Browsing Process, Energy and Automation Engineering by Title
Now showing items 59-75 of 75
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The rapid depressurization and evaporation of liquified carbon dioxide
(Doctoral dissertations at the University College of Southeast Norway;20, Doctoral thesis, 2017-06-22) -
Real-time Optimization and Control for Oil Production under Uncertainty
(Doctoral dissertations at the University of South-Eastern Norway;179, Doctoral thesis, 2024-02-02)The practical use of model-based optimization depends significantly on the accuracy of the model in use. This is because the presence of uncertainty can introduce a mismatch between the model and the real plant, which may ... -
Removal of CO2 from exhaust gas
(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 ... -
Roll-out of model based control with application to paper machines
(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 ... -
Sensor Data Fusion based Modelling of Drilling Fluid Return Flow through Open Channels
(Doctoral dissertations at the University of South-Eastern Norway;10, Doctoral thesis, 2018-09-20)In drilling oil & gas wells, pressure control is essential for several reasons, but pri-marily for safety. The wellbore pressure should be maintained within the pressure window to avoid the kick and fluid loss while drilling. ... -
Simulation and parameter optimization of fluidized-bed and biomass gasification
(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 ... -
State Estimation and Optimal Control of an Industrial Copper Electrowinning
(Doctoral dissertations at the University College of Southeast Norway;6, Doctoral thesis, 2016)This dissertation contains a solution for an industrial large-scale complex control problem. There are several challenges to be faced when handling control problems. One such challenge is to be able to handle the system’s ... -
Statistical estimation of loads from gas explosions
(Doctoral theses at NTNU;1998:23, Doctoral thesis; Peer reviewed, 1998)In the design of structures in the offshore and process industries, the possibility of a gas explosion must always be considered. This is usually incorporated by performing explosion simulations. However, estimations based ... -
A study of premixed combustion of gas vented from failed Li-ion batteries
(Doctoral dissertations at the University of South-Eastern Norway;109, Doctoral thesis, 2021-11-25)As the world moves towards more clean and suitable energy sources such as wind and solar, there is an increasing demand for energy storage systems. Lithium-ion batteries (LIBs) are today the leading electrical energy storage ... -
Syngas Fermentation and Microbial Electrosynthesis Process Integration to Advance Biogas Production
(Doctoral dissertations at the University of South-Eastern Norway;131, Doctoral thesis, 2022-09-09)Norway is implementing several CO2 emissions control measures to become a low-emission society by 2050. As a part of this great vision, it strives to be the first nation to end the sales of fossil-fuelled vehicles by 2025. ... -
Techno-economic analysis of CO2 capture concepts
(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 ... -
The impact of staged combustion on the operation of a precalciner cement kiln
(Doctoral theses at NTNU;1999:89, Doctoral thesis; Peer reviewed, 1999)In this thesis, the impact of staged combustion on the operation of a precalciner cement kiln, is considered. Mathematical modelling and full-scale experiments at the Norcem cement works in Brevik, Norway, is the basis for ... -
Theoretical and Experimental Studies on Combustion of Alternative Fuels in Cement Kilns
(Doctoral thesis, 2002) -
Tomographic Approach to Automatic and Non-Invasive Flow Regime Identification
(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 ... -
Topics in open and closed loop subspace system identification : finite data-based methods
(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 ... -
Transient drilling fluid flow in Venturi channels: comparing 3D and 1D models to experimental data
(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 ... -
Waste as feed to a biomass gasification reactor
(Doctoral dissertations at the University of South-Eastern Norway;202, Doctoral thesis, 2024-06-20)Solid waste management has been a global challenge. With the growing population, an increase in solid waste from households, agriculture, and industries is inevitable. At the same time, rapid industrialization and technological ...