Blar i Institutt for prosess-, energi- og miljøteknologi på utgivelsesdato
Viser treff 121-140 av 333
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Using Image Processing for Flame Diagnostics
(Journal article; Peer reviewed, 2017)An image processing routine was developed to determine the flame height of a hydrogen jet flame. Two different techniques was tested, where one where based on Wiens distribution of a black body and one based on intensity ... -
CO2 Absorption Efficiency and Heat Consumption Measured at High Gas to Liquid Ratios in Laboratory Rig
(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 ... -
Effects of N/S Molar Ratio on Product Formation in Psychrophilic Autotrophic Removal of Sulfide
(Journal article; Peer reviewed, 2017) -
Comparison of the influence of drag models in CFD simulation of particle mixing and segregation in a rotating cylinder
(Journal article; Peer reviewed, 2017)CFD modelling was used to simulate particle segregation in a transverse plane of a rotating cylinder under different particle-particle drag models. The Eulerian method was used to model the dense particulate phases in the ... -
Wave Front Tracking using Template Matching and Segmented Regression
(Peer reviewed; Journal article, 2017)An experimental study was designed to measure shock waves (supersonic gas flow) in a shock tube. A high-speed camera captured images of the shock waves, at a framerate up to 500,000 frames per second. with respect to the ... -
Evaluation of drag models for CFD simulation of fluidized bed biomass gasification
(Journal article; Peer reviewed, 2017)Gasification of biomass into suitable feedstock has become a feasible alternative technology for reducing the use of energy feedstock from fossil sources. Usually, fluidized bed technology is used in the biomass gasification ... -
Substitution of coal by refuse derived fuels (RDF) in the precalciner of a cement kiln system
(Journal article; Peer reviewed, 2017) -
Analyzing the effects of particle density, size, size distribution and shape for minimum fluidization velocity with Eulerian-Lagrangian CFD simulation
(Journal article; Peer reviewed, 2017)Fluidized bed reactor systems are widely used due to excellent heat and mass transfer characteristics followed by uniform temperature distribution throughout the reactor volume. The importance of fluidized beds is further ... -
Validation of results from Barracuda® CFD modelling to predict the minimum fluidization velocity and the pressure drop of Geldart A particles
(Journal article; Peer reviewed, 2017)Fluidization characteristics such as the minimum fluidization velocity and the bed pressure drop are important for the design of an efficient fluidized bed. These characteristics can be measured experimentally, but also ... -
Modeling and simulation of light oil production using inflow control devices
(Journal article; Peer reviewed, 2017)Light crude oil production is the most economical and is currently serving as benchmark together with medium crude oil. The most of the conventional oil fields in the worlds are either light or medium crude oil. Conventional ... -
Computational fluid dynamics study of flow depth in an open Venturi channel for Newtonian fluid
(Journal article; Peer reviewed, 2017)Open Venturi channel flow measurement could be a cheap method to be used in drill bit pressure control. The main objective of this study is to identify the factors related with the flow depth in an open Venturi channel. A ... -
Experimental Study and CFD Modelling of Minimum Fluidization Velocity for Geldart A, B and D Particles
(Journal article; Peer reviewed, 2017)The aim of this study is to determine minimum fluidization velocity of three different particles which represent different Geldart classification groups and to compare the results with computational results. The experiments ... -
The Role of Solvent Polarity on Low-Temperature Methanol Synthesis Catalyzed by Cu Nanoparticles
(Journal article; Peer reviewed, 2017)Methanol syntheses at low temperature in a liquid medium present an opportunity for full syngas conversion per pass. The aim of this work was to study the role of solvents polarity on low-temperature methanol synthesis ... -
Study of Fluidization Regimes using OpenFOAM Computational Fluid Dynamics
(Journal article; Peer reviewed, 2017)The objective of this study was using computational fluid dynamics simulation with OpenFOAM to study the fluidization properties for four types of particles classified as Geldart A, B, C and D. Fluidization regimes were ... -
Simulation of Oil Production from Homogenous North Sea Reservoirs with Inflow Control using OLGA/Rocx
(Journal article; Peer reviewed, 2017)Advances in drilling technology have made long, horizontal wells the preferred method to extract oil from reservoirs in the Norwegian Sector. Early water or gas breakthrough is a passive inflow control devices (ICD) are ... -
Raman Spectroscopy as an Online Monitoring Tool for CO2 Capture Process: Demonstration Using a Laboratory Rig
(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 ... -
Surface tension of alkanolamine solutions: an experimentally based review
(Journal article; Peer reviewed, 2017) -
CFD Study of Particle Flow Patterns in a Rotating Cylinder Applying OpenFOAM and Fluent
(Journal article; Peer reviewed, 2017)A rotating cylinder (RC) is a common type of reactor used in the industry, the most typical example being a cement kiln. The particle flow pattern inside such a unit is necessary for the mass and energy transfer, and this ... -
Anaerobic digestion of pig manure supernatant at high ammonia concentrations characterized by high abundances of Methanosaeta and non-euryarchaeotal archaea
(Journal article; Peer reviewed, 2017)We examined the effect of ammonium and temperature on methane production in high rate upflow anaerobic sludge bed reactors treating pig manure supernatant. We operated four reactors at two ammonium concentrations (‘low’ ... -
Model uncertainty of interfacial area and mass transfer coefficients in absorption column packings
(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 ...