Now showing items 1021-1040 of 1765

    • Modeling Differential Enthalpy of Absorption of CO2 with Piperazine as a Function of Temperature 

      Gupta, Mayuri; Silva, Eirik Falck da; Svendsen, Hallvard Fjøsne (Peer reviewed; Journal article, 2022)
      Temperature-dependent correlations for equilibrium constants (ln K) and heat of absorption (ΔHabs) of different reactions (i.e., deprotonation, double deprotonation, carbamate formation, protonated carbamate formation, ...
    • Modeling Fischer–Tropsch kinetics and product distribution over a cobalt catalyst 

      Pandey, Umesh; Runningen, Anders; Gavrilovic, Ljubisa; Jørgensen, Erik Andreas; Putta, Koteswara Rao; Rout, Kumar Ranjan; Rytter, Erling; Blekkan, Edd Anders; Hillestad, Magne (Peer reviewed; Journal article, 2021)
      A detailed kinetic model describing the consumption of key components and productdistribution in the Fischer–Tropsch synthesis (FTS) over a 20%Co/0.5Re γ-Al2O3commercial catalyst is developed. The developed model incorporates ...
    • Modeling Interfacial Mass Transfer during the Dynamic Evolution of the Drop Size Density Distribution of Emulsions in Turbulent Pipe Flow 

      Lædre, Torstein (Master thesis, 2016)
      Denne oppgaven har fokusert på å modelllere den dynamiske utviklingen av emulsjoners dråpestørrelsesfordeling i turbulent rørstrømning med og uten massebalansen for tensider. Først, ble smaspillet mellom koalesens og ...
    • Modeling of a 1,2-Dichloroethane Cracker 

      Nyeng, Ingrid (Master thesis, 2015)
      Polyvinyl chloride (PVC) is the second most widely used synthetic polymer plastic, where the largest consumption is in the building and construction sector. PVC is mainly produced through the polymerization of the monomer ...
    • Modeling of a Hydrogen Refueling Station 

      Omdahl, Nina Helene (Master thesis, 2014)
      Gaseous hydrogen is one of several alternatives to fossil-based vehicle fuels. In order to establish hydrogen as a good alternative, it is necessary to implement hydrogen refueling stations that can compete with conventional ...
    • Modeling of a Recirculating Aquaculture System 

      Andersskog, Kristin (Master thesis, 2020)
      Abstract will be available on 2023-08-31
    • Modeling of Amine Degradation in a CO2 Absorption Column at Test Centre Mongstad 

      Henriksen, Fridtjof Finsnes (Master thesis, 2012)
      Two different previously conducted oxidative degradation experiments, were used as a basis of modeling monoethanolamine-degradation reactions. Literature and previous experience was used to construct reaction equations for ...
    • Modeling of MEA degradation 

      Brodtkorb, Thea Wilhelmine (Master thesis, 2013)
      Background: Degradation of monoethanolamine (MEA) is a problem in CO2 absorption due to loss of solvent and potential environmental issues associated with the degradation products. The aim of this project was to increase ...
    • Modeling of oxidative MEA degradation 

      Pinto, Diego Di Domenico; Brodtkorb, Thea Wilhelmine; Vevelstad, Solrun Johanne; Knuutila, Hanna; Svendsen, Hallvard Fjøsne (Journal article; Peer reviewed, 2014)
      Considerable amount of work had been recently done researching the degradation of solvents for CO2 post combustion capture, especially for the benchmark solvent MEA. The degradation of the solvent can cause plant corrosion ...
    • Modeling of Reaction Calorimeter 

      Farzad, Reza (Master thesis, 2014)
      The purpose of this project was to model the reaction calorimeter in order to calculate the heat of absorption which is the most important parameter in this work. Reaction calorimeter is an apparatus which is used in ...
    • Modeling of surfactant adsorption on coated quartz crystal surfaces during surfactant flooding process 

      Nourani, Meysam; Tichelkamp, Thomas; Gawel, Bartlomiej; Norrman, Jens; Øye, Gisle (Peer reviewed; Journal article, 2020)
      The focus of this study was the experimental determination of surfactant adsorption during low salinity water injection combined with surfactant flooding (LSW-SF) into an oil reservoir and development of an analytical model ...
    • Modeling the dynamic evolution of drop size density distribution of the oil-water emulsion in turbulent pipe flow 

      Ismail, Ahmad Shamsulizwan Bin (Doctoral theses at NTNU;2021:94, Doctoral thesis, 2021)
      The thesis presents a modelling approach to calculate and fit the evolution of the drop size distributions of oil and water emulsions under turbulent flow in pipes. A simulation model is developed to investigate coalescence ...
    • Modeling the Formation of Degradation Compounds during Thermal Degradation of MEA 

      Braakhuis, Lucas; Høisæter, Karen Karolina; Knuutila, Hanna K (Peer reviewed; Journal article, 2022)
      A kinetic model has been developed to predict thermal degradation of aqueous solutions of monoethanolamine (MEA) in carbon capture. The model focusses on both the degradation rate of the amine and the formation rates of ...
    • Modeling the Growth of Clostridium beijerinckii NCIMB 8052 on Lignocellulosic Sugars 

      Birgen, Cansu; Markussen, Sidsel; Wentzel, Alexander; Preisig, Heinz A.; Wittgens, Bernd (Peer reviewed; Journal article, 2018)
      To our knowledge, this is the first growth model of Clostridium beijerinckii NCIMB 8052 on glucose and xylose as representative lignocellulosic sugars, which considers the synergistic effects of sugars on the growth rate. ...
    • Modeling Thermal Degradation of Monoethanolamine 

      Ida Havnen Ullsfoss (Master thesis, 2021)
      Bakgrunn: Termisk degradering av monoetanolamin (MEA) er et ugunstig aspekt ved aminbasert karbonfangst, da det medfører tap av MEA og redusert absorpsjonskapasitet av CO2. Temperaturen i stripperen justeres for å begrense ...
    • Modeling, estimation and control for optimal operation of separation processes in oil and gas industry 

      Das, Tamal (Doctoral theses at NTNU;2018:234, Doctoral thesis, 2018)
      The primary focus of this thesis is to develop models for oil and gas separation processes. These models form the basis for estimation of unmeasured variables and the control of important process variables. The secondary ...
    • Modellering og modellidentifisering av eit likevektsaminsystem 

      Ekrheim, Hilde Bråtveit (Master thesis, 2013)
      Absorpsjon av karbondioksid ved hjelp av aminer er ein prosess som har stort potensial til å bli brukt på storskala anlegg. Mengde karbondioksid som blir absorbert i aminløysninga er avhengig av gass-væske likevekta. Fokuset ...
    • Modelling a Membrane Contactor for CO2 Capture 

      Gebremariam, Solomon Kahsay (Master thesis, 2017)
      Chemical absorption of CO2 in conventional absorbers is the most mature and preferred technology today for post-combustion CO2 capture. However, two major bottlenecks of this technology are the large solvent regeneration ...
    • Modelling a Multiphase Subsea Separation System 

      Bishop, Torstein Alexander (Master thesis, 2016)
      With the oil and gas industry changing rapidly and new oil-fields becoming less accessible, the demand for new technology and innovative thinking is increasing. With these challenges in mind a possible solution could be ...