is synthesized from a linear (Si–H)-containing polysiloxane cross-linked with divinylbenzene using hydrosilylation reaction in the presence of a platinum catalyst. Pyrolysis in Ar/H2 mixtures, compared to the treatment under...
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A model, design, and implementation of an efficient multithreaded workflow execution engine with data streaming, caching, and storage constraints
PublicationThe paper proposes a model, design, and implementation of an efficient multithreaded engine for execution of distributed service-based workflows with data streaming defined on a per task basis. The implementation takes into account capacity constraints of the servers on which services are installed and the workflow data footprint if needed. Furthermore, it also considers storage space of the workflow execution engine and its cost....
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Multi-Objective Water Distribution Systems Control of Pumping Cost, Water Quality, and Storage-Reliability Constraints
PublicationThis work describes a multi-objective model for trading-off pumping cost and water quality for water distribution systems operation. Constraints are imposed on flows and pressures, on periodical tanks operation, and on tanks storage. The methodology links the multi-objective SPEA2 algorithm with EPANET, and is applied on two example applications of increasing complexity, under extended period simulation conditions and variable...
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Silicon oxycarbide ceramics as anodes for lithium ion batteries: influence of carbon content on lithium storage capacity
PublicationWe report here on the synthesis and characterization of silicon oxycarbide (SiOC) in view of its application as a potential anode material for Li-ion batteries. SiOC ceramics are obtained by pyrolysis of various polysiloxanes synthesized by sol–gel methods. The polysiloxanes contain different organic groups attached to silicon, which influence the chemical composition and the microstructure of the final ceramic product. The structure...
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Hyperbaric Storage at Subzero Temperature – the Effect on the Shelf-Life and Selected Quality Characteristics of Raw Pork Sausages
PublicationThe aim of this study was to determine the microbiological stability and changes occurring in selected physicochemical properties of raw pork sausages during hyperbaric storage at subzero temperature (HS-ST). It was shown that storage at moderate pressures (up to 111 MPa) led to a reduction in microbial populations. After 21 days of storage under these conditions, no microorganisms were detected in the samples. Additionally, the...
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Leaf wettability and plant surface water storage for common wetland species of the Biebrza peatlands (northeast Poland)
PublicationWetlands play a crucial role in buffering the effects of climate change. At the same time, they are one of the most endangered ecosystems on the globe. The knowledge of the water cycle and energy exchange is crucial for the practical preservation and exploiting their capabilities. Leaf wettability is an important parameter characterising the plant's ability to retain water on its surface, and is linked to the ecosystems' hydrological...
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Experimental and numerical investigation on shell and coil storage unit with biodegradable PCM for modular thermal battery applications
PublicationThermal energy storage (TES) in automotive applications is currently growing in importance. TES can visibly reduce primary energy consumptions, decrease CO2 emission, and improve thermal comfort in electric as well as hybrid vehicles. However, to meet the new ambitious target (15% reduction of CO2 emissions in the new cars until 2025) it is required to use plug-in electric vehicles. For this reason, this paper focuses on the optimization...
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Battery Technologies in Electric Vehicles: Improvements in Electric Battery Packs
PublicationRestrictions on fossil fuels and related environmental pollution issues motivate many organizations and countries to set their focus on electric vehicles (EVs) rather than conventional internal combustion engine vehicles [1], [2]. EVs require an energy storage system to store converted electric power in another form of energy and then reconvert the stored energy to electric power whenever it is required. The energy stored can be...
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Hydraty metanu jako źródło energii
PublicationHydraty metanu są strukturami krystalicznymi, składającymi się z cząsteczki gazu otoczonej cząsteczkami wody. Koncentrują one ogromne ilości metanu - szacuje się, że ok. 10 tys. Gt węgla organicznego jest uwięzionych w złożach hydratów. Dwukrotnie przewyższa to ilość węgla organicznego dostępnego w postaci konwencjonalnych paliw kopalnych
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Proekologiczne odnawialne źródła energii. Kompendium
PublicationW książce omówiono podstawy teoretyczne i praktyczne aspekty wykorzystania proekologicznych źródeł energii, odnosząc sie jednocześnie do źródeł konwencjonalnych. Tematem nadrzędnym książki jest szeroko rozumiana ochrona środowiska niszczonego głównie przez przemysł, którego siłą napędową, podobnie jak i całej naszej cywilizacji, jest energetyka konwencjonalna oparta na paliwach naturalnych: węglu, ropie i gazie. Produkty spalania...
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Magazynowanie ciepła i energia odpadowa
PublicationPrzedstawiono technologie magazynowania ciepła, opisano wybrane konstrukcje magazynów ciepła i ich zasadę działania, zdefiniowano pojęcie energii odpadowej oraz wskazano wybrane urządzenia i układy służące do odzyskiwania energii cieplnej.
