Institutt for energi og prosessteknikk
Recent Submissions
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En numerisk studie av vake-fluktuasjons-effekten fra en vindturbin på kraftproduksjonen til Hywind Tampen
(Bachelor thesis, 2019)For å sikre gjennomførbarhet av en betydelig reduksjon i klimagassutslipp i energisektoren, så er det essensielt med ny innovativ teknologi og omfattende kunnskap. Flytende offshore vindteknologi kan være en viktig faktor ... -
Design og økonomisk evaluering av solcelleanlegg ved Lerkendal stadion.
(Bachelor thesis, 2019)Klimaendringer, det grønne skiftet, og solceller p˚a tak er jevnlig samtalevner p˚a nyhetene, i politikken, og blant folk flest. Flere og flere privatpersoner og bedrifter f˚ar montert solcelleanlegg p˚a taket av sine ... -
Optimized industrial cooling of Atlantic salmon
(Master thesis, 2019)Når laks slakter er det nødvendig med rask og effektiv kjøling for å bevare kvaliteten og øke varigheten. Dette kan oppnås med en HeliX-tank, der laks kan både kjøles og renses for blod. Denne masteroppgaven har undersøkt ... -
Condition monitoring of a generator cooling system in a hydropower plant
(Bachelor thesis, 2019)This project thesis has investigated the potential for condition monitoring of a generator cooling system in a hydropower plant, using physical models on data from a SCADA system. The work has been supervised by Voith Hydro ... -
Thermal Gradients and Thermal Conductivity in PEM Fuel Cells, Compared to Li-Ion Batteries and Super Capacitors
(Journal article; Peer reviewed, 2018)The PEMFC has been developed into a very effective energy converter. That is, the PEMFC offers high power at the same energy efficiency range. This is because the cell potential remains constant while current density ... -
Coupling Input‐Output Tables with Macro‐Life Cycle Assessment to Assess Worldwide Impacts of Biofuels Transport Policies
(Journal article; Peer reviewed, 2018)Many countries see biofuels as a replacement to fossil fuels to mitigate climate change. Nevertheless, some concerns remain about the overall benefits of biofuels policies. More comprehensive tools seem required to evaluate ... -
Investigations of Different Control Strategies for Heat Pump Systems in a Residential nZEB in the Nordic Climate
(Chapter, 2017)The paper investigates different control strategies for a ground source heat pump of a Norwegian residential zero emission building, with detailed dynamic simulations (here using IDA ICE). These rule-based controls aim at ... -
Judging the Generalized Newtonian Fluid assumption for cuttings transport modelling by applying time scale comparisons
(Chapter, 2018)Cellulose (PAC) solutions are often employed as drilling fluid model systems in experimental laboratory studies to investigate cuttings transport. For this purpose, PAC solutions are typically assumed to behave purely ... -
A Simplified Power Sizing Method for the Correct Building Integration of Wood Stoves
(Journal article; Peer reviewed, 2019)Wood stoves are widely used in dwellings for space heating, however transient heat output and relatively large heat emission might cause problems with over-heating in new well-insulated buildings. This paper introduces a ... -
Equation of state and force fields for Feynman–Hibbs-corrected Mie fluids. I.Application to pure helium, neon, hydrogen, and deuterium
(Journal article; Peer reviewed, 2019)We present a perturbation theory that combines the use of a third-order Barker–Henderson expansion of the Helmholtz energy with Miepotentials that include first- (Mie-FH1) and second-order (Mie-FH2) Feynman–Hibbs quantum ... -
Influence of thermal zoning and electric radiator control on the energy flexibility potential of Norwegian detached houses
(Journal article; Peer reviewed, 2019)Energy flexibility of buildings can be used to reduce energy use and costs, peak power, CO2eq- emissions or to increase self-consumption of on-site electricity generation. Thermal mass activation proved to have a large ... -
Francis-99: Coupled simulation of the resonance effects in runner channels
(Journal article; Peer reviewed, 2019)A resonance phenomenon is observed experimentally in the runner channels of the Francis-99 model turbine runner. An incompressible CFD simulation is unable to simulate this. Two different coupled physics schemes are therefore ... -
Two-way coupled simulation of the Francis-99 hydrofoil using model order reduction
(Journal article; Peer reviewed, 2019)The Francis-99 hydrofoil is simulated using a quasi two-way Fluid-Structure Interaction procedure. The structural domain is reduced by the use of modal decomposition, and solved for inside the commercial fluid solver ANSYS ... -
A test of the v 2-f k-epsilon turbulence model for the prediction of vortex shedding in the Francis-99 hydrofoil test case
(Journal article; Peer reviewed, 2019)A test of the v 2 − f k − epsilon turbulence model for the flow around the Francis-99 hydrofoil geometry is conducted in order to assess it's accuracy of trailing edge vortex shedding prediction. The model is based on the ... -
A method to extract fishers’ knowledge (FK) to generate evidence for sustainable management of fishing gears
(Journal article; Peer reviewed, 2019)The dangerous effects of Abandoned, Lost or Discarded Fishing Gears (ALDFG) is documented in the literature. However, there exists an overall lack of understanding in quantifying the pollution loads of fishing gears (FG) ... -
Spatial characteristics of a zero-pressure-gradient turbulent boundary layer in the presence of free-stream turbulence
(Journal article; Peer reviewed, 2019)Particle image velocimetry (PIV) measurements are performed to examine the structural organization inside a turbulent boundary layer under the influence of free-stream turbulence (FST). In particular, streamwise-wall-normal ... -
A Highly-Efficient and Stable Catalyst based on Co(OH)2@Ni Electroplated on Cu-Metallized Cotton Textile for Water Splitting
(Journal article; Peer reviewed, 2019)The concept of using renewable energy to power water electrolyzers is seen as a favorable approach for the production of green and sustainable hydrogen. The electrochemical water splitting can be significantly and efficiently ... -
Quantifying biodiversity impacts of hydropower electricity production within the framework of Life Cycle Assessment
(Doctoral theses at NTNU;2019:161, Doctoral thesis, 2019)The United Nations developed 17 Sustainable Development Goals (SDGs) for the transition into a more sustainable world. One of the central aspects of the SDGs is the provisioning of sustainable energy, covered by SDG 7 ... -
Efficient hydrogen production with CO2 capture using gas switching reforming
(Journal article; Peer reviewed, 2019)Hydrogen is a promising carbon-neutral energy carrier for a future decarbonized energy sector. This work presents process simulation studies of the gas switching reforming (GSR) process for hydrogen production with integrated ... -
Skeletal mechanisms for prediction of NOx emission in solid fuel combustion
(Journal article; Peer reviewed, 2019)Emission of nitrogen oxides (NOx) is a major challenge for combustion of solid fuels. Strategies for emission control can be developed from computational fluid dynamics (CFD) simulation. This, furthermore, requires a ...
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