Blar i Publikasjoner fra CRIStin på forfatter "Øi, Lars Erik"
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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 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 ... -
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 ... -
Optimization of gas velocity and pressure drop in CO2 absorption column
Park, Kwangsu; Øi, Lars Erik (Journal article; Peer reviewed, 2017)For a traditional amine-based CO2 capture system, the absorber column accounts for a significant part of the overall capital- and operating cost. One important design factor of absorber columns is the gas velocity through ... -
Process Design of a Novel Low Temperature Methanol Synthesis Process Using an Air-blown Autothermal Reformer
Ahoba-Sam, Christian; Øi, Lars Erik; Jens, Klaus-Joachim (Journal article; Peer reviewed, 2018)Methanol (MeOH) synthesis at low temperature (100 oC) presents an opportunity for full syngas conversion per pass. This presents a cheaper alternative for MeOH synthesis using an air-blown autothermal reformer (ATR) rather ... -
Process Integration of Green Hydrogen: Decarbonization of Chemical Industries
Ostadi, Mohammad; Paso, Kristofer Gunnar; Rodriguez-Fabia, Sandra; Øi, Lars Erik; Manenti, Flavio; Hillestad, Magne (Peer reviewed; Journal article, 2020)Integrated water electrolysis is a core principle of new process configurations for decarbonized heavy industries. Water electrolysis generates H2 and O2 and involves an exchange of thermal energy. In this manuscript, we ... -
Raman Spectroscopy as an Online Monitoring Tool for CO2 Capture Process: Demonstration Using a Laboratory Rig
Jinadasa, Wathsala; Jens, Klaus-Joachim; Øi, Lars Erik; Halstensen, Maths (Journal article; Peer reviewed, 2017)A laboratory CO2 capture rig at USN was used as a demonstration plant to show the feasibility of Raman spectroscopy for online monitoring of speciation in CO2 capture process. The spectroscopy was integrated to lean and ... -
Simulation and Economic Optimization of Amine-based CO2 Capture using Excess Heat at a Cement Plant
Ali, Hassan; Øi, Lars Erik; Eldrup, Nils Henrik (Journal article; Peer reviewed, 2018)In order to remove CO2 from power or process industry, a well-known method is absorption in monoethanolamine (MEA) followed by desorption, and this technology has been in operation for decades. The major challenge is the ... -
Simulation and Economic Optimization of Vapour Recompression Configuration for Partial CO2 capture
Øi, Lars Erik; Sundbø, Erik; Ali, Hassan (Journal article; Peer reviewed, 2017)A standard method for CO2 capture is by absorption in an amine based solvent followed by desorption. Such plants are traditionally designed for removal of 85-90 % CO2 from the exhaust gas as a reasonable trade-off between ...