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Kierunki rozwoju rynku energii skojarzonej
PublicationPrzedstawiono kierunki rozwoju energetyki skojarzonej. Uwzględniono rolę gazu ziemnego dla rozwoju kogeneracji.
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Odnawialne źródła energii : elektrownie wiatrowe
PublicationRecenzja referatów podsekcji IV.1. Źródła generacji rozproszonej, w tym elektrownie wiatrowe.
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Doświadczenia i wyzwania rynku energii.
PublicationPrzedstawiono oświadczenia i wyzwania rynku energii w Polsce w perspektywie ostatnich 25 lat.. Pokazano trendy rozwojowe elektroenergetyki.
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Woda i energia - rys historyczny
Publication.././.
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Energia przestrzeni publicznej współczesnego miasta
PublicationPojęcie piękna w pejzażu miejskim stało się względne. Liczy się aura miejsca, atrakcyjność, walor, przyciąganie odbiorców, najlepiej bez względu na porę dnia i roku. Nie zawsze jednak przestrzeń publiczna obdarza odbiorcę dobrą energią. Czasem, wbrew oczekiwaniom pomysłodawców oferty konsumpcyjnej dla owej przestrzeni, uznana zostaje za odpychającą. Zjawisko generowania dobrych, lub określanych jako złe, energii przez istniejące...
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Rekuperace elektrické energie v MHD
PublicationAsynchronní pohony, motory BLDC, trakční invertory, IGBT tranzistory, rekuperace energie – to jsou hesla, se kterými se můžeme často potkat, když si pročteme propagační materiály výrobců moderních tramvají a trolejbusů. Často se nám tyto prvky jeví jako indikátory hypermoderních technologií, ale ve skutečnosti se stává, že pod některými názvy se skrývá řešení známé inženýrům už dlouhá desetiletí. Tak je tomu také s rekuperací elektrické...
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Odnawialne źródła energii, a opinia społeczna
PublicationCelem artykułu jest przedstawienie opinii społecznej na temat stosunku do odnawialnych źródeł energii. Artykuł przedstawia także stan wiedzy społeczeństwa na temat energetyki jądrowej. Uzyskane danej pozwalają stwierdzić, że ponad połowa ankietowanych pozytywnie odnosi się do budowy elektrowni jądrowej w Polsce, ale już tylko 19% z nich chciałoby zamieszkać w jej sąsiedztwie. Osoby niemające zdania co do elektrowni jądrowej stanowią...
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Ekologiczne aspekty wytwarzania energii elektrycznej.
PublicationPrzedstawiono zakres tematyczny i podsumowano konferencję na temat ekologicznych aspektów wytwarzania energii elektrycznej. Konferencja została zorganizowana przez SEP, Komitet Problemów Energetyki PAN oraz Instytut Energetyki. Przedstawiono wnioski z wszystkich sześciu sesji, w tym sesji dotyczących światowych tendencji elektroenergetyki oraz perspektyw tego rozwoju w Polsce, zobowiązań w zakresie ochrony środowiska, technologii...
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Dylematy rozwoju rynków energii odnawialnej
PublicationW artykule przedstawiono mechanizmy wsparcia rozwoju źródeł energii wykorzystujących zasady energii odnawialnej. Przedstawiono stosowane w Unii Europejskiej zasady obrotu energią elektryczną ze źródeł odnawialnych.
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Energia geotermalna w kopalniach podziemnych.
PublicationOmówiono przebieg Międzynarodowej Konferencji Naukowej Energia Geotermalna w Kopalniach Podziemnych. Scharakteryzowano wszystkie wygłoszone referaty.
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Przykłady wykorzystania odnawialnych źródeł energii
PublicationPokazano ilustracje wybranych przykładów ciekawych rozwiązań technicznych zagospodarowujących energię odnawialną, zrealizowanych ostatnio na terenie woj. pomorskiego.
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Biomasa jako źródło energii odnawialnej
PublicationHistoria wykorzystania biomasy jako źródła energii jest znana od początku istnienia ludzkości i nieodzownie towarzyszy człowiekowi. Spalanie znane jest jako pierwsza metoda konwersji biomasy drzewnej w celu produkcji energii cieplnej, która stanowiła podstawę bytu. Obecnie, po latach eksploatacji, głównym celem gospodarki biomasą jest redukcja odpadów pochodzenia organicznego, zwłaszcza tych, które będą składowane, ale również...
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HIERARCHICAL CYCLES IN MODERN POWER SYSTEMS – EXERGY ANALYSIS UNDER PART LOADS
PublicationThe aim of the paper is to investigate thermodynamic efficiency of advanced hierarchic power cyclesunder partial loads by using of exergy analyze. Advanced hierarchical power systems arecomposed of few energy conversion cycles, most common are steam and gas cycles in various configurations, but they may contain fuel cells, ORC, lithium bromide absorption chillers and others. Moreover hierarchical cycles can be powered by several...
