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Search results for: radiationless energy transfer
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Effect of the let-through energy of overcurrent protective devices on the temperature of conductors during short-circuits
PublicationThe scope of the verification of low-voltage systems covers the earth fault loop impedance measurement. This measurement is usually performed with the use of low-value current meters, which force a current many times lower than the one occurring during a real short-circuit. Therefore, the international standard recommends consideration of the increase of resistance of conductors with the increase of temperature, which may occur...
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The Energy Potential of the Lower Vistula River in the Context of the Adaptation of Polish Inland Waterways to the Standards of Routes of International Importance
PublicationBased on new policies of the European Union, green technologies are to be mostly considered for power generation. Hydropower generation is one of the essential elements of sustainable energy production. Therefore, specific attention, both economically and technically, needs to be given to this sector of energy production. The Vistula River in Poland is considered an international waterway. The power production potential of the...
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MoS2-containing composite membranes for separation of environmental energy-relevant liquid and gas mixtures: A comprehensive review
PublicationMolybdenum sulfide (MoS2) materials adapted into membranes have demonstrated potential for different areas dealing with molecular separations. For instance, MoS2-based membranes have been proposed for distinct environmental applications, such as water treatment, seawater desalination, gas separation, and solvent separation. Emergently, such membranes have been ultimately investigated for energy-relevant gas separation mixtures,...
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Tailoring a low-energy ball milled MnCo2O4 spinel catalyst to boost oxygen evolution reaction performance
PublicationThe development of cost-efficient oxygen evolution reaction (OER) catalysts is one of the most important tasks facing modern techniques for hydrogen production. In this work, for the first time, a low-energy ball milling process of MnCo2O4 (MCO) spinel powders, with a mechanical modification time exceeding 1 day was used. After 6 days of ball-milling, the obtained overpotential of the electrocatalyst reached the value of 375 mV...
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Utilization of rapeseed pellet from fatty acid methyl esters production as an energy source
PublicationRapeseed pellet – crushed seed residue from oil extraction is a by-product of fatty acid methyl esters production process. As other types of biomass, it can either be burned directly in furnaces or processed to increase its energetic value. Biomass is renewable, abundant and has domestic usage; the sources of biomass can help the world reduce its dependence on petroleum products, fossil coal and natural gas. Energetically effective...
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Practical Trial for Low-Energy Effective Jamming on Private Networks With 5G-NR and NB-IoT Radio Interfaces
PublicationFourth-generation (4G) mobile networks are successively replaced by fifth-generation (5G) ones, based on the new releases of the 3rd Generation Partnership Project (3GPP) standard. 5G generation is dedicated to civilian users and the conducted analytical work shows that it has numerous technological gaps that prevent its direct implementation in military communications systems. However, the recent armed world conflicts showed that...
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Materials for Mediator-free Electron Transfer in the Enzymatic Electrodes of Biobatteries and Biofuel Cells
PublicationWe present functionalization of single-walled carbon nanotubes (SWCNTs) and their application in the enzymatic fuel cells construction. SWCNTs were covalently modified with different types of aromatic moieties. Free radical reaction was employed to create direct carbon-carbon bond between moiety and SWCNTs. In second approach functionalization takes place through amide bonding. Functionalized SWCNTs were characterized by spectroscopy...
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Influence of rotating magnetic field on gas-liquid volumetric mass transfer coefficient
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Gas to liquid mass transfer in mixing system with application of rotating magnetic field
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Design Considerations of GaN Transistor Based Capacitive Wireless Power Transfer System
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Turbulence model evaluation for numerical modelling of turbulent flow and heat transfer of nanofluids
PublicationIn this work, Nusselt number and friction factor are calculated numerically for turbulent pipe flow (Reynolds number between 6000 and 12000) with constant heat flux boundary condition using nanofluids. The nanofluid is modelled with the single-phase approach and the simulation results are compared with experimental data. Ethylene glycol and water, 60:40 EG/W mass ratio, as base fluid and SiO2 nanoparticles are used as nanofluid...
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The Oxygen Transfer Capacity of Submerged Plant Elodea densa in Wastewater Constructed Wetlands
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Online Pest Warning System—Support for Agriculture and Transfer from Science to Practice
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Mass transfer of HCl and H2O across the hydrophobic membrane during membrane distillation
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Turbulent heat transfer in thin liquid films at low and high heat fluxes
PublicationW pracy przedstawiono rozważania turbulentnej wymiany ciepła w cienkich filmach cieczowych powstałych w wyniku uderzenia strugi przy małych i dużych strumieniach ciepła. W ostatnim przypadku może dojść do wrzenia filmu cieczowego. Oba zjawiska zamodelowano i uzyskano odpowiednie rozkłady temperatury i pedkosci.
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Heat transfer enhancement, flow visualization and friction characteristics in rib-roughened channels
PublicationW pracy przedstawiono wyniki badań eksperymentalnych związanych z intensyfikacją wymiany ciepła w kanałach wyposażonych w żebra, które poprawiają warunki przejmowania ciepła od ścianki do przepływającego medium. W badaniach wykorzystano system PIV oraz termografię ciekłokrystaliczną.
