Browsing NTNU Open by Author "Karoliussen, Håvard"
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Aktiv laststyring i mikronett
Lyngved, Kristian; Mickelborg, Thomas; Teigmoen, Anders (Bachelor thesis, 2019)Norway has a large coastal area with many islands that are provided with electricity from expensive sub-sea cables and long transmission lines. In stead of renewing existing infrastructure in remote areas, it could be cost ... -
An airports role in the transition to sustainable aviation with the implementation of electric planes
Erichsen, Lene T. B.; Slåtta, Ingebjørg; Tærum, Mathea Lie (Bachelor thesis, 2021)Luftfart er en viktig del av verdens kort- og langdistandemobilitet i dag og skaper store sosiale fordeler for verdens befolkning. Pågående elektrifisering av kommersiell luftfart har mål om å redusere de negative ... -
Bipolar Plates for PEM Systems
Lædre, Sigrid (Doctoral thesis at NTNU;2016:247, Doctoral thesis, 2016)Summary of thesis: The Bipolar Plate (BPP) is an important component in both Proton Exchange Membrane Fuel Cells (PEMFCs) and Proton Exchange Membrane Water Electrolyzers (PEMWEs). Bipolar plate material and processing ... -
Depotlading av elektriske busser i Oslo og Akershus
Bratlie, Frida; Haaskjold, Kristina; Nesje, Andreas Tveita (Bachelor thesis, 2019)Som en del av elektrifiseringen av den norske transportsektoren er elektriske busser et viktig bidrag for å redusere klimagassutslippet. Oslo ønsker å være i toppen av elektrifiseringen og ble tildelt tittelen Europeisk ... -
Elektrifisering av havbruk til havs
Berg, Kristina; Høigård, Elise Tajet; Sandhu, Simran Jit Kaur; Vågen, Marthe (Bachelor thesis, 2020)Fiskeri- og havbruksnæringen er en stor industri i Norge i dag. Halvparten av oppdrettsanleggene nærmere land er elektrifisert med landstrøm. De resterende oppdrettsanleggene er i dag driftet med dieselaggregat. Bruken av ... -
En effektiv energimerkeordning
Domaas, Ailda Johanne; Markhus, Silje Stavnås (Bachelor thesis, 2020)Enova la i 2019 ut et forprosjekt der det ble presentert et forslag til videreutvikling av energimerkeordningen. Dette forprosjektet ble lagt ut for høring og har svarfrist i mai 2020. Denne oppgaven ser på hvilke endringer ... -
Heat Sources, Thermal Conductivity and Heat Distribution in Electrochemical Energy Storage Technologies
Bock, Robert (Doctoral theses at NTNU;2018:408, Doctoral thesis, 2018)The work presented in this thesis is based on taking thermal conductivity measurements of a range of materials used in three different electrochemical energy storage technologies. Specifically, two hydrogen technologies, ... -
The influence of concentration and temperature on the membrane resistance of ion exchange membranes and the levelised cost of hydrogen from reverse electrodialysis with ammonium bicarbonate
Raka, Yash Dharmendra; Bock, Robert; Karoliussen, Håvard; Wilhelmsen, Øivind; Burheim, Odne Stokke (Peer reviewed; Journal article, 2021)The ohmic resistances of the anion and cation ion-exchange membranes (IEMs) that constitute a reverse electrodialysis system (RED) are of crucial importance for its performance. In this work, we study the influence of ... -
Materials for Proton Exchange Membrane water electrolyzer bipolar plates
Lædre, Sigrid; Kongstein, Ole Edvard; Ødegård, Anders; Karoliussen, Håvard; Seland, Frode (Journal article; Peer reviewed, 2017)Titanium based BiPolar Plates (BPPs) are commonly used in Proton Exchange Membrane Water Electrolyzers (PEMWEs) today as they can withstand the harsh operating conditions experienced inside an operating PEM water electrolyzer. ... -
Measuring In Situ Interfacial Contact Resistance in a Proton Exchange Membrane Fuel Cell
Lædre, Sigrid; Kongstein, Ole Edvard; Ødegård, Anders; Seland, Frode; Karoliussen, Håvard (Journal article; Peer reviewed, 2019)Interfacial contact resistance (ICR) is one of the remaining hurdles for successful implementation of stainless steel bipolar plates in PEM fuel cells. We have developed a reliable method, using thin gold wires, to measure ... -
