Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 1149-1168 av 4210
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Effect of the Availability of the Source of Nitrogen and Phosphorus in the Bio-Oxidation of H2S by Sulfolobus metallicus
(Peer reviewed; Journal article, 2023)The effect of nitrogen and phosphorus availability on the growth of Sulfolobus metallicus was analyzed. This archaeon was subjected to a series of nitrogen and phosphorus limitation conditions to determine their effects ... -
Effect of the turbulent flow field on NOx formation in a hydrogen flame
(Master thesis, 2023)Gitt den økende hastigheten på klimaendringene, har behovet for å erstatte tradisjonelle fossile brensler aldri vært viktigere. Gassturbiner, som hovedsakelig bruker metan som brennstoff, bidrar betydelig til karbonutslippene ... -
The effect of thermal radiation on singularities in the dark universe
(Peer reviewed; Journal article, 2021)Cosmological models with an inhomogeneous viscous dark fluid, coupled with dark matter in the Friedmann–Robertson–Walker (FRW) flat universe, are considered. The influence of thermal effects caused by Hawking radiation on ... -
Effect of torrefaction on physiochemical characteristics and grindability of stem wood, stump and bark
(Journal article; Peer reviewed, 2017)In this work, Norway spruce stem wood, stump and bark were torrefied in a bench scale tubular reactor at 225, 275 and 300 °C with two residence times (30 and 60 min). Effect of torrefaction on general properties, chemical ... -
Effect of Turbulence on Collisional Growth of Cloud Droplets
(Journal article; Peer reviewed, 2018)Weinvestigate the effect of turbulence on the collisional growth of micrometer-sized droplets through highresolution numerical simulations with well-resolved Kolmogorov scales, assuming a collision and coalescence efficiency ... -
The effect of turbulence on mass transfer in solid fuel combustion: RANS model
(Peer reviewed; Journal article, 2021)In this paper, a kinetic-diffusion surface combustion model is examined. The model is modified such that two effects of turbulence are included: 1) enhancement of the mass transfer due to relative velocity between particles ... -
The effect of turbulence on the conversion of coal under blast furnace raceway conditions
(Peer reviewed; Journal article, 2022)dynamics (CFD) can be used to analyze the process virtually and thus improve its performance. Different reducing agents can be used to (partially) substitute the coke and consequently reduce overall emissions. To analyze ... -
Effect of Wind Shear and Turbulence on Wind Turbine Power Production, Based on LIDAR Measurements
(Bachelor thesis, 2020)Denne bacheloroppgaven undersøker kraftproduksjonen til en multi-megawatt vindturbin som et utstyrt med en LIDAR. LIDAR målinger har blitt brukt til å estimere skjærvind og turbulens intensitet, for å komplementere turbin ... -
Effect of Yaw and Wake in Power Production at Skomakerfjellet Wind Park
(Bachelor thesis, 2021)Utvinning av energi fra vinden er i teorien en enkel oppgave. Vind er imidlertid en kompleks naturkraft. TrønderEnergi kontrollerer en vindpark bestående av fire vindturbiner på Skomakerfjellet i Trøndelag. Turbinområdet ... -
Effect on Doppler Resonance From a Near-Surface Shear Layer
(Chapter, 2017)For waves generated by a wave source which is simultaneously moving and oscillating at a constant frequency ω, a resonance is well known to occur at a particular value τres of the nondimensional frequency τ = ωV/g (V: ... -
Effective Concepts for Supplying Energy to a Large Offshore Oil and Gas Area under Different Future Scenarios
(Journal article; Peer reviewed, 2017)Different possibilities were assessed to supply energy to a large offshore oil and gas area in the North Sea. The concepts studied involved: (i) onsite power generation by means of simple gas turbine cycles, (ii) full ... -
Effective polarisability models
(Journal article; Peer reviewed, 2017)Theories for the effective polarizability of a small particle in a medium are presented using different levels of approximation: we consider the virtual cavity, real cavity, and the hard-sphere models as well as a continuous ... -
Effective ventilation solutions preventing sickbuilding syndrome in Norwegian schools
(Master thesis, 2019)Skolebarn bruker en betydelig del av sin tid (20\%) i skolebygget. Dårlig inneklima i skolebygningene kan påvirke barns utvikling, helse og akademiske prestasjoner. Det er mange gamle skolebygninger i Norge i dag som er ... -
Effectiveness of protected areas edges on vegetation greenness, cover and productivity on the Tibetan Plateau, China
(Journal article; Peer reviewed, 2022)Protected areas (PAs) are the cornerstones of global vegetation conservation efforts, but growing evidence showed the limited effectiveness of PAs in some regions. Recent attempts to quantify conservation efficiency were ... -
Effects of car electronics penetration, integration and downsizing on their recycling potentials
(Peer reviewed; Journal article, 2020)Car electronics form an extensive yet untapped source for secondary critical raw materials. To seize their recycling potentials it is imperative to understand how the number and volumes of car electric and electronic (EE) ... -
Effects of Circularity Interventions in the European Plastic Packaging Sector
(Peer reviewed; Journal article, 2023)Low levels of plastics circularity today reflect major challenges for the sector to reduce environmental impacts and a need for wider systemic change. In this work, we investigated the potential for climate and socioeconomic ... -
Effects of CO2-Absorption Control Strategies on the Dynamic Performance of a Supercritical Pulverized-Coal-Fired Power Plant
(Journal article; Peer reviewed, 2017)This work investigates the interactions that occur between a supercritical pulverized-coal-fired power plant and a downstream CO2-absorption process during load changes in the power plant by linking the dynamic models of ... -
Effects of external cooling on smoldering fire in wood pellets
(Master thesis, 2021)Ulmebrann er en saktegående eksoterm reaksjon, der brensel og oksygen er konsumert for å produsere varme. Det som skiller ulmebrann fra andre forbrenningsformer, er at den brenner uten en synlig flamme. Ulmebranner er også ... -
Effects of Low Concentration in Aqueous Solutions within the Fractal Approach
(Peer reviewed; Journal article, 2022)The concept of the fractal approach is discussed in relation to the description of some properties of dilute aqueous solutions and suspensions of low concentrations. The role of weakly interacting objects in the form of ... -
The Effects of Power Ultrasound (24 kHz) on the Electrochemical Reduction of CO2 on Polycrystalline Copper Electrodes
(Peer reviewed; Journal article, 2021)The electrochemical CO2 reduction reaction (CO2RR) on polycrystalline copper (Cu) electrode was performed in a CO2-saturated 0.10 M Na2CO3 aqueous solution at 278 K in the absence and presence of low-frequency high-power ...