Now showing items 29-48 of 64

    • Low temperature methanol synthesis catalysed by a copper nanoparticle-alkoxide system 

      Ahoba-Sam, Christian (Doctoral dissertations at the University of South-Eastern Norway;6, Doctoral thesis, 2018-06-28)
      Methanol (MeOH) synthesis at low temperature in a liquid medium presents the possibility of achieving full syngas conversion per pass. The Low temperature MeOH synthesis (LTMS) process is advantageous over the current ...
    • Mass transfer characteristics of CO2 absorption into liquid droplets 

      Han, Jingyi (Doctoral dissertations at TUC;2014:1, Doctoral thesis; Peer reviewed, 2014-01-21)
      CO2 capture from exhaust gases has been paid more and more attention in order to avoid global warming. One of the methods for removing CO2 from the flue gas streams is the use of absorption and aqueous alkanolamine solutions ...
    • Mass Transfer Kinetics of Carbon Dioxide into Concentrated Aqueous Solutions of Monoethanolamine 

      Ying, Jiru (Doctoral dissertations at TUC;2013:2, Doctoral thesis; Peer reviewed, 2013-02-15)
      Global warming arguments have gained more and more attention due to the new regulations of carbon dioxide (CO2) emission in the world. Monoethanolamine (MEA) has been employed as an important industrial absorbent for CO2 ...
    • 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 ...
    • 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 ...
    • Modeling, Control and Optimization of a Hydropower Plant 

      Zhou, Wenjing (Doctoral dissertations at the University College of Southeast Norway;33, Doctoral thesis, 2017-12-19)
      Hydropower is a crucial power resource for everyday life in Norway, and a traditional industry that could be improved along with new updated technologies. The PhD work focuses on exploring new solutions, in aspect of ...
    • Modelling and simulations of bubbling fluidized bed and entrained flow biomass gasification reactors 

      Timsina, Ramesh (Doctoral dissertations at the University of South-Eastern Norway;118, Doctoral thesis, 2022-02-24)
      The world needs sustainable energy solutions to replace fossil fuels. Climate change is the defining challenge of our time. New reports from the International Energy Agency (IEA, 2021)1 have developed a roadmap for max ...
    • Modelling of ash melts in gasification of biomass 

      Furuvik, Nora Cecilie Ivarsdatter Skau (Doctoral dissertations at the University of South-Eastern Norway;120, Doctoral thesis, 2022-03-04)
      The need for advanced biofuels produced from sustainable sources is stressed, both on national and international level due to a global agreement to limit the Earth’s global warming. The major goals in the Norwegian agreement ...
    • Modelling of gas explosions 

      Vågsæther, Knut (Doctoral theses at NTNU;2010:221, Doctoral thesis; Peer reviewed, 2010-12-03)
      The content of this thesis is a study of gas explosions in complex geometries and presentation and validation of a method for simulating flame acceleration and deflagration to detonation transition. The thesis includes a ...
    • 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 ...
    • Multivariable process control in high temperature and high pressure environment using non-intrusive multi sensor data fusion 

      Nygaard, Olav Gerhard Haukenes (Doctoral theses at NTNU;2006:38, Doctoral thesis; Peer reviewed, 2006)
      The main objective of this thesis is to use available knowledge about a process and combine this with measurement data from the same process to extract more information about the process. The combination of knowledge and ...
    • Multivariate image regression (MIR) for quantitative predictions : prototype software implementation and selected industrial-technological pilot studies 

      Lied, Thorbjørn Tønnesen (Doctoral theses at NTNU;2000:99, Doctoral thesis; Peer reviewed, 2000)
      In large and important sectors of modern production, there is an increased demand for on-line or at-line information. Both consumers and governmental regulations require that producers can document the quality of their ...
    • 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 ...
    • One-step Conversion of Ethylene to Propylene by a NiSO₄-ReO x/γ-A1₂O₃ Catalyst 

      Li, Lu (Doctoral dissertations at the University College of Southeast Norway;4, Doctoral thesis, 2016-06-22)
      The demand for propylene has dramatically increased due to the discovery of propylene’s derivatives (e.g. polypropylene). The propylene production from the conventional processes (steam cracking process and a refinery fluid ...
    • Optimization of flow behavior in biomass gasification reactor 

      Thapa, Rajan Kumar (Doctoral dissertations at TUC;2015:2, Doctoral thesis, 2015)
      Dual fluidized bed reactor for steam gasification of biomass is a promising technology and can be used in Combined Heat and Power (CHP) production. The producer gas from the reactor can have a calorific value up to 14 ...
    • 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 ...
    • Pneumatic conveying and storage of wet particles to illustrate offshore drill cutting handling 

      Malagalage, Anjana (Doctoral dissertations at the University of South-Eastern Norway;7, Doctoral thesis, 2018-06-29)
      In this thesis, the pneumatic conveying and storage characteristics of particles mixed with a drilling fluid are studied based on the pilot scale experiments. The objective of this research is to investigate the impact of ...
    • Post combustion CO2 capture using aqueous amine solvents: Investigations on molecular structure-activity relationships for amine solvents 

      Arachchige, Gumunu L. Samarakoon (Doctoral dissertations at TUC;2015:3, Doctoral thesis; Peer reviewed, 2015-06-25)
      The study in this dissertation focuses on chemical absorption of CO2 using aqueous amine which is expected to be the technology of choice for early large scale deployment of postcombustion carbon capture (PCC). However ...
    • Process analytical technology for real-time quantitative speciation of aqueous phase CO2 capture solvents 

      Jinadasa, Wathsala (Doctoral dissertations at the University of South-Eastern Norway;31, Doctoral thesis, 2019-04-08)
      Dependency on fossil fuel energy systems is unavoidable until there is a complete shift to alternative energy systems which have no/less impact for global warming. Rapid deployment of carbon capture and sequestration (CCS) ...