Blar i Institutt for energi og prosessteknikk på emneord "Energi-, prosess- og strømningsteknikk"

Viser treff 41-60 av 72

    • Lift-off of methane jet flames in O2/CO2 atmospheres 

      Norheim, Bård Lode (Master thesis, 2009)
      Turbulent jet diffusion flames and flame lift-off have been the topic of a great deal of research due to its complexity in combining both turbulent flow and combustion. The mechanisms controlling flame lift-off however, ...

    • Måling av pumpevirkningsgrad ved hjelp av termodynamisk metode 

      Ljones, Gudrun (Master thesis, 2009)
      Målet med denne oppgaven er å måle pumpevirkningsgrad ved hjelp av termodynamisk metode. Termodynamisk metode måler strømningstapene over en hydraulisk strømningsmaskin. For strømningsmaskiner med løftehøyde over 100 m ...

    • Membrane Based Heat Exchanger 

      Aarnes, Sofie Marie (Master thesis, 2012)
      Reduction of the energy used to acclimatise buildings is a huge challenge simultaneously with the implementation of air tight low energy buildings. In residential buildings with several living units centralised air handling ...

    • Methods for providing heat to electric operated LNG plant 

      Tangås, Cecilie Magrethe (Master thesis, 2010)
      Hammerfest LNG plant, located at Melkøya outside Hammerfest, is supplied with heat and power from an on-site combined heat and power (CHP-) plant. This natural gas fired CHP emits more than one million tons of CO2 per year, ...

    • Modeling of a centrifugal separator for dispersed gas-liquid flows 

      Monsen, Gisle Otto Tviberg (Master thesis, 2012)
      Natural gas is a vital component of the worlds supply of energy. In Norway all the gas can be found offshore where it needs to processed before transport. A vital part of the processing is gas and liquid separation. Current ...

    • Modelling of Rotating Turbulent Flows: Computer simulation of turbulent backward-facing step flow with system rotation 

      Gundersen, Ted Ørjan Kjellevik (Master thesis, 2011)
      An investigation of how different levels of turbulence modelling tackle the effects of system rotation has been performed. Ranging from simple one-equation models to large-eddy simulations, different approaches have been ...

    • Multiple Holdup Solutions and the Effect of Interface Level Gradients 

      Andersen, Even (Master thesis, 2012)
      Simulations on liquid loads and flow rates which the Taitel-Dukler model predicts to have multiple solutions have been performed with ANSYS Fluent and LedaFlow. Both steady state and transient results in one, two and three ...

    • Neddykket sentrifugalpumpe, design av sneglehus 

      Holmefjord, Eirik (Master thesis, 2008)
      SammendragOppgaven omhandler et nytt design av Framo lossepumpe SD 125. Dagens versjon av pumpen ble i prosjektoppgave høst 2007 vurdert med tanke på hydraulisk design. Der ble det og diskutert en alternativ metode for å ...

    • Novel Power Plant Cycles with CO2 Capture at Elevated Pressure 

      Eriksen, Christian (Master thesis, 2011)
      This thesis provides a comprehensive overview of effective process modifications that can be made to the conventional natural gas-fired power cycle in order to reduce the high electrical efficiency penalty caused by CO2 ...

    • Numerical analysis of non-linear oscillations of micrometre size fluid droplets 

      Frøynes, Olav Are (Master thesis, 2014)
      Nonlinear oscillations of free viscous drops are investigated by solving the full Navier-Stokes equation using the finite element software COMSOL Multiphysics. Oscillations are investigated for droplets released form static ...

    • Numerical study of hydrogen adsorption 

      Rasmussen, Inger-Anne (Master thesis, 2012)
      The main objective of this thesis is to describe the transient thermodynamics during physisorption of hydrogen gas using a commercial numerical software.Simulations of thermal effects during adsorption are valuable tools ...

    • Off-design Simulations of Offshore Combined Cycles 

      Flatebø, Øystein (Master thesis, 2012)
      This thesis presents an off-design simulation of offshore combined cycles. Offshore installations have a substantial power demand to facilitate the oil and gas production. To cover this need of power almost all the platforms ...

    • Optimalisering av en 45 bars ammoniakk varmepumpe 

      Korff, Kristian (Master thesis, 2012)
      I løpet av 2005-2006 ble det installert en ny kombinert varmepumpe/kjølemaskin i Kongsberg Teknologipark. Den kombinerte varmepumpen/kjølemaskinen er et totrinns ammoniakkanlegg som har som formål å levere prosesskjøling ...

    • Production, Liquefaction and Transport of Low-Processed Natural Gas 

      Hveding, Haakon Andreas (Master thesis, 2010)
      The pre-processing and liquefaction of LNG is very energy demanding in addition to having a high level of complexity. This motivates for finding alternative value chains and technologies for gas transportation and various ...

    • Release and Spreading of Dense Gases: Turbulence modeling with Kameleon FireEx 

      Bærland, Tarjei (Master thesis, 2011)
      A dense gas released into the atmosphere will have a flow development that can be described by a large range of physical scales and quantities. An instantaneous release will slump towards the ground unaffcted by the wind, ...

    • Sediment erosion in a centrifugal pump 

      Vangdal, Njål (Master thesis, 2011)
      AbstractWith a decrease in orders for their regular standard cargo-pump for chemical tankers, Frank Mohn Fusa started developing a new cargo-pump for the Offshore Supply Vessel market. This meant designing a pump which ...

    • Simulation of expansion driven flow instabilities in long risers 

      Kjeldby, Tor Brox (Master thesis, 2010)
      A series of former small scale experiments on unstable gas lift conducted at the NTNU multiphase laboratory have become subject to numerical simulations with two different multiphase one-dimensional flow simulators. In the ...

    • Simulation Program for Stability Analysis of Hydropower Plants 

      Vogt-Svendsen, Simen Nordre (Master thesis, 2012)
      Over the last few years Norway has seen an increasing number of hours where the grid frequency exceeds the required limits (49.9-50.1Hz). To improve this situation one alternative is to implement hydropower governing with ...

    • Solfangarar for norske lågenergibustadar 

      Hovstad, Kjetil Helge (Master thesis, 2009)
      Moderne, godt isolerte bustadar med ventilasjon og varmegjenvinning, har lågt energibehov til oppvarming. Dette har ført til at behovet for energi til oppvarming av tappevatn er den dominerande energiposten, spesielt i ...

    • Stall og surge i tørr- og våtgasskompressorer 

      Dahl, Ståle (Master thesis, 2011)
      I denne oppgaven beskrives de aerodynamiske ustabilitetene kalt stall og surge. Oppgaven består hovedsakelig av tre deler. I første del gjennomgås noe fundamental teori på aerodynamikken i sentrifugalkompressorer, før ...