Browsing USN Open Archive by Author "Øi, Lars Erik"
Now showing items 1-20 of 53
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Applicability of NRTL Model for Prediction of the Viscosity of Alkanolamine + Water Mixtures
Karunarathne, Sumudu S.; Øi, Lars Erik (Journal article; Peer reviewed, 2019)This study discusses the applicability of the non-random two-liquid (NRTL) model to represent viscosity for MEA (monoethanol amine) + H2O and AMP (2-amino-2-methyl-1-propanol) + MEA (monoethanol amine) + H2O mixtures under ... -
Capital cost estimation of CO2 capture plant using Enhanced Detailed Factor (EDF) method: Installation factors and plant construction characteristic factors
Aromada, Solomon Aforkoghene; Eldrup, Nils Henrik; Øi, Lars Erik (Journal article; Peer reviewed, 2021)Capital cost is frequently estimated for new and retrofit carbon capture plants as new concepts for cost reduction emerge. Capital cost during initial cost estimation of chemical plants strongly depends on the installation ... -
CO2 Absorption Efficiency and Heat Consumption Measured at High Gas to Liquid Ratios in Laboratory Rig
Øi, Lars Erik; Hansen, Per Morten; Henriksen, Mathias (Journal article; Peer reviewed, 2017)A laboratory rig for CO2 absorption into amine solvents including desorption has been in operation at University College of Southeast Norway for several years. Measurements of CO2 removal efficiency and heat consumption ... -
Combined calcination and CO2 capture in cement clinker production by use of electrical energy
Tokheim, Lars-André; Mathisen, Anette; Øi, Lars Erik; Jayarathna, Chameera K.; Eldrup, Nils Henrik; Gautestad, Tor (Chapter, 2019)The technical feasibility of electrifying the calcination process in a precalciner cement kiln system was assessed by studying different electrification concepts. Resistance-based heating was selected as it equires no CO2 ... -
Comparison of simulation tools to fit and predict performance data of CO2 absorption into monoethanol amine at CO2 Technology Centre Mongstad (TCM)
Øi, Lars Erik; Sætre, Kai Arne; Hamborg, Espen Steinseth (Journal article; Peer reviewed, 2018)n this work, several sets of experimental data from the amine based CO2 capture process at CO2 Technology Centre Mongstad (TCM) have been compared with simulations of different equilibrium based models and a rate-based ... -
Compression and transport of raw biogas
Hovland, Jon; Øi, Lars Erik (Lecture, 2019) -
Cost and Emissions Reduction in CO2 Capture Plant Dependent on Heat Exchanger Type and Different Process Configurations: Optimum Temperature Approach Analysis
Aromada, Solomon Aforkoghene; Eldrup, Nils Henrik; Øi, Lars Erik (Peer reviewed; Journal article, 2022)The performance of a plate heat exchanger (PHE), in comparison with the conventional shell and tube types, through a trade-off analysis of energy cost and capital cost resulting from different temperature approaches in the ... -
Density and viscosity correlations and thermodynamic properties in post-combustion CO2 capture processes
Bakhtavar, Parham (Master thesis, 2022)Physicochemical properties such as density and viscosity are critical in the design of process equipment in the post combustion amine-based CO2 capture process because they appear in the majority of the mass transfer and ... -
Density and Viscosity Correlations for Aqueous 3-Amino-1-propanol and Monoethanol Amine Mixtures
Karunarathne, Sumudu S.; Øi, Lars Erik (Journal article; Peer reviewed, 2019)Density and viscosity data and relevant correlations are essentially needed to perform mathematical modelling and simulations for the design of process equipment. Correlations that are developed to cover a range of ... -
Density, viscosity and free energy of activation for viscous flow of CO2 loaded 2-amino-2-methyl-1-propanol (AMP), monoethanol amine (MEA) and H2O mixtures
Karunarathne, Sumudu S.; Eimer, Dag-Arne; Øi, Lars Erik (Peer reviewed; Journal article, 2020)This work presents an experimental study of densities and viscosities of aqueous AMP (2-amino-2-methyl-1-propanol) + MEA (monoethanol amine) + H2O solutions with and without CO2. Amine concentrations were at AMP to MEA ... -
Density, viscosity and free energy of activation for viscous flow of monoethanol amine (1) + H2O (2) + CO2 (3) mixtures.
