Browsing NTNU Open by Title
Now showing items 38146-38165 of 100616
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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-Atomized Nickel Silicide Powders Alloyed with Molybdenum, Cobalt, Titanium, Boron, and Vanadium for Additive Manufacturing
(Peer reviewed; Journal article, 2023)Nickel silicides (NiSi) are renowned for their ability to withstand high temperatures and resist oxidation and corrosion in challenging environments. As a result, these alloys have garnered interest for potential applications ... -
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-fired power plants: Investment timing, operating flexibility and CO2 capture
(Journal article; Peer reviewed, 2010)We analyze investments in gas-fired power plants based on stochastic electricity and natural gas prices. A simple but realistic two-factor model is used for price processes, enabling analysis of the value of operating ... -
Gas-lift Optimization by Controlling Marginal Gas-Oil Ratio using Transient Measurements
(Journal article; Peer reviewed, 2018)This paper presents the application of a steady-state gradient control using transient measurements to a gas-lift optimization problem. Optimal operation of a gas-lifted field involves controlling the marginal gas-oil ratio ... -
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 ... -
Gasellebedrifters bruk av styringssystem
(Master thesis, 2022)Dagens Næringsliv har helt siden 2003 kåret Norges raskest voksende bedrifter og kalt disse for gasellebedrifter. Siden Verdens Helseorganisasjon erklærte Covid-19 viruset som en pandemi i mars 2020, har omgivelsene til ... -
Gaseous reduction of Mn ores in CO-CO2 atmosphere
(Chapter, 2018)The efficiency in production of manganese ferroalloys is dependent on the gaseous reduction of the higher manganese oxides in the ores used as raw materials. The materials, descending in the furnace, will meet the furnace ... -
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 Kårstø
(Master thesis, 2007)Denne diplomoppgaven er skrevet i samarbeid med Statnett. Naturkraft har under bygging et gasskraftverk på Kårstø i Rogaland. Dette er et såkalt combined-cycle-kraftverk (kombinert kraftverk), som består av en gassturbin ... -
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 ... -
Gassrensing og varmegjennvinning i ferrolegeringsindustrien
(Master thesis, 2007)Produksjon av ferrolegeringer foregår ved høye temperaturer, og store mengder støv dannes i prosessen. Denne oppgaven gir en generell oversikt over ferrolegeringsindustrien, med fokus på hvordan støvpartiklene kan fjernes ... -
Gastric Adenocarcinoma in Central Norway: Incidence, treatment, and long term survival rates, with emphasis on outcomes after introducing perioperative chemotherapy
(Doctoral thesis at NTNU;2016:261, Doctoral thesis, 2016)I løpet av de siste 20 årene er flere endringer gjort i utredning og behandling av pasienter fra Midt Norge med kreft i magesekken. Kartlegging av svulstomfang med snitt røntgen (CT) er standardisert, og selvekspanderende ...