Nye registreringer

  • Intelligent frequency control for the secure operation of modern power system 

    Acosta Montalvo, Martha Nohemi (Doctoral dissertations at the University of South-Eastern Norway;103, Doctoral thesis, 2021-09-23)
    The modern power system is experiencing several changes to meet the objective to become in a zero CO2 emissions industry. The principal changes are the high penetration of renewable energy sources (RESs) into the power ...
  • The rapid depressurization and evaporation of liquified carbon dioxide 

    Tøsse, Sindre (Doctoral dissertations at the University College of Southeast Norway;20, Doctoral thesis, 2017-06-22)
  • Impact erosion by solid particles in gas-particle flows 

    Ediriweera, Mahesh (Doctoral thesis, 2021-06-18)
    Mass loss of inner wall surface due to particle impact, also referred as erosive wear, is a common challenge encountered in industrial pneumatic conveying systems. Previous studies have shown that erosion is a process ...
  • Methane production from lignocellulosic residues 

    Ghimire, Nirmal (Doctoral dissertations at the University of South-Eastern Norway;93, Doctoral thesis, 2021-05-25)
    Aims: Biochar production by intermediate pyrolysis of renewable lignocellulosic biomass to replace traditional carbon material as a reducing agent and energy source in the metallurgical industries produces carbon rich waste ...
  • Simulation and parameter optimization of fluidized-bed and biomass gasification 

    Bandara, Janitha (Doctoral dissertations at the University of South-Eastern Norway;92, Doctoral thesis, 2021-04-27)
    This thesis gives an insight to experimental studies and computational particle fluid dynamic (CPFD) simulations of fluidized bed and fluidized bed gasification reactors. CPFD models were validated against experimental ...
  • An Image Processing Framework for High Speed Videos from Combustion and Gas Explosion Experiments 

    Maharjan, Samee (Doctoral dissertations at the University of South-Eastern Norway;83, Doctoral thesis, 2020-12-18)
    The method of high speed photography is used to visualize those phenomena which occur so fast that it is impossible to visualize by the normal human eyes. One of those phenomena is a shock wave propagation during gas ...
  • Parameter estimation and analysis for grey-box models of building thermal behavior 

    Brastein, Ole Magnus Hamre (Doctoral dissertations at the University of South-Eastern Norway;77, Doctoral thesis, 2020-10-12)
    Reduction of anthropogenic CO2 emissions is one of the most important scientific endeavours of our time. Space heating of buildings is responsible for a considerable portion of the worlds total energy consumption. The ...
  • Physicochemical data for amine based CO2 capture process 

    Karunarathne, Sumudu S. (Doctoral dissertations at the University of South-Eastern Norway;72, Doctoral thesis, 2020-06-18)
    Amine based post-combustion carbon capture is a highly discussed CO2 removal method from flue gas. Large-scale CO2 capture facilities with effective solvents are required to make a significant impact on reducing CO2 emissions ...
  • Data Driven Models for Estimation of Drilling Fluid Rheological Properties and Flow Rate 

    Jondahl, Morten Hansen (Doctoral dissertations at the University of South-Eastern Norway;65, Doctoral thesis, 2020-05-11)
    Pressure control during well drilling operations includes management of the well pressure above the formation pore pressure and below the formation fracture pressure. If these boundaries are not kept, an influx of formation ...
  • Human Behaviour Modelling for Welfare Technology 

    Sánchez, Veralia Gabriela (Doctoral dissertations at the University of South-Eastern Norway;63, Doctoral thesis, 2020-03-31)
    Elderly populations are increasing in Norway, Scandinavia and other developed countries, in part because people are living longer due to medical advances. This is associated with several societal challenges, including an ...
  • Electrochemical Unit Integration with Biogas Production Processes 

    Nelabhotla, Anirudh Bhanu Teja (Doctoral dissertations at the University of South-Eastern Norway;62, Doctoral thesis, 2020-03-27)
    Power to Gas (PtG) is being viewed as systemic innovation in terms of integrating renewable electricity systems and wastewater treatment systems to provide renewable transport fuel. The highly varied nature of the sun and ...
  • Modeling for Automatic Control and Estimation of Influx and Loss During Drilling Operations 

    Berg, Christian (Doctoral dissertations at the University of South-Eastern Norway;61, Doctoral thesis, 2020-03-20)
    In the modern energy driven world, oil and gas will be important resources, at least in the foreseeable future. Wells with challenging pressure windows are more com-monly drilled, and in recent years the drop in oil prices ...
  • On Process Simulation and Learning Technologies 

    Marcano Canelones, Laura Andreína (Doctoral dissertations at the University of South-Eastern Norway;45, Doctoral thesis, 2019-10-16)
    This thesis provides additional insights into the field of simulator training. Al-though numerous studies have identified how to improve simulator technologies and team training practices, little analytic attention has ...
  • Transient drilling fluid flow in Venturi channels: comparing 3D and 1D models to experimental data 

    Welahettige, Prasanna Kumara Welahetti (Doctoral dissertations at the University of South-Eastern Norway;41, Doctoral thesis, 2019-09-26)
    In well drilling operations, bottom hole pressure control within a narrow pressure margin has a high risk of influx (kick) and outflux (loss) at greater depths. Kick occurs when the formation pressure is higher than ...
  • Models and Estimators for Flow of Topside Drilling Fluid 

    Jinasena, Asanthi (Doctoral dissertations at the University of South-Eastern Norway;44, Doctoral thesis, 2019-10-08)
    The reduction of risk and non-productive time in oil drilling is a key research interest in the oil and gas industry. The early detection of kick and loss is a crucial part in safe well control operations, thus, it plays ...
  • Techno-economic analysis of CO2 capture concepts 

    Ali, Hassan (Doctoral dissertations at the University of South-Eastern Norway;42, Doctoral thesis, 2019-10-03)
    The estimates of post combustion CO2 capture costs reported in the literature ranges typically from 50 €/tCO2 to 130 €/tCO2, reflecting differences in the cost estimation methods used, scopes of the analyses, and assumptions ...
  • Bubbling Fluidized Bed Behaviour for Biomass Gasification 

    Agu, Cornelius Emeka (Doctoral dissertations at the University of South-Eastern Norway;35, Doctoral thesis, 2019-06-21)
    The need to cut down the high dependency on the fossil fuels requires sustainable alternative energy resources. Aside that the stock of fossil fuels is depreciable, the energy source also accounts for the major contribution ...
  • Dynamics and model analysis of hydropower systems 

    Vytvytskyi, Liubomyr (Doctoral dissertations at the University of South-Eastern Norway;37, Doctoral thesis, 2019-09-06)
    Globalization and growth in energy consumption in combination with climate challenges, make the use of sustainable energy production a necessity. Important sustainable energy sources (solar, wind) are intermittent in ...
  • Biological hydrogen sulfide removal with nitrate 

    Sposob, Michal (Doctoral dissertations at the University of South-Eastern Norway;11, Doctoral thesis, 2018-09-28)
    Aim: Hydrogen sulfide is a major occupational hazard in agriculture, industry, and sewage processing; its presence leads to corrosion. Thus, hydrogen sulfide removal is obligatory. These investigations aim to evaluate the ...

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