Browsing Institutt for energi og prosessteknikk by Title
Now showing items 2604-2623 of 4150
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Multiphase Flow with Gas Hydrate Particles
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:49, Doctoral thesis, 2013)“Cold Flow Technology” (CFT) is an alternative solution to deal with gas hydrate formation in subsea flowlines. Transient multiphase flow with gas hydrate particles is an important research area of the CFT, which has not ... -
Multiple Holdup Solutions and the Effect of Interface Level Gradients
(Master thesis, 2012)Simulations on liquid loads and flow rates which the Taitel-Dukler model predicts to have multiple solutions have been performed with ANSYS Fluent and LedaFlow. Both steady state and transient results in one, two and three ... -
Multiple resonances of a moving oscillating surface disturbance on a shear current
(Journal article; Peer reviewed, 2016) -
Multipoint radiation induced ignition of dust explosions: turbulent clustering of particles and increased transparency
(Journal article; Peer reviewed, 2018)Understanding the causes and mechanisms of large explosions, especially dust explosions, is essential for minimising devastating hazards in many industrial processes. It is known that unconfined dust explosions begin as ... -
Multiregional environmental comparison of fossil fuel power generation - Assessment of the contribution of fugitive emissions from conventional and unconventional fossil resources
(Peer reviewed; Journal article, 2015)In this paper we investigate the influence of fugitive methane emissions from coal, natural gas, and shale gas extraction on the greenhouse gas (GHG) impacts of fossil fuel power generation through its life cycle. A ... -
Multiscale modelling of packed bed chemical looping reforming
(Journal article; Peer reviewed, 2017)A comparison of reactive flows on two distinct scales is presented here (i) Particle resolved direct numerical simulation (PR-DNS), and (ii) 1D packed bed model. The PR-DNS geometry is meshed with polyhedral elements both ... -
Multiscale modelling using molecular dynamics and interfacecapturing methods for two-phase flow simulation of droplets covered with surfactants or asphaltenes, and applications to electrocoalescence
(Doctoral thesis at NTNU;2016:174, Doctoral thesis, 2016)THE WORK PRESENTED in this thesis attempts to improve our fundamental understanding of the interfacial properties of water drops in crude-oil. Model fluids consisting of aliphatic oil with surfactants, as well as real ... -
Multiscale thermo-hydraulic modeling of cryogenic heat exchangers
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:2, Doctoral thesis, 2012)The cryogenic industry has experienced a continuous growth in the last decades, partially sustained by the worldwide development of Liquefaction of Natural Gas (LNG) projects. LNG technology provides an economically feasible ... -
Multivariate analysis of heat transfer and pressure drop in finned tube bundles
(Master thesis, 2013)The exhaust gas from gas turbines contains a large amount of heat that can be utilized for process purposes or for further power generation. The heat recovery units on offshore platforms are required to be as compact and ... -
N-doped porous transition metal-based carbon nanosheet networks as multifunctional electrocatalyst for rechargeable zinc-air batteries
(Journal article; Peer reviewed, 2019)The development of cost-effective and highly efficient multi-functional oxygen reduction reaction and oxygen evolution reaction catalysts has attracted much research attention due to their great potential applications in ... -
Nano-engineering PdNi networks by voltammetric dealloying for ethanol oxidation
(Journal article; Peer reviewed, 2018)PdNi particle networks (PdNi NN) are prepared by voltammetric dealloying using catkin-like PdNi nanoparticles as precursor. It is found that voltammetric dealloying plays an important role for the formation of these networks. ... -
Nano-Indentation of Anisotropic Material: Numerical Approaches to Extract Elasticities from Nano-Indentation
(Master thesis, 2013)Division of Biomechanics participates in a project together with Department of Cancer Research and Molecular Medicine, NTNU, on effects of proton pump inhibitor medication on bone quality. This common anti-stomach acid ... -
Nanofiber NiMoO4/g-C3N4 Composite Electrode Materials for Redox Supercapacitor Applications
(Journal article; Peer reviewed, 2020)NiMoO4/g-C3N4 was fabricated by a hydrothermal method and used as an electrode material in a supercapacitor. The samples were characterized by XRD, FTIR, scanning electron microscopy (SEM) and transmission electron microscopy ... -
Nanomechanical testing of in situ hydrogen charged high strength steel
(Master thesis, 2013)The effect of finely dispersed titanium carbides on the nanomechanical behavior of high strength steel in the presence of hydrogen has been investigated. Nano sized pillars have been milled from steel samples using a Focused ... -
Nanotechnology for environmentally sustainable electromobility
(Journal article; Peer reviewed, 2016)Electric vehicles (EVs) powered by lithium-ion batteries (LIBs) or proton exchange membrane hydrogen fuel cells (PEMFCs) offer important potential climate change mitigation effects when combined with clean energy sources. ... -
National Guidance for Plastic Pollution Hotspotting and Shaping Action: developing the pilot for Norway
(Master thesis, 2021)Plastic has been widely used in vast volume all over the world for decades, and the plastic waste has caused many environment problems globally, among which the leakage of plastic into the ocean has been particularly ... -
Native range estimates for red-listed vascular plants
(Peer reviewed; Journal article, 2022)Besides being central for understanding both global biodiversity patterns and associated anthropogenic impacts, species range maps are currently only available for a small subset of global biodiversity. Here, we provide a ... -
Natural gas processing using mixtures of glycols and alcohols for removal of water, heavy hydrocarbons and carbon dioxide
(Master thesis, 2014)Developing new gas fields in cold and harsh environment requires cost effective technology for removal of water, heavy hydrocarbons (HHC) and carbon dioxide. Operating at such low temperatures requires a technology that ... -
Natural heat transfer air-conditioning terminal device and its system configuration for ultra-low energy buildings
(Peer reviewed; Journal article, 2020)In consideration of the lowered heating and cooling load of ultra-low energy buildings, a natural heat transfer air-conditioning terminal device (NHTACTD) is presented by the authors. The terminal device is able to undertake ... -
Natural refrigerant heat pumps for residential buildings
(Journal article, 2021)Joining the forces for a clean energy transition, the partners from EU funded TRI-HP project (https://www.youtube.com/watch?v=DYunHAQ1Nd4) have a holistic approach for providing energy to multi-family residential buildings ...