Measuring the thermal conductivity of membrane and porous transport layer in proton and anion exchange membrane water electrolyzers for temperature distribution modeling
Bock, Robert; Karoliussen, Håvard; Seland, Frode; Pollet, Bruno; Thomassen, Magnus; Holdcroft, Steven; Burheim, Odne Stokke (Journal article; Peer reviewed, 2019)Water electrolyzers that use a membrane electrolyte between the electrodes are a promising technology towards mass production of renewable hydrogen. High power setups produce a lot of heat which has to be transported through ... -
Opportunities and challenges for thermally driven hydrogen production using reverse electrodialysis system
Raka, Yash Dharmendra; Karoliussen, Håvard; Lien, Kristian Myklebust; Burheim, Odne Stokke (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 ... -
Optimising fast charging of electric vehicles by smart charging technologies in areas with limited grid capacity
Berdahl, Cassandra; Jamessen, Eivind; Merzoug, Sabine (Bachelor thesis, 2020)Tilrettelegging av hurtigladeteknologi bidrar til Norges mål om at alle biler skal være utslippsfrie innen 2025 og vil være avgjørende for elektrifiseringen av transportsektoren. I dag eier Circle K et betydelig antall ... -
Optimization of Microgrids Feasibility Study and Economic Analysis of Rye Microgrid
Berge, Renate Høvik; Haugland, Fredrik Rudfoss; Langseth, Ida Erika Witt (Bachelor thesis, 2019)Mikronett har potensialet til å bli en fremtidlig løsning for å forsyne avsidesliggende steder med energi. TrønderEnergi undersøker denne forretningsmuligheten som en del av REMOTE prosjektet på Froan, en gruppe øyer på ... -
Production Strategies for Sustainable LIB Cathodes with Enhanced Rate Capability and Energy Density
Bryntesen, Silje Nornes (Doctoral theses at NTNU;2023:109, Doctoral thesis, 2023) -
Samspillet mellom fremtidig energimiks og hydrogen for å nå norske klimamål mot 2050
Skipevåg, Ragnhild; Torper, Anneli Sørland (Bachelor thesis, 2021)Gjennom Kyotoavtalen og Parisavtalen har Norge forpliktet seg til å redusere klimagassutslipp kraftig innen 2030 og 2050. Hydrogen som energibærer kan bli en viktig grunnpilar for at Norge skal nå klimamålene. Produksjon ... -
Survey of Wave Energy and matured Wave Energy Technology
Sørbotten, Tuva Garbom (Bachelor thesis, 2020)Hensikten med denne bacheloren har vært å gjennomføre en undersøkelse for å finne ut statusen på bølgekraft i dag, hvor modnet bølgekraftteknologien er og om den er kokurransedyktig på markedet i dag. Hoveddelen av bacheloren ... -
Ta-ITO Coated Titanium Bipolar Plates for Proton Exchange Membrane Water Electrolyzers
Lædre, Sigrid; Mendizabal, Lucia; Kongstein, Ole Edvard; Ødegård, Anders; Karoliussen, Håvard; Seland, Frode (Peer reviewed; Journal article, 2022)A novel bi-layer coating composed of a tantalum base layer with an Indium Tin Oxide (ITO) top layer was applied to titanium substrates. Samples were polarized ex situ in a parameter study, where the pH, potential and ... -
The influence of argon, air and hydrogen gas on thermal conductivity of gas diffusion layers and temperature gradients in PEMFCs
Bock, Robert; Hamre, Bjørnar; Onsrud, Morten Andreas; Karoliussen, Håvard; Seland, Frode; Burheim, Odne Stokke (Journal article; Peer reviewed, 2019)Gas diffusion layers (GDL) in fuel cells have to satisfy a range of conflicting demands. They must deliver good mass transport, but also good electrical and thermal transport. The thermal conductivity of two GDLs was ... -
The influence of graphitization on the thermal conductivity of catalyst layers and temperature gradients in proton exchange membrane fuel cells
Bock, Robert; Karoliussen, Håvard; Pollet, Bruno; Secanell, Marc; Seland, Frode; Stanier, Dave; Burheim, Odne Stokke (Journal article; Peer reviewed, 2018)As the proton exchange membrane fuel cell (PEMFC) has improved its performance and power density, the efficiency has remained unchanged. With around half the reaction enthalpy released as heat, thermal gradients grow. To ...