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Tb3+ ions in presence of ZnS:Mn2+ nanocrystals immobilized on silica: Energy transfer ZnS→Tb3+ and coordination state of Mn2+ ions
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Luminescent GeO2–Pb–Bi2O3 glasses co-doped with Tb3+1 and Eu3+: Excitation energy transfer and color chromaticity
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Decision Support in Selecting a Reliable Strategy for Sustainable Urban Transport Based on Laplacian Energy of T-Spherical Fuzzy Graphs
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Pyrolysis Process of Whole Waste Tires as A Biomass Energy Recycling / Piroliza Opon Samochodowych Jako Energetyczny Recykling Biomasy
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Evaluation of the relative thermoluminescence efficiency of LiF:Mg,Ti and LiF:Mg,Cu,P TL detectors to low-energy heavy ions
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Research on the Relationship between CO2 Emissions, Road Transport, Economic Growth and Energy Consumption on the Example of the Visegrad Group Countries
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Application of low-cost Gallium Arsenide light-emitting-diodes as kerma dosemeter and fluence monitor for high-energy neutrons
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SU-FF-T-284: Linear Energy Transfer (LET) Dependence of BANG® Polymer Gel Dosimeters in Proton Beams
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Activation Energy and Inclination Magnetic Dipole Influences on Carreau Nanofluid Flowing via Cylindrical Channel with an Infinite Shearing Rate
PublicationThe infinite shear viscosity model of Carreau fluid characterizes the attitude of fluid flow at a very high/very low shear rate. This model has the capacity for interpretation of fluid at both extreme levels, and an inclined magnetic dipole in fluid mechanics has its valuable applications such as magnetic drug engineering, cold treatments to destroy tumors, drug targeting, bio preservation, cryosurgery, astrophysics, reaction kinetics,...
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Low energy inelastic electron scattering from carbon monoxide: I. excitation of the a3Π, a’3Σ+ and AΠ1 electronic states.
PublicationDifferential scattering cross sections for electron excitation of the three lowest excited electron states of carbon monoxide are obtained experimentally using low-energy electron energy-loss spectroscopy and theoretically using the R-matrix method. The incident electron energies range from near-threshold of 6.3 eV to 20 eV. Experimental scattering angles range from 20◦ to 120◦. The normalization of the experimental cross sections...
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SMART AND RESILIENT CITIES – NEW CHALLENGES FOR POLISH CITIES IN TERMS OF 2020 BUILDING ENERGY EFFICIENCY AND CLIMATE CHANGE ACTION.
PublicationGlobal climate change action along with energy efficiency optimizations are becoming increasingly pressing principles in terms of moving towards sustainable development. As a member of EU and UN Poland is also obliged to follow restricted rules concerning energy efficiency of buildings which come to force in 2020. To meet new goals, innovative approaches - like moving towards smart and resilient cities -may be required. Through...
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Development of Strategies for AOB and NOB Competition Supported by Mathematical Modeling in Terms of Successful Deammonification Implementation for Energy-Efficient WWTPs
PublicationNovel technologies such as partial nitritation (PN) and partial denitritation (PDN) could be combined with the anammox-based process in order to alleviate energy input. The former combination, also noted as deammonification, has been intensively studied in a frame of lab and full-scale wastewater treatment in order to optimize operational costs and process efficiency. For the deammonification process, key functional microbes include...
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Balancing energy consumption in limited power grid with active front-end and three phase dual active bridge system
PublicationPaper deals with simulation analysis of bidirectional power converters system for charging station of electric vehicle in condition of limited power source in city infrastructure. In case of incapability to provide additional power supply through the grid by virtue of historical, architectural and economic reasons it is possible to solve this issue by implementation of mobile battery-powered supply source. The proposed bidirectional...
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Study of structural and optical properties of tio2:tb thin films prepared by high energy reactive magnetron sputtering method
Publicationw pracy zaprezentowano wyniki badań optycznych i strukturalnych cienkich warstw na bazie domieszkowanego tlenku tytanu. warstwy tlenkowe wytworzono zmodyfikowaną metodą rozpylania magnetronowego z targetu mozaikowego w atmosferze tlenu. badania strukturalne wykazały nanokrystaliczność badanych warstw.
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Use of Modified Cuckoo Search algorithm in the design process of integrated power systems for modern and energy self-sufficient farms
PublicationIn the face of increasingly stringent pollutant emission regulations, designing an agricultural holding becomes a difficult challenge of connecting a large number of coefficients that describe an energy system of a farm in regard to its ecological and economic efficiency. One way to cope with this issue is to design an energy self-sufficient farm that integrates various technologies, including renewable energy. However, the selection...