Institutt for prosess-, energi- og miljøteknologi: Nye registreringer
Viser treff 81-100 av 338
-
Piping Components: An Analysis of the Critical Dimensions
(Peer reviewed; Journal article, 2020)Pipe components such as elbow, tees, and weldolets are produced at various places in the world. Although the component is produced in accordance with standard ASME (American Society of Mechanical Engineers) B16.9, measurements ... -
Computational modeling of fluidized bed behavior with agglomerates
(Journal article; Peer reviewed, 2020)Fluidized bed reactors can be used for biomass gasification. The product from biomass gasification is syngas, which can be used for production of bio oil. The main challenge when using fluidized bed for gasification is ash ... -
Model Based Early Kick/Loss Detection and Attenuation with Topside Sensing in Managed Pressure Drilling
(Peer reviewed; Journal article, 2020)Early kick/loss detection is a crucial part of safe well control, and it plays a major role in the reduction of risk and non-productive time in drilling. In conventional drilling, topside sensing is used for early kick/loss ... -
Improving gas distribution and evaporation in gas cooling tower at Norcem Brevik
(Peer reviewed; Journal article, 2020)In this work, the effect of the geometry of a GCT (Gas Cooling Tower) on the flue gas distribution in a cooling tower in Norcem, Brevik is investigated by using CPFD (Computational Particle Fluid Dynamics) modeling and ... -
Comparison of experimental and computational study of the fluid dynamics in fluidized beds with agglomerates
(Peer reviewed; Journal article, 2020)Particle agglomeration is one of the obstacles for successful application and commercial breakthrough of fluidized bed biomass gasification. The problem is generally associated with molten ash components that interact with ... -
Simulation of entrained flow gasification reactor with Multi Phase Particle in Cell (MP-PIC) approach
(Journal article; Peer reviewed, 2020)An Entrained flow gasification reactor is studied in this work. Entrained flow reactors are best suited for a feed with small particles at large capacity, at high temperatures, pressures and with short residence time. This ... -
Study of agricultural waste gasification in an air-blown bubbling fluidized bed using a CPFD model
(Journal article; Peer reviewed, 2020)Gasification using a fluidized bed is a promising technology to convert agricultural residues into product gases. In this work, the syngas production potential from agricultural waste (grass pellets) is studied using ... -
Computational study of CO2 injection for enhanced oil recovery and storage
(Journal article; Peer reviewed, 2020)Injection of supercritical carbon dioxide (CO2) for enhanced oil recovery (EOR), plays a vital role to minimize the impact of CO2 emissions. CO2-EOR refers to the oil recovery technique where supercritical CO2 is injected ... -
Simulation of a purification plant for pyrolysis gas based on plastic waste
(Peer reviewed; Journal article, 2020)This study focuses on exctracting ethylene and propylene from other componenents in the pyrolysis gas mixture of plastic waste. Selective absorption of ethylene and propylene from the gas mixture by using a silver nitrate ... -
CPFD simulation of enhanced cement raw meal fluidization through mixing with coarse, inert particles
(Journal article, 2020)In the current work, computational particle and fluid dynamics (CPFD) simulations are used to study an electrically heated bubbling fluidized bed (BFB) used as a calciner in a cement manufacturing process, applying a ... -
Simple modelling approach using Modelica for microbial electrosynthesis
(Peer reviewed; Journal article, 2020)This study intends to develop a simple mathematical model that contributes to the integration of Microbial Electrosynthesis (MES) in AD to reduce CO2 to CH4. Open-source modelling language Modelica was used to build the ... -
Anaerobic Digestion of Hemicellulosic Sugars Implemented in ADM1
(Peer reviewed; Journal article, 2020)Lignocellulosic biomass is a sustainable and renewable source for both solids like biochar and biomethane by anaerobic digestion (AD). Hot water extraction (HWE) improves the total utilization of the biomass and produces ... -
Fluidized bed calcination of cement raw meal: Laboratory experiments and CPFD simulations
(Journal article, 2020)The chemical and thermal processes associated with the decarbonation and fuel combustion in the cement kiln process produce a large amount of carbon dioxide (CO2) contributing with around 8 % of the global CO2 emissions. ... -
Laminar burning velocity of the dimethyl carbonate–air mixture formed by the Li-ion electrolyte solvent
(Peer reviewed; Journal article, 2020)If a Li-ion cell fails and the electrolyte leaks out into air, a flammable premixed gas cloud can be formed. The electrolyte combustion energy is 65–70% of the total energy content of the cell. The main objective of this ... -
Off-field Testing of Grid Scenarios at Medium Voltage in Flexible AC Transmission Systems involving Wind Energy
(Chapter, 2020)As a result of the geographical location of north-western Germany, the local grid operator EWE NETZ has a pioneer role with respect to the integration of renewable energy sources in existing AC transmission systems. About ... -
Doctorateness across Higher Education Institutions in Norway
(Journal article; Peer reviewed, 2020)This article investigates doctorateness in Norway by evaluating the juridical regulations for doctoral studies at all PhD-awarding universities and university colleges according to the following categories: admission, ... -
Analysing consequences of infiltration and inflow water (I/I-water) using cost-benefit analyses
(Peer reviewed; Journal article, 2020)The Municipality of Asker (Norway) is at risk of not meeting the water quality targets set by the European Union Water Framework Directive within the stipulated timeframe. While there are multiple factors negatively impacting ... -
Density, viscosity and free energy of activation for viscous flow of monoethanol amine (1) + H2O (2) + CO2 (3) mixtures.
(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 free energy of activation for viscous flow of CO2 loaded 2-amino-2-methyl-1-propanol (AMP), monoethanol amine (MEA) and H2O mixtures
(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 Excess Properties of MDEA + H2O, DMEA + H2O, and DEEA + H2O Mixtures
(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 ...