Browsing Institutt for energi og prosessteknikk by Title
Now showing items 1129-1148 of 4254
-
Effect factors for marine invasion impacts on biodiversity
(Journal article; Peer reviewed, 2024)Purpose Marine vertebrate populations have halved in the past decades, and invasive species are a major driver for this loss. While many model the spread of invasive species, a model to assess impacts of marine invasions, ... -
Effect of additives in reducing ash sintering and slagging in biomass combustion applications
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:254, Doctoral thesis, 2012)The objective of this study was to investigate sintering and slagging behaviors of biofuels during combustion processes. Biofuels tested are derived from the agricultural sector, wood and furniture industry as well as from ... -
Effect of an Azimuthal Mean Flow On the Structure and Stability of Thermoacoustic Modes in an Annular Combustor Model with Electroacoustic Feedback
(Peer reviewed; Journal article, 2020)Thermoacoustic oscillations in axisymmetric annular combustors are generally coupled by degenerate azimuthal modes, which can be of standing or spinning nature. Symmetry breaking due to the presence of a mean azimuthal ... -
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 Horizontal Shear on Extracting Water Currents From Surface Wave Data
(Journal article; Peer reviewed, 2024)The dispersive motion of surface waves is now routinely used to remotely measure the currents close beneath the surface of oceans and other natural flows. The current manifests as wavelength-dependent Doppler shifts in the ... -
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 ... -
The Effect of Methane–Ammonia and Methane–Hydrogen Blends on Ignition and Light-Around in an Annular Combustor
(Journal article; Peer reviewed, 2023)The use of hydrogen and ammonia in gas turbines, either alone or blended with natural gas, poses various technical challenges for combustion systems, including ignition. Depending on the fuel composition, the laminar flame ...