Institutt for prosess-, energi- og miljøteknologi: Nye registreringer
Viser treff 181-200 av 338
-
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 ... -
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’ ... -
Effect of Tonsillar Herniation on Cyclic CSF Flow Studied with Computational Flow Analysis
(Journal article; Peer reviewed, 2011)BACKGROUND AND PURPOSE: The Chiari I malformation, characterized by tonsils extending below the foramen magnum, has increased CSF velocities compared with those in healthy subjects. Measuring the effect of tonsillar ... -
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 ... -
Substitution of coal by refuse derived fuels (RDF) in the precalciner of a cement kiln system
(Journal article; Peer reviewed, 2017) -
CO2stCap - Cutting Cost of CO2 Capture in Process Industry
(Journal article; Peer reviewed, 2017)This paper is a presentation of the CO2stCap project to be undertaken in the four year project period (2015 – 2019). The project focuses on partial CO2 capture in process industry and how this can be applied to reduce cost. ... -
Algorithm with improved accuracy for real-time measurement of flow rate in open channel systems
(Journal article; Peer reviewed, 2017)Most methods for flow rate measurement in open channels usually have low accuracy over a range of flow rates due to varying fluid properties, flow conditions and channel length. This paper suggests an algorithm to improve ... -
Equilibrium Measurements of the NH3-CO2-H2O System: Speciation Based on Raman Spectroscopy and Multivariate Modeling
(Journal article; Peer reviewed, 2017)Liquid speciation is important for reliable process design and optimization of gas-liquid absorption process. Liquid-phase speciation methods are currently available, although they involve tedious and time-consuming ... -
High rate manure supernatant digestion
(Journal article; Peer reviewed, 2015)The study shows that high rate anaerobic digestion may be an efficient way to obtain sustainable energy recovery from slurries such as pig manure. High process capacity and robustness to 5 % daily load increases are observed ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Open Active Contour Model For Front Tracking Of Detonation Waves
(Journal article; Peer reviewed, 2017)This paper presents an image processing framework for tracking the front of the detonation wave from a sequence of images. The images are captured by high speed camera during a laboratory gas explosion experiment. By ... -
Simulation of burning velocities in gases vented from thermal run-a-way lithium ion batteries
(Journal article; Peer reviewed, 2017)This paper describes the results from simulations of laminar burning velocities in the premixed air and flammable gases vented from abused Li-ion batteries. The released mixture from such batteries contain mixtures of ... -
Detonation propagation in stratified reactant layers
(Journal article; Peer reviewed, 2017)A numerical investigation of detonation propagation in stratified reactant layers is presented in this paper. It is baesed on the reactive Euler equations using a two step chemical kinetics approach. The numerical simulations ... -
Waste heat availability in the raw meal department of a cement plant
(Journal article; Peer reviewed, 2017) -
Performance of MAPA promoted tertiary amine systems for CO2 absorption: Influence of alkyl chain length and hydroxyl groups
(Journal article; Peer reviewed, 2017)Absorption and desorption of CO2 into five aqueous tertiary amine solvents and their blends with MAPA were studied using a screening apparatus. Results showed that MAPA significantly enhanced both CO2 absorption rate and ...