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Interfacial Charge Transfer Complexes in TiO2-Enediol Hybrids Synthesized by Sol–Gel
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Silicon polypodands: a new class of efficient solid–liquid phase-transfer catalysts
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Application of a new class B-podands in solid–liquid phase transfer catalysis
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A new type of B-podand catalysts for solid–liquid phase transfer reactions
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The Effects of Cross-Link Density and Chemical Exchange on Magnetization Transfer in Polyacrylamide Gels
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Influence of pressure on heat transfer during pool boiling on smooth tube bundle
PublicationPrzedstawiono wyniki badań eksperymentalnych wrzenia wody, metanolu i R141b na pęu rur głądkich w warunkach podcisnienia i ciśnienia atmosferycznego
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Experimental study of flow pattern and heat transfer during steam drying of wood
PublicationBadania wysokotemperaturowego suszenia drewna zostały zainspirowane koniecznością instensyfikacji wymiany ciepła i masy na potrzeby przemysłu drzewnego, a w szczególności meblarskiego, w zakresie doskonalenia metod suszenia drewna, modelowania intensyfikacji wymiany ciepła i masy w elementach suszonych, opracowania ekologicznych i energooszczędnych systemów suszarniczych, ochrony środowiska związanej z racjonalnym zużyciem energii,...
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Experimental Investigation of an Intensified Heat Transfer Adsorption Bed (IHTAB) Reactor Prototype
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Flow visualization and heat transfer investigations on the flat plate with streamwise pressure gradient
PublicationPaper presents experimental investigations results for film cooling on a flat plate. The main objective of the design is the streamwise pressure distribution on the flat plate as in the blade cascade. The transient and steady-state technique with liquid crystals for the surface temperature distribution with film cooling has been used in experiments in a low speed wind tunnel.
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Prediction of flow boiling heat transfer data for R134a, R600a and R290 in minichannels
PublicationIn the paper presented is the analysis of the results of calculations using a model to predict flow boiling of refrigerants such as R134a, R600a and R290. The latter two fluids were not used in development of model semiempirical correction. For that reason the model was verified with present experimental data. The experimental research was conducted for a full range of quality variation and a relatively wide range of mass velocity....
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The effect of plate size on the natural convective heat transfer intensity of horizontal surfaces
PublicationW pracy przedstawiono badania wpływu rozmiarów płyty prostokątnej poziomej na intensywność wymiany ciepła w warunkach konwekcji swobodnej. Zaproponowano dwa zakresy: dla płyt o wymiarze charakterystycznym mniejszym niż 0,1 m - 0,2 m intensywność konwekcyjnej wymiany ciepła jest odwrotnie proporcjonalna do szerokości płyty, dla płyt szerszych niż 0,2 m szerokość płyty nie wpływa znacząco na współczynnik konwekcyjnej wymiany ciepła....
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Influence of porous coating on heat transfer during R22 and R134a flow boiling.
PublicationPrzedstawiono wpływ powłoki porowatej na przenoszenie ciepła i spadku ciśnienia podczas wrzenia w przepływie czynników chłodniczych, R22 i R134a.
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Theoretical and experimental research of heat and mass transfer in adsorption process in dac systems
PublicationPrzedstawiono badania wymiany ciepła i masy w stałych adsorpcyjnych elementach wykonanych na bazie silikażelu. Zaprezentowano również informacje dotyczące osuszania w systemach klimatyzacyjnych. Na zkończenie pokazano wyniki numerycznej symulacji i skojarzonej wymiany ciepła i masy w chłodzonym osuszaczu.
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Influence of ci rcuit parameters on the procces of current transfer in thehybrid circuit breaker.
PublicationW artykule przedstawiono działanie hybrydowego bezstykowego ogranicznika prądów zwarciowych w oparciu o symulację komputerową oraz porównanie eksperymentu z symulacją komputerową przy pomocy programu MATLAB i PSPICE. Przedstawiono również wady i zalety obliczeń numerycznych przeprowadzonych z zastosowaniem komercyjnych programów na analizę działania łącznika hybrydowego.W analizie uwzględniono model hybrydowego ogranicznika...
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Electroabsorption study of metal-to-ligand charge transfer in an organic complex of iridium (III).
PublicationW pracy zmierzono i zinterpretowano widmo elektroabsorpcji (EA) próżniowo naparowanych warstw organicznego kompleksu Ir(ppy)3, powszechnie stosowanego jako emiter fosforescencyjny w organicznych diodach elektroluminescencyjnych. Analiza widma EA potwierdziła fakt,że niskoenergetyczne stany elektronowe tego kompleksu związane są z przeniesieniem ładunku metal-ligand.
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Bridge of Knowledge: an Internet platform for R2R and R2B transfer of knowledge and promotion of cooperation
PublicationCurrently, the European Commission puts emphasis on supporting collaboration between universities and business. There are many possible ways to create a strong relationship between both these parties. Positive results of such cooperation lead to increased competitiveness of the global market and, in consequence, bring significant growth of innovation. The cooperation between research-to-research (R2R) and research-to-business (R2B)...
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Letters in High Energy Physics
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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Economics of Energy & Environmental Policy
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International Journal of Energy and Statistics
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Environmental Progress & Sustainable Energy
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Energy Education Science and Technology
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Journal of Energy and Power Engineering
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Energy Research & Social Science
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Advances in Building Energy Research
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Advances in High Energy Physics
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Journal of High Energy Astrophysics
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International Journal of Ambient Energy
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International Journal of Sustainable Energy
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IEEE Transactions on Sustainable Energy
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BIOINFO Renewable & Sustainable Energy
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Journal of Mechanical and Energy Engineering
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International Journal of Marine Energy
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IEEE Power & Energy Magazine
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