Institutt for energi og prosessteknikk
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Integration of R744 and R290 Heat Pumps for Two-family Houses
(Master thesis, 2022)Forbruk av varmt tappevann og romoppvarming er store energiposter, og st˚ar for det meste av energien som leveres til boliger i kalde klima. Varmepumpesystemer utnytter energi i omgivelsene for ˚a redusere bruk av elektrisk ... -
Setting the Pace for a Sustainable Energy Transition in Central Africa: The Case of Cameroon
(Peer reviewed; Journal article, 2021)Sustainable energy systems form an indispensable component of sustainable development especially in developing economies. Therefore, understanding the system wide techno-economics of sustainable energy systems becomes ... -
Life Cycle Assessment of Bauxite residue treatment: Case studies for Dry Stacking, Dry Disposal and Mud Farming
(Master thesis, 2022)During the production of alumina (aluminum oxide) at Bayer plant, bauxite residue results in the largest amount of waste produced at the industrial level. Over time, different treatments have been created to reduce the ... -
Energiforsyning for utslippsfri byggeplass
(Master thesis, 2022)Formålet med denne oppgaven er å analysere og dimensjonere energiforsyningen for Skanska-prosjektet Midtbygda sykehjem i Bergen. Byggeplassen i prosjektet skal være utslippsfri og elektrisk, og er derfor ventet å ha et ... -
Temperature measurement in lithium-ion batteries using FBG
(Master thesis, 2022)I takt med at bruksområdene og omfanget av litium-ion batterier øker, er det et økende behov for overvåkning og regulering av batterienes tilstand. Temperatur påvirker batteriets ytelse, sikkerhet og levetid i stor grad ... -
Virkningsgradsmålinger av Peltonturbin med termodynamisk målemetode ved Grunnåi kraftverk
(Master thesis, 2022)Virkningsgraden beskriver en vannkraftturbins tilstand og ytelse, og det er viktig for både eiere og leverandører at denne kan måles så nøyaktig som mulig. Masteroppgaven omhandler virkningsgradsmålinger for Pelton turbiner ... -
Indirect Evaporative- and Desiccant Wheel Cooling for Norwegian Office
(Master thesis, 2022)Globale kjølebehov er i stadig økning og handlinger må derfor gjøres for å sørge for at driftingen av VVS-systemer blir mer klimavennlige og så energieffektive som mulig. Tradisjonelle kjølemaskiner inneholder kjølemidler ... -
Cooling potential assessment for automated window operation algorithms
(Master thesis, 2022)CO2-utslipp og klimaendringer har vært et stadig viktigere tema ettersom global oppvarming allerede har vist observerbare effekter på miljøet. Mer ekstremvær, stigende havnivåer og hyppigere tørker og flom er noen av de ... -
Testing and Modelling of a Wax Control System for Cold Flow Transport of Waxy Oil
(Doctoral theses at NTNU;2022:294, Doctoral thesis, 2022)There are no economical ways to tie back subsea waxy oil fields with distances to shore more than 50 km without treating the fluid on a platform or FPSO. For more considerable distances, solutions like heating could be too ... -
Assessing the feasibility of utilizing IC Technology's storage solution in land-based long-term storage of liquid hydrogen
(Master thesis, 2022)Abstract will be available on 2025-09-30 -
Synthesis of PVA/CeO2 based nanocomposites with tuned refractive index and reduced absorption edge: Structural and optical studies
(Peer reviewed; Journal article, 2021)n the current study, polymer nanocomposites (NCPs) based on poly (vinyl alcohol) (PVA) with altered refractive index and absorption edge were synthesized by means of a solution cast technique. The characterization techniques ... -
The limits of scale for biodiversity characterisation factors
(Master thesis, 2022)The Anthropocene is increasingly affecting all aspects of the world today and it has had and continuous to have catastrophic impacts on biodiversity. Natural ecosystems have suffered a decline of 47% relative to their ... -
Implementation of a turbine governor on the Francis test rig at The Waterpower Laboratory
(Master thesis, 2022)Målet for denne masteroppgaven er å implementere en turbinregulator på Francis-testriggen ved Vannkraftlaboratoriet ved NTNU, så den kan bli driftet som en francisturbin i et ekte kraftverk driftes. For å kunne drifte ... -
Data-driven analysis of electricity use for office buildings: a Norwegian case study
(Peer reviewed; Journal article, 2021)Buildings are major consumers of primary energy and main contributors to carbon emission. To improve energy efficiency, it is essential to understand the characteristics of energy use in buildings. This study uses an in-use ... -
Interface Tracking for 3D Immersed Boundary Method in Biofluid Dynamics
(Master thesis, 2022)Obstruktiv søvnapné er et medisinsk problem forårsaket av kollaps i de øvre luftveiene som begrenser oksygentilførselen under søvn, som fører til økt dødelighet og senket livskvalitet. For øyeblikket finnes det kirurgiske ... -
Can the gamma-ray bursts travelling through the interstellar space be explained without invoking the drastic assumption of Lorentz invariance violation?
(Peer reviewed; Journal article, 2021)Experimental observations indicate that gamma-ray bursts (GRB) and high-energy neutrino bursts may travel at different speeds with a typical delay measured at the order of hours or days. We discuss two potential interpretations ... -
Study of a water-source CO2 heat pump for residential use: experimental discharge pressure control and performance analysis
(Peer reviewed; Journal article, 2021)The heat pumps with the refrigerant of carbon dioxide (CO2), i.e., CO2 heat pumps, have the merits of low price and environmentally friendliness in comparison with those with traditional refrigerants, e.g., hydrochlorofl ... -
Axion electrodynamics and the axionic Casimir effect
(Peer reviewed; Journal article, 2021)A general scheme for axion electrodynamics is given, in which a surrounding medium of constant permittivity and permeability is assumed. Then, as an application, we provide simple numerical estimates for the electromagnetic ... -
Why rogue waves occur atop abrupt depth transitions
(Journal article; Peer reviewed, 2021)Abrupt depth transitions (ADTs) have recently been identified as potential causes of ‘rogue’ ocean waves. When stationary and (close-to-) normally distributed waves travel into shallower water over an ADT, distinct spatially ... -
Investigations on the Sustainable Resource Use of Swiss Timber
(Peer reviewed; Journal article, 2021)In Switzerland, the advantages of timber buildings for the climate are broadly discussed. In the following paper, a comparative sustainability assessment of four building alternatives is presented. Especially the contribution ...
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