Browsing Institutt for energi og prosessteknikk by Title
Now showing items 1149-1168 of 4177
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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 ... -
Effects of scaling laws on the combustion and NOx characteristics of hydrogen burners
(Peer reviewed; Journal article, 2020)This paper proposes a novel bidirectional linkage between a long-term energy system model and an operational power market model. This combined modelling framework provides long-term energy system investment strategies that ... -
Effects of sediment erosion in guide vanes of Francis turbines
(Doctoral theses at NTNU;2016:260, Doctoral thesis, 2016)Erosive wear of turbine components has been a major operational challenge for the runoff-river hydropower plants across the basins of Himalaya in Asia. The hard mineral particles, which are carried by rivers reach the ... -
Effects of shear-thinning rheology on near-wall turbulent structures
(Peer reviewed; Journal article, 2021)Turbulent channel flow simulation of a shear-thinning fluid is considered – see Arosemena et al. (J. Fluid Mech., vol. 908, 2021, p. A43) – and compared with a Newtonian base case to reveal the effects of the shear-dependent ... -
The effects of structural and technical change on China’s ndustrial CO2 emissions pathways under uncertainty
(Peer reviewed; Journal article, 2022)The industrialization process in China has resulted in the fast growth of the country’s energy consumption and CO2 emissions. Examining the effects of industrial structural change on the emissions pathways in the mid-term ... -
Effects of swirl in turbulent pipe flows - computational studies
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:49, Doctoral thesis, 2011)The primary objective of this doctoral thesis was to investigate the effect of swirl in steady turbulent pipe flows. The work has been carried out by a numerical approach, with direct numerical simulations as the method ... -
Effects of thermoacoustic waves on combustion
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:162, Doctoral thesis, 2005)This thesis presents the result of an investigation on the effect of acoustic waves on turbulent flames with particular focus on practical applications such as gas turbine engines. The objective is to study how pressure ... -
Effects of Ultrasonic Frequency, Acoustic Power, and Liquid Height on Radical Production in a Sonochemical Reactor
(Master thesis, 2019)Vannelektrolyse, kombinert med høyintensitets ultralyd, har vist potensial til å forbedre hydrogenproduksjon. Imidlertid er det nødvendig med videre forskning innen sonokjemi for å bestemme hvordan forskjellige parametere ... -
Effects of upstream flow conditions on runner pressure fluctuations
(Journal article; Peer reviewed, 2017)The rotor-stator interaction and the corresponding pressure fluctuations represent one of the sources of pressure and load fluctuations on the rotating parts of rotating machineries. The high-Reynolds flow is subject to ... -
Effects of using ammonia as a primary fuel on engine performance and emissions in an ammonia/biodiesel dual-fuel CI engine
(Peer reviewed; Journal article, 2022)Ammonia is a promising alternative fuel that can replace current fossil fuels. Hydrogen carrier, zero carbon base emissions, liquid unlike hydrogen, and can be produced using renewable resources, making ammonia a future ...