Search results for: ENERGY.

• Stirling engines powered by renewable energy sources

  Publication

  • J. Kropiwnicki

  - Year 2015

  Stirling engine is a device that produces mechanical energy using heat from any source of energy, without the need of combustion of any fuel inside the device. Renewable energy sources, which are mostly low-temperature energy sources, can be used to produce mechanical and electrical energy in Stirling engines. The paper presents an overview of the existing prototype Stirling engines designed for using of low-temperature energy...

• Energy Security of Polish Consumers in 2004-2021

  Publication

  • K. Gomółka
  • P. Kasprzak

  - Annales Universitatis Mariae Curie-Skłodowska, Sectio H Oeconomia - Year 2022

  Theoretical background: Energy security is one of the most important components of economic security. It is influenced not only by access to energy sources and the economic situation of the state and the individual consumer. The authors adopted the definition of energy security of an individual consumer as included in the UN report. It states that energy security of an individual consumer is guaranteed when the average consumer...

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• LattE- first-principles lattice energy calculations

  Publication

  • A. Okuniewski

  - Year 2011

  Crystal engineering is currently attracting much interest. Its aim is to create materials of predefined properties fulfilling the requirements imposed by the applications. There are several parameters describing crystal structures, but the most important one is probably the energy of a crystal lattice. It is the energy released by the system when crystalline solid is formed out of molecules or ions in gaseous phase. Approximate...

• Losses and energy efficiency of drive motors and systems

  Publication

  • Z. Paszota

  - Polish Maritime Research - Year 2013

  Losses and energy efficiency of every drive motor must be presented as functions of physical quantities independent of losses in the motor. Such quantities are speed and load required by the machine or device driven by the motor, changing in the drive operating field. Speed and load of the motor decide of the instantaneous useful power of the motor and also in a differentiated way of kinds and values of losses occurring in the...

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• Losses and energy efficiency of drive motors and systems

  Publication

  • Z. Paszota

  - Year 2013

  Losses and energy efficiency of every drive motor must be presented as functions of physical quantities independent of losses in the motor. Such quantities are speed and load required by the machine or device driven by the motor, changing in the drive operating field. Speed and load of the motor decide of the instantaneous useful power of the motor and also in a differentiated way of kinds and values of losses occurring in the...

• Improvements and Spatial Dependencies in Energy Transition Measures

  Publication

  • M. Kuc-Czarnecka
  • M. Olczyk
  • M. Zinecker

  - ENERGIES - Year 2021

  This article aims to improve one of the newest energy transition measures—the WorldEconomic Forum WEF Energy Transition Index (ETI) and find its driving forces. This paper proposesa new approach to correct the ETI structure, i.e., sensitivity analysis, which allows assessing theaccuracy of variable weights. Moreover, the novelty of the paper is the use the spatial error modelsto estimate determinants of the energy transition on...

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• GRAPHENE-BASED SUPERCAPACITORS APPLICATION FOR ENERGY STORAGE

  Publication

  • M. Łuszczek

  - Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej - Year 2018

  Recent advances in graphene-based supercapacitor technology for energy storage application were summarized. The comparison of different types of electrode materials in such supercapacitors was performed. The supercapacitors with graphene-based electrodes exhibit outstanding performance: high charge-discharge rate, high power density, high energy density and long cycle-life, what makes them suitable for various applications, e.g....

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• Energy Consumption Modeling in SPMD and DAC Applications

  Publication

  • J. Kuchta

  - Year 2016

  In this chapter, we show a study of energy consumption during execution of SPMD and DAC application – the same applications which time of execution we modeled in the previous two chapters. We measured an average power usage at a single node of the GALERA+ cluster during application execution and then we modeled the total energy consumption by the application. Next we simulated the applications using MERPSYS and we compared the...

• Energy efficient beam control for 5G antennas

  Publication

  • D. Duraj
  • L. Leszkowska
  • W. Kalista
  • K. Trzebiatowski
  • Ł. Kulas
  • K. Nyka

  - Year 2023

  The rapid development of 5G and beyond systems demands improvement in communication speed, latency and safety to maintain the required quality of service. This paper presents an overview of different concepts of energy-efficient antenna systems, which offer beam-shaping and beam-steering functionalities, that enhance connectivity performance and can be used in 5G applications. Different designs for 5.9 GHz, 39 GHz and 60 GHz frequency...

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• Reactive Energy Billing in Operator Tariffs in Poland

  Publication

  • P. Bućko
  • A. Wilczyński

  - Acta Energetica - Year 2015

  The paper describes the current method of reactive energy billing in the tariffs of distribution grid operators in Poland. The current solutions are subject to critical assessment. Issues related to the motivation effect of the current solutions on consumers are analysed. Problems that occur in relation with connecting distributed generators to the distribution grid and challenges related to prosumer billing are indicated.

