Blar i Fakultet for ingeniørvitenskap (IV) på tittel
Viser treff 9492-9511 av 22996
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Gas flow through shallow sediments - A case study using passive and active seismic field data
(Journal article; Peer reviewed, 2019)Offshore Quaternary sediment sequences are generally weak and unconsolidated, and fluid flow through these rock formations is hard to predict or model. Surface flow observations, such as gas seeps, often appear random and ... -
Gas Influx Handling for Dual Gradient Drilling
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:338, Doctoral thesis, 2011)New drilling technology is primarily developed when limitations of existing technology makes it difficult or impossible to reach new targets. Drilling in deep waters and in depleted reservoirs is less profitable or too ... -
Gas switching reforming (GSR) for power generation with CO2 capture: Process efficiency improvement studies
(Journal article; Peer reviewed, 2019)This paper presents the process improvement studies of a combined cycle power plant integrated with a novel gas switching reforming (GSR) process for hydrogen production with integrated CO2 capture. The overall process is ... -
Gas Switching Reforming (GSR) for syngas production with integrated CO2 capture using iron-based oxygen carriers
(Journal article; Peer reviewed, 2019)The process behavior of a Gas Switching Reforming (GSR) reactor was studied using three different iron-based oxygen carrier materials: Iron-oxide on Alumina, Iron-Nickel oxide on Alumina and Iron-Ceria on Alumina. It was ... -
Gas switching reforming for flexible power and hydrogen production to balance variable renewables
(Peer reviewed; Journal article, 2019)Variablerenewableenergy(VRE)isexpectedtoplayamajorroleinthedecarbonizationoftheelectricitysector.However, decarbonization via VRE requires a fleet of flexible dispatchable plants with low CO2emissions tosupplycleanpowerduringtimes ... -
Gas Switching Reforming for syngas production with iron-based oxygen carrier-the performance under pressurized conditions
(Journal article; Peer reviewed, 2019)A four-stage Gas Switching Reforming for syngas production with integrated CO2 capture using an iron-based oxygen carrier was investigated in this study. The oxygen carrier was first reduced using dry methane, where high ... -
Gas switching technology: Economic attractiveness for chemical looping applications and scale up experience to 50 kWth
(Peer reviewed; Journal article, 2022)Gas switching technology (GST) was introduced to facilitate operation and scale-up of pressurized chemical looping-based technologies thus bringing the expected benefits of reducing costs and energy penalty of CO2 capture. ... -
Gas Turbine Deterioration and Recovery
(Master thesis, 2016)Gas turbines used in the platform industry are subjected to challenging operating conditions in the harsh offshore environment. Compressor fouling is reported to be the main reason for gas turbine performance loss and can ... -
Gas turbine exhaust gas heat recovery by organic Rankine cycles (ORC) for offshore combined heat and power applications - Energy and exergy analysis
(Journal article; Peer reviewed, 2018)Effective heat and power supply to offshore installations leads to environmental benefits, but the efficiency is often limited by requirements and constraints connected to the offshore environment. An exergetic analysis ... -
Gas Turbine Intake Filters
(Master thesis, 2009) -
Gas Turbine Intake Filters
(Master thesis, 2009)Energy offshore is mainly generated by gas turbines. Degradation of gas turbines is a source of considerable expenses for the oil and gas producing companies, and contributes to increased emissions to the atmosphere. ... -
Gas Turbine Operation - Drift av Gassturbiner
(Master thesis, 2018)Important power and mechanical drive demands offshore are met by utilizing gas turbines. The safe and reliable operation of these fine-tuned thermo machines are of key importance to maintain platform operation. Problems ... -
Gas Turbine Optimum Operation
(Master thesis, 2010)Many offshore installations are dependent on power generated by gas turbines and a critical issue is that these experience performance deterioration over time. Performance deterioration causes reduced plant efficiency and ... -
Gas Turbine Performance Deterioration
(Master thesis, 2010)IToday, gas turbines are generally used to produce electricity and drive natural gas compressors on offshore installations. The performance of gas turbines is reduced gradually, and this lead to reduced production capacity ... -
Gas-filled panels for building applications: A state-of-the-art review
(Journal article; Peer reviewed, 2010)With their thermal conductivity down to 10 mW/(mK), gas-filled panels (GFPs) are regarded as possible high performance thermal insulating solutions for building applications. However, thermal conductivities of respectively ... -
Gas-side fouling of heat exchanger surfaces
(Master thesis, 2017)Fouling is an unpleasant and unavoidable occurrence in heat exchangers that decreases the performance of the heat exchanger. Fouling reduces the overall efficiency of a system and can lead to equipment failure. Understanding ... -
Gasification of Biomass for Second Generation Biofuel Production
(Doctoral thesis at NTNU;2015:77, Doctoral thesis, 2015)Gasification of biomass is perceived as one of the most attractive thermochemical processes to produce carbon neutral syngas that can be burned to release energy or used as the building blocks for the production of ... -
Gasification of High Heating-rate Biomass-derived Chars at Elevated Temperatures
(Journal article; Peer reviewed, 2017)In this study, gasification behavior of high heating-rate chars were investigated using an entrained flow reactor with an optical particle-sizing pyrometer. Two biomass chars produced from forest residue and torrefied ... -
Gass/væskeseparasjon i LNG-anlegg
(Master thesis, 2008)Oppgaven evaluerer separasjonsutstyr som benyttes i Hammerfest LNG-anlegg med hovdefokus på virkemåte og separasjonseffektivitet. Driftsdata fra høsten 2007/våren 2008 sammenlignes med designdata og uregulær drift kartlegges. ... -
Gasskraftverk med CO2-håndtering - Studie av alternative teknologier
(Research report, 2002)Rapporten dokumenterer en studie som beskriver og sammenligner 12 ulike teknologier for gasskraftverk med CO2-håndtering. Merkostnaden for å fjerne CO2 i forbindelse med elektrisitetproduksjon er i studien beregnet til ...