Browsing Institutt for prosess-, energi- og miljøteknologi by Title
Now showing items 298-317 of 333
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Statistical diagnosis of a gas-solid fluidized bed using Electrical Capacitance Tomography
(Journal article; Peer reviewed, 2012)Fluidization experiments were performed using several particle size distributions of spherical glass particles, ranging from Geldart B to D. An Electrical Capacitance Tomography (ECT) tomograph was utilised in the present ... -
Stepwise Analysis Of Gasification Reactions With Aspen Plus And Cpfd
(Journal article; Peer reviewed, 2017)The energy from biomass can be utilized through the thermochemical conversion processes of pyrolysis and gasification. Biomass such as wood chips is heated in a gasification reactor to produce a synthesis gas containing ... -
Structural response analysis of explosions in hydrogen-air mixtures in tunnel-like geometries
(Peer reviewed; Journal article, 2021)This paper presents a structural response analysis based on the results of experiments involving gas explosions in inhomogeneous hydrogen-air mixtures in a channel. The channel was 3 m long, with a cross-section of 100 mm ... -
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 ... -
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 ... -
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 ... -
Study of fluidized bed regimes using Computational Particle Fluid Dynamics
(Journal article; Peer reviewed, 2018)The fluidization technology has a wide range of applications. In chemical synthesis, fluidized bed is used to enhance heat and mass transfer between the reacting species. More application of this technology can also be ... -
Study of the Thermal Performance of Industrial Alumina Chlorination Reactor Based on CPFD Simulation
(Peer reviewed; Journal article, 2022)As a part of the new sustainable aluminum production process under study, alumina chlorination plays a crucial role. The relevant process is an exothermic reaction in a fluidized bed reactor. The solid alumina reacts with ... -
Substitution of coal by refuse derived fuels (RDF) in the precalciner of a cement kiln system
(Journal article; Peer reviewed, 2017) -
Surface tension of alkanolamine solutions: an experimentally based review
(Journal article; Peer reviewed, 2017) -
Tailoring Cu nanoparticle catalyst for methanol synthesis using the spinning disk reactor
(Journal article; Peer reviewed, 2018)Cu nanoparticles are known to be very active for methanol (MeOH) synthesis at relatively low temperatures, such that smaller particle sizes yield better MeOH productivity. We aimed to control Cu nanoparticle (NP) size and ... -
Techno-Economic and Life Cycle Cost Analysis through the Lens of Uncertainty: A Scoping Review
(Peer reviewed; Journal article, 2022)Researchers have long been interested in developing new economic assessment methods to provide credible information and facilitate the sustainable development of new technologies and products. The techno-economic analysis ... -
Techno-Economic Assessment of Different Heat Exchangers for CO2 Capture
(Peer reviewed; Journal article, 2020)We examined the cost implications of selecting six different types of heat exchangers as the lean/rich heat exchanger in an amine-based CO2 capture process. The difference in total capital cost between different capture ... -
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 ... -
Technoeconomic evaluation of combined rich and lean vapour compression configuration for CO2 capture from a cement plant
(Peer reviewed; Journal article, 2023)A combined rich and lean vapour compression configuration was investigated for CO2 capture from a cement plant. This was to assess its performance in energy consumption, actual CO2 emission reduction, and cost reduction ... -
Temperature control of a pilot anaerobic digestion reactor
(Journal article; Peer reviewed, 2013)Results of analysis and design and implementation of a temperature control system for a practical pilot anaerobic digestion (AD) bioreactor fed with dairy waste are presented. A dynamic model of the reactor temperature is ... -
Temperature Effects in Anaerobic Digestion Modeling
(Conference object; Peer reviewed, 2015-11-25)Temperature effects on kinetic coefficients for the biochemical processes particle disintegration, hydrolysis and substrate uptake reactions were included in the anaerobic digestion model 1 (ADM1). It was evaluated on data ... -
The effect of alternative fuel combustion in the cement kiln main burner on production capacity and improvement with oxygen enrichment.
(Journal article; Peer reviewed, 2013)A mathematical model based on a mass and energy balance for the combustion in a cement rotary kiln was developed. The model was used to investigate the impact of replacing about 45 % of the primary coal energy by different ... -
The impact of staged combustion on the operation of a precalciner cement kiln
(Doctoral theses at NTNU;1999:89, Doctoral thesis; Peer reviewed, 1999)In this thesis, the impact of staged combustion on the operation of a precalciner cement kiln, is considered. Mathematical modelling and full-scale experiments at the Norcem cement works in Brevik, Norway, is the basis for ... -
The influence of the experimental span of Time-resolved X-ray tomography on dynamic parameters in a fluidized bed
(Journal article; Peer reviewed, 2011)Fluidized beds have presented some problems to experimentalists in the past due to their opaque nature [1]. This problem has however been overcome by non-intrusive nor invasive measurement techniques. X-rays or Gamma rays ...