Browsing Institutt for energi og prosessteknikk by Title
Now showing items 61-80 of 4152
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A Norwegian zero emission neighbourhood (ZEN) definition and a ZEN key performance indicator (KPI) tool
(Journal article; Peer reviewed, 2019)Within the Norwegian Research Centre for Zero Emission Neighbourhoods (ZEN) in smart cities, a definition for achieving zero emission neighbourhoods will be developed and tested against nine pilot areas. The ZEN definition ... -
A Note on the Magnitude of the Feedback Effect in Environmentally Extended Multi-Region Input-Output Tables
(Journal article; Peer reviewed, 2018)Global multiregion input‐output (MRIO) tables have been developed to capture international spillover effects due to demand in one country and production in other countries. International spillovers have been growing and ... -
A Novel Approach to Flow Model Turbulence Validation Using a Long Range Pulsed Lidar
(Master thesis, 2017)Flow models are useful to predict wind conditions for wind energy production purposes. However, as wind power development expands into areas of even more complex terrain and challenging flow conditions, more research is ... -
A novel maximum entropy approach to hybrid monetary-physical supply-chain modelling and its application to biodiversity impacts of palm oil embodied in consumption
(Journal article; Peer reviewed, 2018)The environmental and social consequences of clearing tropical forests for palm oil and soybean monoculture have been analyzed in a number of studies and are widely recognized. Some initiatives and studies have examined ... -
A novel methodology for Rankine cycle analysis with generic heat exchanger models
(Journal article; Peer reviewed, 2019)This study presents a novel approach for Rankine cycle (RC) analysis, introducing a generic counter current heat exchanger (HX) model to enable basic fluid thermal and flow behaviour in HXs to be considered in a cycle ... -
A Numerical Investigation of Turbulent Combustion in Pool Fires using OpenFOAM
(Master thesis, 2022)Brann er en faretype som kan p˚aføre store økonomiske tap og føre til tap av liv. Økt kunnskap rundt nøyaktig modellering av brann er ett av de første stegene for ˚a f˚a en bedre innsikt i dens mekanismer og gir bedre ... -
A numerical study on vortex-induced vibrations and the effect of slurry density variations on fatigue of ocean mining risers
(Journal article; Peer reviewed, 2019)Ocean mining emerges as a way of meeting future demands for valuable minerals. Risers conveying ore from the seabed to the surface must withstand large wave and current loads. In addition, vortex-induced vibrations (VIV) ... -
A Parametric Study of LEM3D Based on Comparison with a Turbulent Lifted Hydrogen Jet Flame in a Vitiated Co-Flow
(Journal article; Peer reviewed, 2019)A novel model, the hybrid RANS-LEM3D model, is applied to a lifted turbulent N 2 diluted hydrogen jet flame in a vitiated co-flow of hot products from lean H 2 /air combustion. In the present modeling approach, mean-flow ... -
A qualitative reliability and operability analysis of an integrated reforming combined cycle plant with CO2 capture
(Journal article, 2009)Most of the current CO2 capture technologies are associated with large energy penalties that reduce their economic viability. Efficiency has therefore become the most important issue when designing and selecting power ... -
A reference pelton turbine - design and efficiency measurements
(Journal article; Peer reviewed, 2014)The Pelton turbine has been subject to a varying degree of research interest since the debut of the technology over a century ago. Despite its age there are gaps in the knowledge concerning the flow mechanisms effecting ... -
A regionalized scenario-based impact assessment of battery raw materials production
(Master thesis, 2023)In order to limit global temperature, rise within the range of 1.5°C to 2°C, the rapid implementation of electric vehicles (EVs) is crucial for decarbonizing the transport sector. However, the increased demand for lithium-ion ... -
A review of the curious case of heat transport in polymer electrolyte fuel cells and the need for more characterisation
(Journal article; Peer reviewed, 2017)As the polymer electrolyte membrane fuel cell (PEMFC) matures performance keeps increasing—mainly in terms of conversion rate rather than efficiency. Increased conversion results in increased heat release. Fuel cell ... -
A Review of the Role of Critical Parameters in the Design and Operation of Biogas Production Plants
(Journal article; Peer reviewed, 2019)Many operating parameters, individually or together, may influence the performance of anaerobic digestion towards biogas or digestate yield and quality maximization. The most preferred method of optimizing an anaerobic ... -
A review on fluid structure interaction in hydraulic turbines: A focus on hydrodynamic damping
(Journal article; Peer reviewed, 2017)Hydraulic turbines include stationary and rotating components. The interaction of the components, mainly between the runner blades and distributor vanes, is critical when the frequency of the rotor-stator interaction (RSI) ... -
A review on recent technological advancements in multi-ejector concept
(Chapter, 2018)As a consequence of the coming into force of the EU F-Gas Regulation 517/2014, enormous technological developments have been experienced on the part of transcritical R744 supermarket refrigeration systems. These have led ... -
A robust method for calculating interface curvature and normal vectors using an extracted local level set
(Journal article, 2014)The level-set method is a popular interface tracking method in two-phase flow simulations. An often-cited reason for using it is that the method naturally handles topological changes in the interface, e.g. merging drops, ... -
A roll wave and slug tracking scheme for gas-liquid pipe flow
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:59, Doctoral thesis, 2010)The main objective of this work is to explore ways of introducing large roll waves as computational objects into a one-dimensional slug tracking scheme for gas-liquid pipe flow. The tracking scheme uses a moving and adaptive ... -
A scanning particle tracking velocimetry technique for high‑Reynolds number turbulent flows
(Journal article; Peer reviewed, 2019)We propose a novel robust 3D particle tracking technique based on a scanning laser setup. The method yields Lagrangian statistics in densely seeded turbulent flows with good spatial and temporal resolution, overcoming some ... -
A scanning particle tracking velocimetry technique for high‑Reynolds number turbulent flows
(Journal article; Peer reviewed, 2019)We propose a novel robust 3D particle tracking technique based on a scanning laser setup. The method yields Lagrangian statistics in densely seeded turbulent flows with good spatial and temporal resolution, overcoming some ...