Browsing Institutt for energi og prosessteknikk by Title
Now showing items 1108-1127 of 4147
-
Effect of anion exchange ionomer content on electrode performance in AEM water electrolysis
(Journal article; Peer reviewed, 2020)Anion exchange membrane water electrolysis (AEMWE) has acquired substantial consideration as a cost-effective hydrogen production technology. The anion ionomer content in the catalyst layers during hydrogen and oxygen ... -
Effect of Atmospheric Stability on Meandering and Wake Dynamics
(Master thesis, 2023)Denne studien undersøker effekten av atmosfærisk stabilitet på strømningsdynamikken bak vindturbiner, med fokus på "wake deflection" og "wake meandering". Numeriske Large-Eddy simuleringer med en "Actuator Line" modell ... -
Effect of Atmospheric Stability on Meandering and Wake Dynamics
(Master thesis, 2023)Denne studien undersøker effekten av atmosfærisk stabilitet på strømningsdynamikken bak vindturbiner, med fokus på "wake deflection" og "wake meandering". Numeriske Large-Eddy simuleringer med en "Actuator Line" modell ... -
The effect of building attributes on the energy performance at a scale: an inferential analysis
(Peer reviewed; Journal article, 2022)The commitments to mitigate the negative impacts associated with final energy use stipulate the increase of energy efficiency of the built environment. This is the focus of urban energy policies and of built stock energy ... -
Effect of design specifications for off-design operation of low temperature Rankine cycles using zeotropic mixtures and pure working fluids
(Master thesis, 2018)Using organic Rankine cycles to produce power from low temperature heat sources seems like a promising solution to lower our reliance on environmentally damaging energy sources. By introducing this technology to new and ... -
Effect of energy standard on energy and materials use intensity associated with GHG emission from building envelope in U.S. office buildings
(Master thesis, 2021)Studies have shown that the existing building stocks consume about 40% of the energy and resources around the world. They are also responsible for one-third of the total global greenhouse gas (GHG) emissions. Commercial ... -
Effect of excess charge carriers and fluid medium on the magnitude and sign of the Casimir-Lifshitz torque
(Journal article; Peer reviewed, 2019)Last year, we reported a perturbative theory of the Casimir-Lifshitz torque between planar biaxially anisotropic materials in the retarded limit [Thiyam et al., Phys. Rev. Lett. 120, 131601 (2018)], which is applied here ... -
Effect of free stream turbulence on wind turbine performance
(Master thesis, 2013)In this Master Thesis the effect of free stream turbulence has been investigated on a model wind turbine's performance characteristics and the wake development downstream. The experiment took place in the recirculating ... -
Effect of Heat Flux and External System Configuration on Pressure Drop Oscillations in a Horizontal Pipe
(Master thesis, 2015)Heat transfer processes can greatly benefit from the use of the boiling and condensation in two-phase flows. However, the use of two-phase flows may induce instabilities in the heat transfer system, causing control problems ... -
The effect of hydrogen addition on the amplitude and harmonic response of azimuthal instabilities in a pressurized annular combustor
(Peer reviewed; Journal article, 2021)The present work introduces an annular combustion chamber operated at intermediate pressures. The combustor is operated with CH-H blends leading to a variety of azimuthal combustion instabilities. The influence of the ... -
The Effect of Hydrogen Enrichment on the Thermoacoustic Behaviour of Lean Premixed Flames
(Doctoral theses at NTNU;2022:23, Doctoral thesis, 2022)Gas turbines (GT) burning hydrogen can help deliver large-scale zero carbon power generation and facilitate rapid decarbonisation over the short to medium term. They can also play a crucial role in increasing the penetration ... -
The effect of hydrogen enrichment, flame-flame interaction, confinement, and asymmetry on the acoustic response of a model can combustor
(Peer reviewed; Journal article, 2022)To maximise power density practical gas turbine combustion systems have several injectors which can lead to complex interactions between flames. However, our knowledge about the effect of flame-flame interactions on the ... -
The Effect of Hydrogen On Non-linear Flame Saturation
(Peer reviewed; Journal article, 2023)We investigate the effect of hydrogen enrichment on the non-linear response and saturation of premixed methane/hydrogen flames submitted to acoustic forcing. The thermal power is kept fixed to preserve the nozzle velocity ... -
The effect of inlet turbulence on the quiescent core of turbulent channel flow
(Peer reviewed; Journal article, 2022)The impact of inlet turbulence on the structure of turbulent channel flow is investigated using particle image velocimetry. Streamwise–wall-normal plane measurements are performed in a channel, where different turbulence ... -
Effect of marine atmospheric flow under extreme wind-wave conditions on floating PV systems
(Bachelor thesis, 2023)Solenergi har vist seg å være en låvende fornybar energikilde. Flytende solcelle systemer er et godt alternativ til landbaserte solcellesystemer ettersom de krever mindre landområde og har høyere effektivitet på grunn av ... -
Effect of noise and nonlinearities on thermoacoustics of can-annular combustors
(Peer reviewed; Journal article, 2020)Can-annular combustors consist of N distinct cans setup symmetrically around the axis of the gas turbine. Each can is connected to the turbine inlet by means of a transition duct. At the turbine inlet, a small gap between ... -
Effect of power ultrasound and Fenton reagents on the biomethane potential from steam-exploded birchwood
(Journal article; Peer reviewed, 2019)The global demand for non-fossil energy sources is increasing rapidly. As a result, biogas presents a suitable alternative; however, first generation biofuels (e.g., sugar cane) potentially impact food crops globally. ... -
The effect of pressure on lean premixed hydrogen-air flames
(Journal article; Peer reviewed, 2023)The effect of pressure on the propagation of lean premixed hydrogen-air flames is investigated numerically with a hierarchy of canonical configurations including direct numerical simulations of turbulent flames in homogeneous ... -
The Effect of Rectangular Confinement Aspect Ratio On the Flame Transfer Function of a Turbulent Swirling Flame
(Peer reviewed; Journal article, 2022)The flame transfer function (FTF) has been experimentally investigated for a premixed, turbulent and highly swirled flame in rectangular enclosures with varying aspect ratio. A range of equivalence ratios and inlet bulk ... -
The effect of Stefan flow on Nusselt number and drag coefficient of spherical particles in non-isothermal gas flow
(Peer reviewed; Journal article, 2021)A Stefan flow can be generated during a phase change or reactions of a particle immersed in a fluid. This study investigates the effect of Stefan flow on the exchange of momentum (drag coefficient (CD)) and heat transfer ...