Blar i Institutt for energi og prosessteknikk på tittel
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Trends in national biodiversity footprints of land use
(Peer reviewed; Journal article, 2021)Rising incomes (and associated expenditures) have been shown to be a major driver of environmental problems. Lately, several studies have pointed to a break between the income driver and biodiversity loss on a per-capita ... -
Trends in Urban Building Stock Energy Use - from Large to Small Scale
(Doctoral theses at NTNU;2023:34, Doctoral thesis, 2023)In keeping with the commitment of a low-emissions society, energy efficiency strategies for the Norwegian urban building stocks shall make a significant contribution to reducing energy use and greenhouse gas emissions. ... -
Trykkpulsasjoner i Francisturbin
(Master thesis, 2010)Formålet med denne avhandlingen er å finne mulige teorier på hvorfor turbin 3 ved Kvilldalanlegget i Suldal kommune har erfart sprekkdannelser i den senere tid. Turbinen har en driftshistorie som ikke er god, men det er ... -
Trykkpulsasjoner i Francisturbiner
(Master thesis, 2007)På grunn av den gode reguleringsevnen til norske vannkraftverk blir turbinene i dag kjørt oftere utenfor bestpunkt. Turbinene er opprinnelig designet for å kjøres ved bestpunkt, og kan ta stor skade av å kjøres ved andre ... -
Trykkpulsasjoner i Francisturbiner - sammenligning av modell og prototypmålinger
(Master thesis, 2013)Det er en pågående diskusjon innen vannkraftmiljøet angående hvorvidt trykkpulsasjoner målt i modellturbiner kan skaleres og brukes til å forutse hvor store trykkpulsasjonene blir i prototypturbinen. I senere tid har det ... -
Trykkpulsasjoner inne i et Francis løpehjul
(Master thesis, 2016)I denne masteroppgaven har trykk- og strekklappmålinger vært gjennomført på Francis-99 løpehjulet, ved Vannkraftlaboratoriet på NTNU. Målingene ble gjennomført ved bruk av trykksensorer montert i bosset på løpehjulet, i ... -
Trykkpulsasjonsmålinger på høytrykkskraftverk
(Master thesis, 2008)Denne masteroppgaven er skrevet i forbindelse med et pågående doktorgradsarbeid der det blant annet skal gjøres trykkpulsasjonsmålinger på det eksisterende løpehjulet ved Tokke kraftverk. Hensikten med denne trykkpulsasj ... -
TSUNAGARI: a new interdisciplinary and transdisciplinary study toward conservation and sustainable use of biodiversity and ecosystem services
(Journal article; Peer reviewed, 2018)The expanding economical activities have accelerated losses of biodiversity and ecosystem services, which are especially pronounced in Asia. To find solutions to stop these losses, a group of scientists studying both ... -
Tuning the Casimir-Lifshitz force with gapped metals
(Peer reviewed; Journal article, 2023)The Casimir-Lifshitz interaction, a long-range force that arises between solids and molecules due to quantum fluctuations in electromagnetic fields, has been widely studied in solid-state physics. The degree of polarization ... -
Tuning the extent of porosity and composition of N-doped carbon materials by NaNO3 and its effect on electrochemical activity
(Journal article; Peer reviewed, 2018)A facile one-pot method using NaNO3 as etching agent in a molten salt medium is developed to tune the porous structure and composition of N-doped carbon materials derived from biomass at high temperatures. SEM and TEM ... -
Turbo-compressors for R-718: Experimental evaluation of a two-stage steam compression cycle
(Chapter, 2019)Water (R-718) is a safe and energy-efficient refrigerant. Mechanical vapour recompression (MVR), an open-loop heat pump using R718, can significantly reduce the energy consumption for steam-heated processes like drying, ... -
Turbomachinery design for Rankine cycles in waste heat recovery applications
(Master thesis, 2017)Rankine Cycles are an effective and efficient manner to convert waste thermal energy into power. Numerous fluids can be used in Rankine cycles, including water, hydrocarbons, hydrofluorocarbons, siloxanes, alcohols or even ... -
Turbophoresis in forced inhomogeneous turbulence
(Journal article; Peer reviewed, 2018)We show, by direct numerical simulations, that heavy inertial particles (characterized by Stokes number St) in inhomogeneously forced statistically stationary isothermal turbulent flows cluster at the minima of mean-square ... -
Turbulence measurements with fixed and floating profiling wind lidar
(Doctoral thesis, 2020)Knowledge about turbulence in the wind helps estimate and optimize the profitability of wind turbines. Light detection and ranging (lidar) is a cost-efficient, flexible, and accurate remote sensing technology for measuring ... -
Turbulent channel flow of generalized Newtonian fluids at a low Reynolds number
(Peer reviewed; Journal article, 2021)Several studies concerning the turbulent pipe flow of generalized Newtonian (GN) fluids may be found in the literature, but not for channel flow, although that has been extensively studied for other types of non-Newtonian ... -
Turbulent Couette–Poiseuille flow with zero wall shear
(Journal article, 2017)A particular pressure-driven flow in a plane channel is considered, in which one of the walls moves with a constant speed that makes the mean shear rate and the friction at the moving wall vanish. The Reynolds number ... -
Turbulent shear flows subject to system rotation
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:187, Doctoral thesis, 2009)Turbulent flows in rotating frame-of-reference are of considerable interest in a variety of industrial, geophysical and astrophysical applications. In these flows, the system rotation induces additional body forces, i.e. ... -
Turbulent wake behind a concave curved cylinder
(Journal article; Peer reviewed, 2019)We present a detailed study of the turbulent wake behind a quarter-of-ring curved cylinder at Reynolds number Re = 3900 (based on cylinder diamter and incoming ow velocity), by means of Direct Numerical Simulation (DNS). ... -
Two routes for sonochemical synthesis of platinum nanoparticles with narrow size distribution
(Journal article; Peer reviewed, 2021)A novel sonochemical approach to synthesize platinum (Pt) nanoparticles has been developed to produce smaller, and more monodisperse particles than traditional chemical reduction methods such as the sodium borohydride ... -
Two-fluid CFD model for R744 two-phase ejectors
(Chapter, 2020)This paper presents early results from a novel two-fluid Eulerian-Eulerian multiphase model for R744 two-phase ejectors, which to the authors knowledge has not previously been presented in literature. As opposed to previous ...