Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 3894-3913 av 4186
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Transient wave resistance upon a real shear current
(Journal article; Peer reviewed, 2018)We study the waves and wave-making forces acting on ships travelling on currents which vary as a function of depth. Our concern is realism; we consider a real current profile from the Columbia River, and model ships with ... -
Transiente olje-vann strømningsforsøk
(Master thesis, 2009)Denne masteoppgaven er i all hovedsak rettet mot å ekstrahere eksperimentelle data på olje-vann flushing, begge i væskefase. Det vil også gjøres en evaluering på hvor godt flerfasesimulatoren OLGA 6.0 klarer å reprodusere ... -
Transition between coalescence and bouncing of droplets on a deep liquid pool
(Journal article; Peer reviewed, 2011)This study focused on the bouncing of sub-millimetric droplets (below 0.7 mm) of three different fluids, distilled water, technical ethanol and 1-propanol on a deep liquid pool of the same fluids. Four different flow regimes ... -
Transition to Large Scale Use of Hydrogen and Sustainable Energy Services and nonlinearity: Choices of technology and infrastructure under path dependence, feedback
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:71, Doctoral thesis, 2004)We live in a world of becoming. The future is not given, but forms continuously in dynamic processes where path dependence plays a major role. There are many different possible futures. What we actually end up with is ... -
Transition to the 4th generation district heating-possibilities, bottlenecks, and challenges
(Journal article; Peer reviewed, 2018)The 4th generation district heating (DH) will be available in the coming years. However, the transition from the current 2nd or 3rd generation DH is a challenging task. This article reviewed the technical issues associated ... -
Transitional season solar energy storage using physical sorption materials for low carbon district heating in cold climate - Lagring av solenergi i overgangsperioder ved hjelp av materialer basert på fysisk sorpsjon for lavkarbon fjernvarme i kaldt klima
(Master thesis, 2018)The aim of the work with this thesis has been to acquire enough knowledge about solar energy and thermochemical storage systems to build a mathematical model of a theoretical system located in Beijing, China, and further ... -
Transport Phenomena in Dehydraution of Fish Muscle
(Dr. ingeniøravhandling, 0809-103X; 2003:48, Doctoral thesis, 2003)Dehydration is an ancient method of fish preservation, and comprehensive experience has been gathered from various products and treatments. Several attempts have been made to improve the understanding of the dehydration ... -
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 ...