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• High-efficient, zero-emission energy production

  Publication

  • P. Ziółkowski
  • W. Zakrzewski

  - Year 2013

  This paper presents innovative thermodynamiccycles with high-efficient, zero-emission energy production. The main aim of this work is to show the role of nano-phenomena in the enhancement of the power of thermodynamic cycles. For that purpose, the cycles using oxy-combustion and spray ejected condensation are first studied and, secondly hybrid cycles using fuel cells and gas turbines are presented. The role of nano-phenomena in...

• If Gravity is Geometry, is Dark Energy just Arithmetic?

  Publication

  • M. Czachor

  - INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS - Year 2017

  Arithmetic operations (addition, subtraction, multiplication, division), as well as the calculus they imply, are non-unique. The examples of four-dimensional spaces, R^4 and (−L/2,L/2)^4, are considered where different types of arithmetic and calculus coexist simultaneously. In all the examples there exists a non-Diophantine arithmetic that makes the space globally Minkowskian, and thus the laws of physics are formulated in terms...

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• Advanced Potential Energy Surfaces for Molecular Simulation

  Publication

  • A. Albaugh
  • H. Boateng
  • R. Bradshaw
  • O. Demerdash
  • J. Dziedzic
  • Y. Mao
  • D. Margul
  • J. Swails
  • Q. Zeng
  • D. Case... and 10 others

  - JOURNAL OF PHYSICAL CHEMISTRY B - Year 2016

  Advanced potential energy surfaces are defined as theoretical models that explicitly include many-body effects that transcend the standard fixed-charge, pairwise-additive paradigm typically used in molecular simulation. However, several factors relating to their software implementation have precluded their widespread use in condensed-phase simulations: the computational cost of the theoretical models, a paucity of approximate models...

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• Water needs of production of biomass for energy in Poland

  Publication

  • P. Kowalik
  • R. Scalenghe

  - POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Year 2009

  Przedstawiono polskie zamierzenia polityczne dotyczące rozwoju produkcji biomasy do celów energetycznych. Produkcja biomasy wymagać będzie zwiększonego zużycia wody przez rośliny. Wprawdzie w Polsce potrzeby wodne roślin energetycznych będą 2-3 krotnie niższe niż w krajach śródziemnomorskich, tym niemniej opady atmosferyczne w Polsce będą niewystarczające i potrzeby wodne wymagać będą nawodnień na poziomie 50% aktualnych opadów...

• Energy levels in CaWO4:Tb3+ at high pressure

  Publication

  • S. Mahlik
  • E. Cavalli
  • M. Amer
  • P. Boutinaud

  - PHYSICAL CHEMISTRY CHEMICAL PHYSICS - Year 2015

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• Energy of change in commercial, innovative and inteligent spaces

  Publication

  • K. Życzkowska

  - Year 2012

  W artykule miasto zostanie zakwalifikowane do przestrzeni komercyjnych, które charakteryzuje ciągłe dążenie do atrakcyjności. Napędza to wykorzystywanie rozwiązań innowacyjnych w zakresie kształtowania przestrzeni, będących nowym źródłem miejskiej energii. W artykule uwaga skupi się innowacyjności przestrzeni, wynikającej z udziału technologii informacyjnych, które na styku z architekturą i sztuką czynią tą przestrzeń inteligentną....

• Numerical simulation of energy buoy motion in wave

  Publication

  • C. Dymarski
  • P. Dymarski

  - Year 2011

  W pracy przedstawiono opis numerycznej metody modelowania ruchu boi energetycznej na fali. Wyniki obliczeń porównano z wynikami otrzymanymi z badań modelowych przeprowadzonych w basenie hydromechanicznym.

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• Research of energy efficiency of laboratory photovoltaic installation

  Publication

  • A. Mroziński

  - Journal of Civil Engineering, Environment and Architecture - Year 2014

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• Mechanism for Damage to DNA by Low-Energy Electrons

  Publication

  • R. Barrios
  • P. Skurski
  • J. Simons

  - JOURNAL OF PHYSICAL CHEMISTRY B - Year 2002

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• Analysis of the interfacial energy of GaAs-Si hetrostructures

  Publication

  • A. Zdyb
  • J. M. Olchowik
  • D. Szymczuk
  • J. Mucha
  • K. Zabielski
  • M. Mucha
  • W. Sadowski

  - CRYSTAL RESEARCH AND TECHNOLOGY - Year 2002

  Przeprowadzono obliczenia numeryczne energii powierzchni heterogranicy GaAs-Si z zastosowaniem półempirycznego modelu czteroparametrycznego Acklanda. Pokazano zależność energii heterogranicy od orientacji podłoża Si. Minima energetyczne otrzymano dla orientacji Si równych (011), (133), (112) i (113) co wskazuje ich zastosowanie do epitaksjalnego wzrostu warstw GaAs.

