Browsing Institutt for energi og prosessteknikk by Title
Now showing items 2870-2889 of 4210
-
On vortex shedding from a hexagonal cylinder
(Journal article; Peer reviewed, 2011) -
Onboard measurements of pressure pulsations in a high head Francis model runner
(Journal article; Peer reviewed, 2019)Over the last years, there have been several incidents with cracks in high head Francis turbines. These cracks are understood to be related to pressure pulsations, vibration modulus and the combination of these. In this ... -
One-Dimensional Annular Diffuser Model for Preliminary Turbomachinery Design
(Journal article; Peer reviewed, 2019)Annular diffusers are frequently used in turbomachinery applications to recover the discharge kinetic energy and increase the total-to-static isentropic efficiency. Despite its strong influence on turbomachinery performance, ... -
One-dimensional mathematical modeling of two-phase ejectors: Extension to mixtures and mapping of the local exergy destruction
(Peer reviewed; Journal article, 2022)The ejector is a process equipment frequently used in refrigeration processes. There is currently a knowledge gap on the efficiency of ejectors operating with mixtures. To address this knowledge gap, we present a one-dimensional ... -
Online condition monitoring of heat exchangers in a TEG dehydration process
(Master thesis, 2022)Naturgass produsert på den norske kontinentalsokkelen blir behandlet på offshoreanlegg, hvor blant annet vann fjernes ved glykolbasert dehydrering. Olje- og gassindustrien jobber kontinuerlig med å forbedre sikkerheten og ... -
Online Internal Temperature Sensors in Lithium-Ion Batteries: State-of-the-art and Future Trends
(Peer reviewed; Journal article, 2022)The temperature of the lithium-ion battery is a crucial measurement during usage for better operation, safety and health of the battery. In-situ monitoring of the internal temperature of the cells is an important input for ... -
Online measurements of fluoride ions in proton exchange membrane water electrolysis through ion chromatography
(Peer reviewed; Journal article, 2021)This work investigates the online monitoring of fluoride ion concentration in proton exchange membrane water electrolysers (PEMWE) effluent water using an automated ion chromatography (IC) setup. Prototype catalyst coated ... -
Operability of Integrated Gasification Combined Cycle Power Plant with SEWGS Technology for Pre-combustion CO2 Capture
(Journal article; Peer reviewed, 2014)This paper investigates the performance of an integrated gasification combined cycle (IGCC) power plant incorporating a sorption enhanced water gas shift (SEWGS) process for pre-combustion CO2 capture at part-load conditions. ... -
Operando detection of single nanoparticle activity dynamics inside a model pore catalyst material
(Peer reviewed; Journal article, 2020)Nanoconfinement in porous catalysts may induce reactant concentration gradients inside the pores due to local conversion. This leads to inefficient active material use since parts of the catalyst may be trapped in an ... -
Operating room ventilation and the risk of revision due to infection after total hip arthroplasty: assessment of validated data in the Norwegian Arthroplasty Register
(Peer reviewed; Journal article, 2020)Background The air in the operating room is considered a risk factor for surgical site infection (SSI) due to airborne bacteria shed from the surgical staff or from patients themselves. Aim To assess the influence of ... -
Operation of power cycles with integrated CO₂ capture using advanced high-temperature technologies
(Doctoral thesis at NTNU;2015:117, Doctoral thesis, 2015)One of the routes for CO2 capture from power plants is to remove carbon content of the fuel before combustion takes place, known as pre-combustion CO2 capture. A typical pre-combustion CO2 capture method consists of two ... -
Operation strategies to achieve low supply and return temperature in district heating system
(Journal article; Peer reviewed, 2019)English -
Opinion: The Scientific and Community-Building Roles of the Geoengineering Model Intercomparison Project (GeoMIP) - Past, Present, and Future
(Journal article, 2022)The Geoengineering Model Intercomparison Project (GeoMIP) is a coordinating framework, started in 2010, that includes a series of standardized climate model experiments aimed at understanding the physical processes and ... -
Opportunities and challenges for thermally driven hydrogen production using reverse electrodialysis system
(Journal article; Peer reviewed, 2019)Ongoing and emerging renewable energy technologies mainly produce electric energy and intermittent power. As the energy economy relies on banking energy, there is a rising need for chemically stored energy. We propose heat ... -
Opportunities and challenges related to a hydrogen-electric fishing vessel
(Bachelor thesis, 2022)Norge er et land med et sterkt forhold til kysten og dens ressurser. Fiskeindustrien bidrar til inntekt både for mange nordmenn og Norge som land. De fleste fiskefartøy i Norge har i dag dieselfremdrift. På grunn av global ... -
Opportunities for increased profit and reduced cost and emissions by service differentiation within container liner shipping
(Journal article; Peer reviewed, 2016)This paper investigates opportunities for increased profit and reduced emissions and cost by service differentiation within container shipping. Traditionally the strategy among the container lines has been profit maximization ... -
Opportunities for Local Energy Supply in Norway: A Case Study of a University Campus Site
(Journal article; Peer reviewed, 2019)Neighbourhoods can contribute to climate change mitigation by supplying and/or facilitating renewable energy sources (RES). In this context, we evaluate opportunities related to the energy system of a Norwegian university ... -
Opportunities for the state-of-the-art production of LIB Electrodes – A review
(Peer reviewed; Journal article, 2021)A sustainable shift from internal combustion engine (ICE) vehicles to electric vehicles (EVs) is essential to achieve a considerable reduction in emissions. The production of Li-ion batteries (LIBs) used in EVs is an ... -
Oppvarming og varmegjenvinning i dagligvarebutikker
(Master thesis, 2012)Dagligvarebutikker i Norge er store brukere av energi. Som et ledd i å redusere energibehovet for sine nåværende og fremtidige butikker, har dagligvarekjeden REMA 1000 inngått et samarbeid med SINTEF Energi. Dette samarbeidet ... -
Optical Measurements of In-Flame Soot in Compression-Ignited Methyl Ester Flames
(Journal article; Peer reviewed, 2019)This study investigates in-flame sooting characteristics of biodiesel surrogates in compression-ignited spray flames. The aim of the study is to produce reliable experimental data on in-flame soot for validation of kinetic ...