Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 3894-3913 av 4196
-
Transient dynamikk i gasstransport
(Master thesis, 2011)Beregningsmodeller som i dag brukes til prediksjon og overvåkning av gasstransport, er stort sett basert på 1 dimensjonale betraktninger. Friksjonsfaktoren som brukes i disse modellene er gjerne av typen Colebrook-White, ... -
Transient Flow in Gas Transport
(Master thesis, 2011)Transport of natural gas to continental Europe and UK is a large portion ofNorwegian petroleum industry. The gas is mainly transported undersea inlarge-scale transport pipelines. Amount of transported gas is currently ... -
Transient friction in pressurized pipes; the water hammer phenomenon
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:135, Doctoral thesis, 2010)The friction in non-stationary flow is an intriguing and interesting phenomenon. Many types of non-stationary flow exist, and the friction involved in these flows is in many cases significantly different from the steady ... -
Transient heat production and release profiles for wood stoves
(Journal article; Peer reviewed, 2018)Combustion of wood logs in wood stoves and fireplaces occurs through a so-called batch combustion process, i.e. it is a highly transient process where most parameters change during the combustion cycle. This results in ... -
Transient Heat Transfer in Boreholes with Application to Non-Grouted Borehole Heat Exchangers and Closed Loop Engineered Geothermal Systems
(Doctoral thesis at NTNU;2016:76, Doctoral thesis, 2016)This thesis concerns heat transfer processes in single boreholes and systems of boreholes. The thesis is divided in two parts of which the first considers borehole heat exchangers (shallow geothermal energy), and the ... -
Transient LDV-measurements in the draft tube of a high head Francis turbine
(Master thesis, 2014)Francis-99 is a series of upcoming workshops aimed at determining the state of the art of high head Francis turbine simulations. The scope of this essay is to provide empirical data to serve as validation for the CFD ... -
Transient Modelling of Hydropower Plants
(Master thesis, 2016)Any changes of the volume flow through a turbine gives acceleration or deceleration of the masses of water in the penstock. This induces dynamic pressure changes in front of the turbine. A pressure transient must be ... -
Transient performance of combined cycle power plant with absorption based post-combustion CO2 capture: dynamic simulations and pilot plant testing
(Doctoral theses at NTNU;2018:168, Doctoral thesis, 2018)The thesis presents transient performance analysis of chemical absorption processes for reducing CO2 emissions from natural gas combined cycle power plants (NGCCs), which can contribute to reduce greenhouse gas emissions ... -
Transient Thermo-Acoustic Responses of Methane/Hydrogen Flames in a Pressurized Annular Combustor
(Peer reviewed; Journal article, 2022)The present article experimentally investigates the triggering and transient growth of azimuthal instabilities in a pressurized laboratory-scale annular combustor featuring 12 methane/hydrogen flames, as the equivalence ... -
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 ...