• Low-energy electron-hexafluoropropene (C3F6) scattering

  Publication

  • C. Szmytkowski
  • S. Kwitnewski
  • P. Możejko
  • E. Ptasińska-Denga

  - PHYSICAL REVIEW A - Year 2002

  Zmierzono przekrój czynny na rozproszenie elektronów na drobinie C3F6 a zakresie energii 0.5 - 30 eV. Zaobserwowano dwa maksima o charakterze rezonansowym dla energii 3.2 eV oraz 9.5 eV. Wykazano wyraźny wpływ fluoryzacji na otrzymywane zależności energetyczne przekroju czynnego.

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• Renewable and Sustainable Energy: Current State and Prospects

  Publication

  • B. Igliński
  • M. B. Pietrzak

  - ENERGIES - Year 2022

  The last two decades of the twentieth century represented a period of above-average, systematic growth of formal and informal interdependencies between economies of different countries and between world markets. The intensity, magnitude, and diversity of these interdependencies have never been recorded before in economic history, and the market transformations taking place have been referred to in the literature as the process...

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• Adiabatic potential energy surfaces of the vinoxy radical

  Publication

  • K. Piechowska
  • M. C. Bacchus-Montabonel
  • Y. S. Tergiman
  • J. E. Sienkiewicz

  - Year 2005

  Zostały obliczone powierzchnie energetyczne stanu podstawowego i dwóch najniższych stanów wzbudzonych.

• Energy optimisation in resilient self-stabilizing processes

  Publication

  • A. Kosowski
  • Ł. Kuszner

  - Year 2006

  W pracy rozważa się rozproszony model obliczeń, w którym struktura systemu jest reprezentowana przez graf bezpośrednich połączeń komunikacyjnych. W tym modelu podajemy nowy samostabilizujący algorytm kolorowania grafów oparty na konstrukcji drzewa spinającego. Zgodnie z naszą wiedzą jest to pierwszy algorytm z gwarantowaną wielomianową liczbą ruchów, który dokładnie koloruje grafy dwudzielne.

• Collaborative development model and strategies of multi-energy industry clusters: Multi-indicators analysis affecting the development of coastal energy clusters

  Publication

  • C. Xiu
  • A. Lis

  - ENERGY - Year 2024

  The paper explores Coastal Energy-Based Industrial Clusters (EBICs) and their role in advancing energy efficiency and sustainability through collaborative innovation. Economic growth theory and energy sustainability have been introduced into industrial clusters to illustrate indicators that have a greater impact on the development of EBICs. This paper proposes an EBICs development model based on the Cobb-Douglas function, in which...

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• Journal of Energy Storage

  Journals

  ISSN: 2352-152X

• Economics of Energy & Environmental Policy

  Journals

  ISSN: 2160-5882 , eISSN: 2160-5890

• International Journal of Energy and Statistics

  Journals

  ISSN: 2335-6804 , eISSN: 2335-6812

• Energy Education Science and Technology

  Journals

  ISSN: 1301-8361

• Journal of Energy and Power Engineering

  Journals

  ISSN: 1934-8975

• Energy Research & Social Science

  Journals

  ISSN: 2214-6296 , eISSN: 2214-6326

• Advances in Building Energy Research

  Journals

  ISSN: 1751-2549 , eISSN: 1756-2201

• Advances in High Energy Physics

  Journals

  ISSN: 1687-7357 , eISSN: 1687-7365

• Journal of High Energy Astrophysics

  Journals

  ISSN: 2214-4048 , eISSN: 2214-4056

• International Journal of Ambient Energy

  Journals

  ISSN: 0143-0750 , eISSN: 2162-8246

• International Journal of Sustainable Energy

  Journals

  ISSN: 1478-6451 , eISSN: 1478-646X

• IEEE Transactions on Sustainable Energy

  Journals

  ISSN: 1949-3029

• BIOINFO Renewable & Sustainable Energy

  Journals

  ISSN: 2249-1694

• International Journal of Marine Energy

  Journals

  ISSN: 2214-1669

• IEEE Power & Energy Magazine

  Journals

  ISSN: 1540-7977 , eISSN: 1558-4216

• High Energy Density Physics

  Journals

  ISSN: 1574-1818 , eISSN: 1878-0563

• IEEJ Transactions on Power and Energy

  Journals

  ISSN: 0385-4213

• International Journal on Energy Conversion

  Journals

  ISSN: 2281-5295

• Sustainable Energy Technologies and Assessments

  Journals

  ISSN: 2213-1388 , eISSN: 2213-1396

• Sustainable Energy Grids & Networks

  Journals

  ISSN: 2352-4677

• Journal of Ocean and Wind Energy

  Journals

  ISSN: 2310-3604

• Economics and Policy of Energy and the Environment

  Journals

  ISSN: 2280-7659

• INTERNATIONAL JOURNAL OF ENERGY RESEARCH

  Journals

  ISSN: 0363-907X , eISSN: 1099-114X

• Journal of the Japan Institute of Energy

  Journals

  ISSN: 0916-8753 , eISSN: 1882-6121

• Strategic Planning for Energy and the Environment

  Journals

  ISSN: 1048-5236