Karunarathne, Sumudu S.; Eimer, Dag-Arne; Øi, Lars Erik (Peer reviewed; Journal article, 2020)Densities and viscosities of aqueous monoethanol amine (MEA) and CO2-loaded aqueous MEA are highly relevant in engineering calculations to perform process design and simulations. Density and viscosity of the aqueous MEA ... -
Density, Viscosity, and Excess Properties of MDEA + H2O, DMEA + H2O, and DEEA + H2O Mixtures
Karunarathne, Sumudu S.; Eimer, Dag-Arne; Øi, Lars Erik (Peer reviewed; Journal article, 2020)This study presents measured density and viscosity of N-methyldiethanolamine (MDEA) + H2O, Dimethylethanolamine (DMEA) + H2O, and Diethylethanolamine (DEEA) + H2O mixtures. The density was measured at amine mass fraction ... -
The Effect of Climate and Orientation on the Energy Performance of a Prefab House in Norway
Ghazi, Amirhossein; Barahmand, Zahir; Øi, Lars Erik (Chapter, 2023)Norway has a wide range of climatic conditions throughout the country. The climate varies from coastal to inland areas. Geographic latitude and longitude, as well as the gulf stream oceanic flow, account for this phenomenon. ... -
Energy and Economic Analysis of Improved Absorption Configurations for CO2 Capture
Aromada, Solomon Aforkoghene; Øi, Lars Erik (Journal article; Peer reviewed, 2017)The shortcoming of amine-based CO2 absorption technology is the large heat demand for desorption and it requires huge capital investment. Thus, it is expedient to comprehensively and critically analyse alternative process ... -
Heat Pump Efficiencies simulated in Aspen HYSYS and Aspen Plus
Øi, Lars Erik; Tirados, Irene Yuste (Journal article; Peer reviewed, 2015-11-25)Heat pump technology provides an efficient and sustainable solution for both heating and cooling. A traditional heat pump can be defined as a mechanical-compression cycle refrigeration system powered by electricity. ... -
Investigation of the performance of a pilot scale CO2 desorption column using CFD simulations
Eikeseth, Kristoffer (Master thesis, 2022)In this thesis a part of the CO2 desorption tower at Technology Centre Mongstad (TCM) is simulated and studied using CFD, it is the continuation of “Investigation of the performance of a pilot scale CO2 desorption column ... -
Investigation of the performance of a pilotscale CO2 desorption column using CFD simulations
Shakeri, Avishan (Master thesis, 2021)Technology Center Mongstad (TCM) is the world’s largest and most flexible test facility for amine based CO2 absorption and desorption. This master thesis is based on an operational problem at TCM where excess liquid loading ... -
Mathematical models for the physicochemical properties of different amine-based solvents in post combustion capture
Larsen, Jeanette (Master thesis, 2021)CO2 emissions caused by human activity is an increasing problem in today’s society. In order to reduce the environmental impact, it is important to be able to design CO2 capture modules from correct physicochemical properties. ... -
Methane Pyrolysis
Baffuor, Priscilla (Master thesis, 2024)Methane pyrolysis is gaining attention as one of the promising technologies for mitigating climate change in the world today. Methane pyrolysis technology is a method for producing clean hydrogen with carbon as a byproduct. ... -
Model uncertainty of interfacial area and mass transfer coefficients in absorption column packings
Karunarathne, Sumudu S.; Eimer, Dag-Arne; Øi, Lars Erik (Journal article; Peer reviewed, 2017)Uncertainty in model input parameters propagates through the model to make model output imprecision. Here, mathematical models used to calculate interfacial area and mass transfer coefficient for both random and structured ...