Institutt for prosess-, energi- og miljøteknologi: Recent submissions
Now showing items 141-160 of 338
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Study of agglomeration in fluidized bed gasification of biomass using CPFD simulations
(Journal article; Peer reviewed, 2019)Fluidized beds have been widely applied for the gasification of biomass. However, at high temperatures ash melting and subsequently bed agglomeration may occur. When biomass is used for thermal conversion processes, inorganic ... -
Investigation of the segregation and mixing behavior of biomass in a bubbling fluidized bed reactor using a CPFD model
(Journal article; Peer reviewed, 2019)Segregation of biomass in a gasification reactor is an inevitable problem that can jeopardize the advantages such as uniform temperature control and proper mass circulation, and good solid-gas contacting area of the fluidized ... -
Experimental and computational study on the effect of ash deposition on fluid dynamic behavior in a bubbling fluidized bed gasifier
(Journal article; Peer reviewed, 2019)The effect of ash deposition on fluid dynamic behavior in a fluidized bed gasification reactor has been studied using experimental and computational methods. The experiments were carried out using sand particles as bed ... -
Aspen Plus simulation of biomass gasification for different types of biomass
(Journal article; Peer reviewed, 2019)A steady-state Aspen Plus model was developed for biomass gasification in a fluidized bed reactor. A combination of different Aspen Plus unit operations was used to model the gasification process. The model was used to ... -
Analyzing the Effects of Geometrical and Particle Size Uncertainty in Circulating Fluidized Beds using CPFD Simulation
(Journal article; Peer reviewed, 2019)Computational fluid dynamic modeling and simulation is becoming a useful tool in the detailed analysis of multiphase flow systems. The level of uncertainty is different depending on selected modeling concept and numerical ... -
Simulation of enhanced oil recovery with CO2 injection
(Journal article; Peer reviewed, 2019)One of the goals of the Paris Agreement is to reduce the CO2 emission to the atmosphere. This paper deals with CO2-EOR, which is a good option for utilizing and storing CO2. Four cases were simulated using the commercial ... -
Effect of Superficial Gas Velocity on Bubbling Fluidized Bed Behaviour in a Biomass Gasifier
(Journal article; Peer reviewed, 2019)This study investigates the behaviour of bubbling fluidized beds in biomass gasification processes based on the variation of superficial gas velocity at different temperatures and air flowrates. In the paper, the operating ... -
Firefly optimization and mathematical modeling of a vehicle crash test based on single-mass
(Journal article; Peer reviewed, 2014)In this paper mathematical modeling of a vehicle crash test based on a single-mass is studied. The model under consideration consists of a single-mass coupled with a spring and/or a damper. The parameters for the spring ... -
Applicability of NRTL Model for Prediction of the Viscosity of Alkanolamine + Water Mixtures
(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 ... -
Density and Viscosity Correlations for Aqueous 3-Amino-1-propanol and Monoethanol Amine Mixtures
(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 ... -
Techno-economic study of the CCMS Technology for CO2 capture from ferro-silicon production
(Journal article; Peer reviewed, 2019)Carbon Capture in Molten Salts (CCMS) is a method for capturing CO2 from a variety of flue gases related to power generation and energy intensive industry processes. The chemical principles are similar to those of the ... -
Detection of Candidatus Neoehrlichia mikurensis in Norway up to the northern limit of Ixodes ricinus distribution using a novel real time PCR test targeting the groEL gene
(Journal article; Peer reviewed, 2019)Background Candidatus Neoehrlichia mikurensis is an emerging tick-borne pathogen. It is widely distributed in Ixodes ricinus ticks in Europe, but knowledge of its distribution in Norway, where I. ricinus reaches its ... -
Fusion of Body Sensors’ Data and Video Images in Assistive Technology
(Chapter, 2019)Modern innovations in the design of sensors and the convergence of computing, cognition and communications have led to many new possibilities in incorporating AI-techniques in Assistive Technology (AT) for elderly people. ... -
Analysing the effect of temperature for steam fluidized-bed gasification of biomass with MP-PIC simulation
(Journal article; Peer reviewed, 2018)Gasification in fluidized beds is an outstanding technology in biomass to energy conversion. The multiphase particle-in-cell modelling has reduced the computational time related to CFD simulations of dense gas-solid systems ... -
Simulation and Economic Optimization of Amine-based CO2 Capture using Excess Heat at a Cement Plant
(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 ... -
Process Design of a Novel Low Temperature Methanol Synthesis Process Using an Air-blown Autothermal Reformer
(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 ... -
Experimental Design and Modeling for Propylene Oxide - CO2–Poly (Propylene Carbonate) Solutions
(Journal article; Peer reviewed, 2018)In this research, experimental design was used to formulate the empirical models of viscosity and density of poly(propylene carbonate) (PPC), propylene oxide (PO), and carbon dioxide (CO2) solutions by designing experiments ... -
Comparison of simulation tools to fit and predict performance data of CO2 absorption into monoethanol amine at CO2 Technology Centre Mongstad (TCM)
(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 ... -
Ultrasound intensified CO2 desorption from pressurized loaded monoethanolamine solutions. I. parameters investigation and modelling
(Journal article; Peer reviewed, 2018)CO2 stripping from loaded monoethanolamine (MEA) aqueous solutions intensified by means of ultrasound was investigated in a lab-scale kettle reboiler with both gas and liquid continuous operations. The reboiler operating ... -
Ultrasound intensify CO2 desorption from pressurized loaded monoethanolamine solutions. II. Optimization and cost estimation
(Journal article; Peer reviewed, 2019)Optimization and cost estimation were performed for the use of ultrasound for intensifying CO2 reboiler stripping from lean monoethanolamine (MEA) aqueous solutions at 1.0 barg. This work was based on typical industrial ...