Blar i NTNU Open på forfatter "Nydal, Ole Jørgen"

Viser treff 41-60 av 85

    • Fortrengning av gass med en væskestrøm: Småskala forsøk 

      Winnem, Andreas Navjord (Master thesis, 2009)
      Spyling (Flushing) av gass med en væske kolonne er viktig i forbindelse med trykk testing av rørledninger. For å vurdere multifase simulatoren OLGA 6.0 sin evne til å predikere spyling av en rørledning har simuleringer i ...

    • Friction Models for Oscillating Flow in a U-tube 

      Thon, Bjørn Olav (Master thesis, 2014)
      The basic theory of friction in pipe flow was reviewed in the first part of this thesis. Using the results from this review, steady state friction relations were derived for laminar and turbulent pipe flow.Steady state ...

    • Heat Storage for Cooking: A Discussion on Requirements and Concepts 

      Nydal, Ole Jørgen (Peer reviewed; Journal article, 2023)
      Methodologies for direct and indirect solar energy for cooking are discussed. Clean and renewable energy solutions for cooking are, in particular, in demand in the sub-Saharan region where fuel wood is the main source of ...

    • Heat Storage for oil based solar concentrators 

      Herdlevær, Rune (Master thesis, 2012)
      As the world’s energy demand increases, more and more focus is directed towards different solar energy solutions. In many African countries, a great share of the population cook their food with firewood as the energy source. ...

    • Heat Storage for Vapour Based Solar Concentrators 

      Hoff, Catharina (Master thesis, 2012)
      In a world where energy demand, population, and environmental concern are increasing by the day, the use of solar energy and other renewable energy sources becomes ever more important. Most of the African population lives ...

    • Implementation and evaluation of NeqSim as property generator for multiphase flow simulation 

      Bjørtuft, Kjetil Raul (Master thesis, 2014)
      Multiphase flow transport is currently one of the key technologies in the development of future oil and gas fields. However, the complex nature of multiphase flow behaviour poses various challenges, and calculation methods ...

    • Mechanical temperature control of oil based heat storage 

      Sjøgren, Oskar Stadaas; Steen, Alexander Bjåen (Master thesis, 2018)
      A cooking application and a mechanical temperature controller based on the thermal expansion of sunflower oil were constructed and tested. Both components are parts of a solar cooking system, storing energy in an oil-based ...

    • Model for Severe Riser Slugging in Phyton 

      Anwar, Rinaldi (Master thesis, 2020)
      Severe slugging is the condition at which the liquid slugs are formed and violently blow out from the riser. It may lead to an unstable flow rate, causing the fluctuation of the gas production. Thus, it should be avoided ...

    • Modeling of two-phase gas-oil flow in a vertical pipe with viscous oil 

      Høsser, Eirik (Master thesis, 2014)
      Most of the physical models that are used for modeling two phase gas oil flows are derived from experiments with less viscous oil. This paper has studied the applicability of these models in commercial codes for flows with ...

    • 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 ...

    • Novel Low Cost Solar Thermal Energy Concepts for Developing Countries 

      Johnsen, Håkon Jarand Dugstad (Master thesis, 2017)
      Small scale solar thermal energy devices such as solar cookers are promising solutions for remote areas where other energy sources are limited, for instance in developing countries. These devices can be used directly for ...

    • Numerical Simulation of Multiphase Pipelines 

      Andersen, Marte Bøe (Master thesis, 2007)
      The multiphase flow simulators OLGA 5 and LEDA version 1.05 are tested against experimental data and field data. Experimental data on gas-condensate flow in a high pressure flow loop (inclined pipe project), and on air-water ...

    • Numerical Solvers for Transient Two-Phase Flow 

      Du, Xiaoju (Doctoral Theses at NTNU, 1503-8181; 2013:202, Doctoral thesis, 2013)
      Certain numerical methods have been well developed for solving one-dimensional two-phase flow (e.g. gas and liquid) problems in the literatures during the last two decades. Based on the existing methods, the present work ...

    • Oil Based Solar Concentrator with Heat Storage 

      Skahjem, Ragnhild; Duley, Silje Fosseng (Master thesis, 2016)
      A test system for storing solar thermal energy in the form of hot oil is constructed and tested. The motivation for the work is the need for a thermal energy storage which provides heat, from solar concentrators, for food ...

    • Olje-vann separasjon i rør 

      Gjerde, Asbjørn Øye (Master thesis, 2012)
      Transiente motstrøms tyngdekrafts-drevne olje-vann strømningsforsøk ble gjort i en to meter lang lukket plexiglass sylinder. Et enkelt eksperimentelt oppsett baser på visuelle observasjoner ble laget med formål for disse ...

    • Olje-vann separasjon i rør 

      Heggebø, Henrik Eiane (Master thesis, 2012)
      Transiente motstrøms tyngdekrafts-drevne olje-vann strømningsforsøk ble gjort i en to meter lang lukket plexiglass sylinder. Et enkelt eksperimentelt oppsett baser på visuelle observasjoner ble laget med formål for disse ...

    • Optimal Operation of a Solar Powered Thermal Energy Storage System for Cooking 

      Rekdal, Mikal (Master thesis, 2020)
      I denne masteroppgaven ble driften av et varmelagringssystem drevet av overskuddsenergi fra solcelleproduksjon for matlaging modellert og optimalisert. Hovedformålet med oppgaven var å undersøke systemets kapasitet under ...

    • Overskuddseffekt fra sol, vind og vannkraft til varmelager for matlaging 

      Gustafson, Kaja Matheson; Thaule, Sigurd; Kolderup, Marie (Master thesis, 2019)
      Hensikten med dette prosjektet var å teste om olje kan brukes til varmelagring i et kjøkkensystem basert på overskuddsenergi. Dette er en fortsettelse av prosjektoppgaven "Dump loading to high temperature heat storage", ...

    • Photovoltaic Solar Cooker with Heat Storage 

      Fjeldsæter, Oda Kristine Sneen; Stordal, Vilde Svanevik (Master thesis, 2020)
      Mennesker som lever i avsidesliggende områder sør for Sahara i Afrika har generelt ikke tilgang på strøm fra det nasjonale strømnettet. Av den grunn brukes biobrensel som energikilde for matlaging, som leder til dårlig ...

    • Photovoltaic Solar Cooker with Heat Storage 

      Stordal, Vilde Svanevik; Fjeldsæter, Oda Kristine Sneen (Master thesis, 2020)
      Mennesker som lever i avsidesliggende områder sør for Sahara i Afrika har generelt ikke tilgang på strøm fra det nasjonale strømnettet. Av den grunn brukes biobrensel som energikilde for matlaging, som leder til dårlig ...