Browsing Institutt for energi og prosessteknikk by Title
Now showing items 2220-2239 of 4173
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Investigations of the extended Eddy Dissipation Concept formulation for weakly turbulent and slow chemistry flames
(Peer reviewed; Journal article, 2023)Recent extensions of the Eddy Dissipation Concept (EDC) are investigated with the purpose of analysing the importance of model limiters to the EDC performance when predicting Moderate and Intense Low-oxygen Dilution (MILD) ... -
Investigations of unsteady pressure loading in a Francis turbine during variable-speed operation
(Journal article; Peer reviewed, 2017)Current study was aimed to investigate the unsteady pressure loading in a model Francis turbine under variable-speed configurations. Focus was to investigate the time-dependent characteristic frequencies and the pressure ... -
Investigations on mixture preparation for two phase adiabatic pressure drop of R134a flowing in 5 mm diameter channel
(Journal article; Peer reviewed, 2017)The article presents detailed two-phase adiabatic pressure drops data for refrigerant R134a. Study cases have been set for a mass flux varying from 200 to 400 kg/m2 s, at the saturation temperature of 19.4 ◦C. Obtained ... -
Investigations on the Sustainable Resource Use of Swiss Timber
(Peer reviewed; Journal article, 2021)In Switzerland, the advantages of timber buildings for the climate are broadly discussed. In the following paper, a comparative sustainability assessment of four building alternatives is presented. Especially the contribution ... -
(Invited) Novel Fuel Production Based on Sonochemistry and Sonoelectrochemistry
(Journal article; Peer reviewed, 2019)Sonochemistry has been used in many applications where it is employed to improve both catalytic and synthetic processes; whereas, sonoelectrochemistry has been used in various studies including organic syntheses, environmental ... -
Ionomer content optimization in nickel-iron-based anodes with and without ceria for anion exchange membrane water electrolysis
(Journal article; Peer reviewed, 2021)Hydrogen production from anion exchange membrane water electrolysis (AEMWE) is an efficient cost-effective solution to renewable energy storage. Contrary to proton exchange membrane (PEM) electrolysis, AEMWE requires further ... -
Iron Ore Price Prediction Based on Multiple Linear Regression Model
(Journal article, 2023)The fluctuation of iron ore prices is one of the most important factors affecting policy. Therefore, the accurate prediction of iron ore prices has significant value in analysis and judgment regarding future changes in ... -
Irreversibility of combustion, heat and mass transfer
(Master thesis, 2011)Combustion is by far the most commonly used technology for energy conversion. The analysis of entropy generation and exergy loss is normally used to optimize thermal energy technologies such as gas turbines. The loss of ... -
Is a net life cycle balance for energy and materials achievable for a zero emission single-family building in Norway?
(Journal article; Peer reviewed, 2018)In this study, the objective is to redesign a previous concept for a single-family Zero greenhouse gas Emission Building (ZEB). The concept is redesigned based on comparing greenhouse gas (GHG) emission loads and compensation ... -
Is It Possible to Supply Norwegian Apartment Blocks with 4th Generation District Heating?
(Journal article; Peer reviewed, 2019)Direct electricity is widely used for heating purposes in Norway, leading to significant strain on the electricity grid during the heating season. Conversion to 4th generation district heating (4GDH) is an effective method ... -
Jet fires
(Master thesis, 2016)Knowledge of the impacts of fire is a big part of hazard analysis, and thorough fire predictions could potentially save both life and belongings. In the 1990 s, a set of fire tests on compartment fires was conducted at ... -
Judging the Generalized Newtonian Fluid assumption for cuttings transport modelling by applying time scale comparisons
(Chapter, 2018)Cellulose (PAC) solutions are often employed as drilling fluid model systems in experimental laboratory studies to investigate cuttings transport. For this purpose, PAC solutions are typically assumed to behave purely ... -
Karinelund studentby som et energipositivt nabolag
(Bachelor thesis, 2023)Globalt står byområder for omtrent 70% av klimagassutslippene, og fra 1990-2019 har utslippene fra bygg doblet seg. I EU-landene, og i Norge, er bygningsmassen ansvarlig for omtrent 40% av det totale energiforbruket og 36% ... -
Kartesiske grid metode for kompressibel strømning over oscillerende vingeprofiler.
(Master thesis, 2013)Et program har blitt utviklet for å løse de todimensjonale kompressible Eulerligningenefor strømninger over et oscillerende flyprofil. En Kartesisk gitter-metode er blitt benyttet, som gjør det nødvendig å behandle ... -
Kartlegging av vannbalanser i et småkraftverk
(Bachelor thesis, 2023)Formålet med oppgaven er å kartlegge og vurdere påliteligheten til vannbalansene for et småkraftverk. Dette inkluderer også volumstrømmen og effekten til en peltonturbinen ved hjelp av dyesåpningen. For Nessane er det ... -
Kartlegging av vannforbruk i idrettsbygg
(Bachelor thesis, 2022)Denne oppgaven handler om å kartlegge vannforbruk i idrettsbygg. Problemstillingen er todelt og baserer seg på vannlekkasjer i idrettsbygg og overdimensjonering av sanitæranlegg. Vannlekkasjer og unødvendig vannforbruk ... -
Kennfeld und Leistungsanalyse einer zweistufigen Turbokompressor-Brüdenverdichtung
(Chapter, 2018)Die mechanische Brüdenverdichtung ist eine Spezialform der Wärmepumpentechnologie. Überschüssiger Dampf aus industriellen Prozessen (R718) wird verdichtet und die Kondensationswärme genutzt um den Prozess zu hei-zen. ... -
Kjølemetode for varmetransport i sveiseprosesser
(Master thesis, 2010)Avhandlingen beskriver viktige faktorer som må evalueres når kjølemediene skal velges og diskuterer de best egnede kjølemediene. Teoretisk viser karbondioksid ? tett etterfulgt av nitrogen ? seg som det best egnede ... -
Kjøling av rågass fra aluminium elektrolyseceller
(Master thesis, 2009)Formålet med denne oppgaven er å undersøke ulike konsepter for kjøling av rågassen i et av renseanleggene ved Hydro Sunndal. Det er foretatt en gjennomgang av aktuelle metoder, og metodene er evaluert og sammenlignet med ... -
Klimagassbesparelser knyttet til ombruk av ulike bæresystemer
(Master thesis, 2023)I Parisavtalen, vedtatt i 2015, ble det fastsatt et mål om å begrense økningen i den globale gjennomsnittstemperaturen til 2 °C, helst 1,5 °C, over førindustrielt nivå. På bakgrunn av dette har EU blant annet et mål om å ...