Browsing Institutt for energi og prosessteknikk by Title
Now showing items 778-797 of 4164
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Cross-Scale Flow Field Analysis of Sealing Chamber and End Face Considering the CO2 Real Gas Effect
(Peer reviewed; Journal article, 2021)The dry gas seal (DGS) is a non-contacting, gas-lubricated mechanical face seal commonly used in rotating machinery. Traditional analyses of DGSs treat the end face as an independent factor by setting the end-face inlet ... -
Cross-sectional wake measurements of actuator disks.
(Master thesis, 2019)Eit tversnitt normalt på straumninga i vakane til to ikkje-roterande vindturbinmodellar har blitt målt ved x = 4D nedstraums. Ved å bruke ein 4-hols Cobra probe har vanlege aksiale straumningsmålingar blitt utvida til å ... -
Crossing CO2 equator with the aid of multi-ejector concept: A comprehensive energy and environmental comparative study
(Journal article; Peer reviewed, 2018)The ever-stricter regulations put into effect worldwide to significantly decrease the considerable carbon footprint of commercial refrigeration sector have forced the transition to eco-friendlier working fluids (e.g. CO2, ... -
A Crowdsourcing-based Localization Scheme with Ultra-Wideband Communication
(Peer reviewed; Journal article, 2020)With the development of mobile computing, crowd-sourcing has become one of the key technologies supporting collaborative tasks. It has been widely used in areas of real-time localization, such as data collection and ... -
Cryogenic CO2 condensation and membrane separation of syngas for large-scale LH2 production
(Chapter, 2017)Liquid hydrogen (LH2) has the potential to become a global energy commodity analogous to liquefied natural gas (LNG) in the future. This will require LH2 production capacities of similar scale as for large-scale LNG plants. ... -
Cryogenic cold utilization and system integration possibilities for LNG-driven fishing vessels
(Chapter, 2020)Liquified natural gas (LNG) fuelled vessels are increasing in the fishing industry due to its reduced environmental footprint as compared to vessels using heavy hydrocarbon fuels. Cryogenic tanks are used to store LNG on ... -
Cryogenic hydrogen adsorption storage: An investigation of thermo-physical properties and storage tank performance
(Doctoral thesis at NTNU;2016:85, Doctoral thesis, 2016) -
Cryogenic vs. absorption biogas upgrading in liquefied biomethane production – An energy efficiency analysis
(Journal article; Peer reviewed, 2019)Production of liquefied biomethane (LBM) from biogas comprises two major energy intensive processes; upgrading to increase the methane concentration and refrigeration to liquefy the upgraded biogas. Amine-based absorption ... -
Culture adaptation for enhanced biogas production from birch wood applying stable carbon isotope analysis to monitor changes in the microbial community
(Peer reviewed; Journal article, 2023)Birch wood is a potential feedstock for biogas production in Northern Europe; however, the lignocellulosic matrix is recalcitrant preventing efficient conversion to methane. To improve digestibility, birch wood was thermally ... -
CuO–NiO/Co3O4 hybrid nanoplates as highly active catalyst for ammonia borane hydrolysis
(Peer reviewed; Journal article, 2020)Dehydrogenation of hydrogen-rich chemicals, such as ammonia borane (AB), is a promising way to produce hydrogen for mobile fuel cell power systems. However, the practical application has been impeded due to the high cost ... -
Current and Future Energy Use for Atlantic Salmon Farming in Recirculating Aquaculture Systems in Norway
(Master thesis, 2020)Den landbaserte produksjonsfasen er utvidet i den norske lakseoppdrettsnæringen de siste årene, hovedsakelig som en konsekvens av problemer med lus og sykdom i tradisjonell produksjon i merder. I tillegg, er ønsket om å ... -
Current mapping from the wave spectrum
(Chapter, 2021) -
Current research in hydraulic turbines against sediment erosion: International partnership and collaborations
(Peer reviewed; Journal article, 2021)The problem of material erosion in hydraulic machineries has been under the investigation since a century ago. However, the proper solutions to the erosion of hydro turbine due to sediment-laden flows has not been found ... -
Current state and market trends in technologies with natural refrigerants
(Chapter, 2021)The market for refrigeration and heat pumps systems based on natural working fluids is growing at different pace in different market segments, while they have always been applied and available in others. The aim of this ... -
Current Status of Automotive Fuel Cells for Sustainable Transport
(Journal article; Peer reviewed, 2019)Automotive proton-exchange membrane fuel cells (PEMFCs) have finally reached a state of technological readiness where several major automotive companies are commercially leasing and selling fuel cell electric vehicles, ... -
Current Trends for State-of-Charge (SoC) Estimation in Lithium-Ion Battery Electric Vehicles
(Peer reviewed; Journal article, 2021)Energy storage systems (ESSs) are critically important for the future of electric vehicles. Despite this, the safety and management of ESSs require improvement. Battery management systems (BMSs) are vital components in ESS ... -
Curvature Corrections Remove the Inconsistencies of Binary Classical Nucleation Theory
(Peer reviewed; Journal article, 2020)The study of nucleation in fluid mixtures exposes challenges beyond those of pure systems. A striking example is homogeneous condensation in highly surface-active water-alcohol mixtures, where classical nucleation theory ... -
Curvature effects on NO formation in wrinkled laminar ammonia/hydrogen/nitrogen-air premixed flames
(Peer reviewed; Journal article, 2021)The formation of nitrogen oxide (NO) in wrinkled laminar NH3/H2/N2-air premixed flames is investigated utilizing two-dimensional Direct Numerical Simulation (DNS) with detailed chemical kinetics as well as one-dimensional ... -
Curved Boundary Conditions for the Lattice Boltzmann Method
(Master thesis, 2011)The lattice Boltzmann method is a modern method in computational fluid dynamics. Its primary use is the simulation of incompressible flows. It has computational advantages over conventional methods like the finite volume ... -
Cuttings Transport Modeling - Part 1: Specification of Benchmark Parameters with a Norwegian Continental Shelf Perspective
(Journal article; Peer reviewed, 2018)In oil and gas drilling, cuttings transport related problems are a major contributor to well downtime and costs. As a result, solutions to these problems have been extensively researched over the years, both experimentally ...