Now showing items 21-40 of 48

    • 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 ...
    • Hydrogen leaks in partially confined spaces - dispersion and explosions 

      Sommersel, Ole Kristian (Doctoral dissertations at the University of South-Eastern Norway;31, Doctoral thesis, 2017-12-12)
      In Porsgrunn, Norway, there was an explosion in an ammonia plant in July 1985. The accident was caused by a hydrogen leak inside a factory building, called N1. The result was a severe hydrogen-air explosion and jet fire, ...
    • 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 ...
    • Image-based sizing techniques for fire water droplets 

      Lundberg, Joachim (Doctoral dissertations at TUC;2015:5, Doctoral thesis; Peer reviewed, 2015-11-12)
      The Norwegian petroleum industry has developed a standard for the technical safety of offshore installations (NORSOK S-001, 2008). When dimensioning accidental load with this standard, the deluge or fire water spray may ...
    • Tomographic Approach to Automatic and Non-Invasive Flow Regime Identification 

      Pradeep, Chaminda (Doctoral dissertations at TUC;2015:4, Doctoral thesis; Peer reviewed, 2015-08-28)
      This thesis mainly presents the use of process tomography to study and measure flow parameters in two phase horizontal and near horizontal flows. All static measurements were made using a horizontal separator section while ...
    • 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 ...
    • Experimental Study of Deflagration to Detonation Transition in Hydrogen-Air Mixtures 

      Gaathaug, André Vagner (Doctoral dissertations at TUC;2015:1, Doctoral thesis; Peer reviewed, 2015-04-29)
      Gas explosions in a square channel have been investigated with a main focus on the deflagration to detonation transition (DDT). The gas mixtures were hydrogen and air at different concentrations. This work have been motivated ...
    • Anaerobic degradation of industrial carbon capture reclaimer MEA waste 

      Wang, Shuai (Doctoral dissertations at TUC;2014:5, Doctoral thesis; Peer reviewed, 2014-04-04)
      Global warming and its impacts are serious and challenging international problems (Vitousek, 1994). Increasing fossil fuel consumption results in rising atmospheric greenhouse gas levels which enhances global warming ...
    • 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 ...
    • Production of polysilicon from silane pyrolysis in a fluidized bed 

      Filtvedt, Werner O. (Doctoral dissertations at TUC;2013:3, Doctoral thesis; Peer reviewed, 2013-06-07)
      The photovoltaic industry has experienced a tremendous growth over the last years. The backbone of the technology has so far been elemental silicon. Silicon is the second most abundant element on the earth, but in order ...
    • Degradation of Aqueous 2-Amino-2-methyl-1-propanol for Carbon Dioxide Capture 

      Wang, Tielin (Doctoral dissertations at TUC;2013:1, Doctoral thesis; Peer reviewed, 2013-01-29)
      Absorption-stripping with aqueous 2-amino-2-methyl-1-propanol (AMP), and especially AMP blends with other amines, such as monoethanolamine (MEA) and piperazine (PZ), presents an attractive option for carbon dioxide (CO2) ...
    • 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 ...
    • Empirical modeling, state estimation, and process control with real-life applications to the Czochralski crystallization process 

      Komperød, Magnus ((Doctoral dissertations at TUC;2012:1, Doctoral thesis; Peer reviewed, 2012-05-24)
      This PhD thesis presents research work within the field of systems and control engineering, with emphasis on applications to real-life processes, the Czochralski (CZ) crystallization process in particular. During the PhD ...
    • Removal of CO2 from exhaust gas 

      Øi, Lars Erik (Doctoral dissertations at TUC;2012:2, Doctoral thesis; Peer reviewed, 2012-05-30)
      Removal of CO2 from exhaust gas (CO2 capture) has become a very important topic the last years. There is international agreement to limit the emissions of greenhouse gases to reduce the global warming problem, and CO2 is ...
    • An Experimental and Theoretical Study of Dense Fluidized Bed Fluid Dynamics 

      Rautenbach, Christo (Doctoral dissertations at TUC;2012:3, Doctoral thesis; Peer reviewed, 2012-05-31)
      The papers presented in the present study aim to elucidate the complex fluid dynamic phenomena in a cold dense phase fluidized bed reactor. Theoretical and experimental studies were conducted with this aim and several ...
    • 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 ...
    • Roll-out of model based control with application to paper machines 

      Hauge, Tor Anders (Doctoral theses at NTNU;2003:31, Doctoral thesis; Peer reviewed, 2003)
      A mechanistic nonlinear model of the wet end of paper machine 6 (PM6) at Norske Skog Saugbrugs, Norway has been developed, and used in an MPC application. The MPC provides reduced variability in many key variables, and ...
    • Topics in open and closed loop subspace system identification : finite data-based methods 

      Nilsen, Geir Werner (Doctoral theses at NTNU;2005:228, Doctoral thesis; Peer reviewed, 2006)
      When subspace identification methods for finite closed loop data sets are presented they are often compared to poor subspace identification methods. The methods presented in this thesis are always compared to the results ...
    • 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 ...
    • Degradation of polymeric and particulate organic carbon in biofilms 

      Kommedal, Roald (Doctoral theses at NTNU;2003:101, Doctoral thesis; Peer reviewed, 2003)
      Polymeric and particulate organic carbon (POM) are fundamental compounds in the global cycling of carbon, and constitute significant amounts of BOD in municipal wastewater. The main objective of this work is to study ...