Blar i NTNU Open på forfatter "Næss, Erling"
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Development of an Intermediate PCM Storage for a Wood Stove
Sæther, Frida (Master thesis, 2022)Norske husholdningers varmebehov blir hovedsakelig dekt av elektrisitet. En mer bære-kraftig energikilde til romoppvarming ville vært og benyttet en moderne vedovn. På grunn av de moderne passivhusenes lave varmebehov vil ... -
Development of heat pipes with potassium as woking fluid: Performance limitations and test rig development
Odden, Dan Adrian (Master thesis, 2012)The incentive to reduce energy consumption in the industry is big, especiallyin high temperature systems. Heat pipes are of great interest for this purposedue to their favorable thermomechanical properties. This master ... -
Energieffektiv hydrogenlagring: eksergianalyse av adsorpsjon
Berntsen, Trond Einar Egeberg (Master thesis, 2012)Hydrogenlagring er en nøkkelteknologi for etablering av en hydrogenøkonomi. Adsorpsjon er en av hydrogenlagringsteknologiene som for tiden utforskes sammen med hydrogen lagret som komprimert gass, væske, og i metallhydrider. ... -
Energieffektivisering av ovner i aluminiumstøperi
Skagestad, Stine Tofte (Master thesis, 2007)Målet med oppgaven er å komme frem til ei prioritert liste over tiltak som vil føre til mer energieffektiv drift av smelte/holde ovnene i støperiet på Elkem Aluminium Lista (EAL). Oppgavens fokus er ovn 6 i anlegg 5, så ... -
Energy utilization from deep geothermal sources
Ommedal, Daniel (Master thesis, 2018)Recently, heat extraction from supercritical water (i.e. high pressure and high temperature) has received significant attention. Supercritical water from aquatic reservoirs several kilometers below the surface are led to ... -
Engineered Geothermal Systems
Drange, Lars Anders (Master thesis, 2011)Different concepts for Enhanced Geothermal Systems (EGS) are presented and evaluated according to their potential for medium to large scale power production in Norwegian conditions. Potential locations for geothermal energy ... -
Evaluation of fiber for fault detection in a Direct Electrical Heating System
Heggdal, Siri Alsvik (Master thesis, 2015)Direct electrical heating (DEH) is a field proven flow assurance technology which is based on controlling the temperature by electrifying the pipeline and utilizing the pipelines electrical resistance to generate heat. ... -
Evaluation of Process Cooling in Subsea Separation, Boosting and Injection Systems (SSBI)
Gyllenhammar, Svenn Emil (Master thesis, 2012)The next generation of subsea process systems will combine the subsea gas compression technology currently under qualification with the previously developed subsea processing technologies, including separation, multiphase ... -
Experimental and theoretical investigation of heat transfer in metallurgical furnace sidelining cooling system
Hansen, Geir (Doctoral theses at NTNU;2016:290, Doctoral thesis, 2016)The purpose of this work was to investigate theoretically and experimentally the heat transfer of a metallurgical furnace side-lining cooling system utilizing evaporation/boiling and condensation of a suitable working ... -
Experimental design and testing of a PCM-based heat storage unit for wood stoves
Mathisen, Henning Hvål (Master thesis, 2019)Bruken av vedovner har lange tradisjoner i Norge, både når det gjelder oppvarming og hygge. Moderne hus er gjerne godt isolerte med lite varmetap og siden vedovner typisk har høy varmeavgivelse, kan dette føre til overoppheting ... -
Experimental investigation of heat transfer and pressure drop in compact waste heat recovery units
Holfeld, Anna (Doctoral theses at NTNU;2016:303, Doctoral thesis, 2016)The objective of this thesis is to assess the optimal design of a compact and efficient waste heat recovery. In order to investigate the heat transfer and pressure drop of compact heat exchangers an experimental rig was ... -
Experimental investigation of heat transfer and pressure drop in fin-tube waste heat recovery heat exchangers
Skutevik, Øystein Holand (Master thesis, 2014)The aim of this master thesis was to investigate heat transfer and pressure drop of fin-tube heat exchangers. Experimental investigations of heat transfer and pressure drop in fin-tube bundles has been performed. The main ... -
Fordamping og kondensasjon i varmerør med kalium som arbeidsmedium
Hultin, Annette (Master thesis, 2011)In order to reduce energy consumption, high temperature heat recovery is of great interest in industry. Liquid metal heat pipes are of special interest due to their superior thermomechanical properties. This master s thesis ... -
Gas-side fouling of heat exchanger surfaces
Tandberg, Alexander Ruslan (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 ... -
Geothermal Energy at Oslo Airport Gardermoen
Huuse, Karine Valle; Moxnes, Vilde (Master thesis, 2012)Rock Energy is a Norwegian company with a patented solution for drilling deep geothermal wells, for exploitation of deep geothermal energy from Hot Dry Rocks. The concept involves a drilled sub-surface heat exchanger, ... -
Geothermal energy: Model development and analysis of a pilot project
Rindahl, Cecilie (Master thesis, 2016)The objective of this study is to develop a calculation method taking into account the thermal interaction between several deep boreholes. Based on a literature study on heat transfer models, a hybrid model combining an ... -
Heat Capacity Measurements of Porous Materials at Cryogenic Temperatures
Mohn, Thea Ragna Storesund (Master thesis, 2012)In the search for new technology, new materials are prerequisite for major breakthrough. One of these classes of functional materials is the metal-organic framework (MOF). The MOFs offer higher surface areas because of its ... -
Heat Transfer – Between Rock Mass and Tunnel Room
Tinderholt, Silje Marie (Master thesis, 2019)Bruk av tunnelkledning uten frostsikring er en økende trend, spesielt i jernbane tunneler. Dette er metoder som er lite brukt i Norge tidligere, og dermed er det også minimalt med kunnskap om hvordan kledningen faktisk ... -
Hydrogen Storage: Thermophysical data and flow properties for some porous media
Abrahamsen, Ole Kristoffer (Master thesis, 2010)Two rigs have been developed and built to measure thermal conductivity and permeability for porous materials. The intention of the rigs is to investigate the properties of some hydrogen adsorption materials. The materials ... -
Investigation of a twisted-tube type shell-and-tube heat exchanger
Danielsen, Sven Olaf (Master thesis, 2009)This master thesis investigates twisted tube type shell-and-tube heat exchangers with emphasis on thermal-hydraulic characteristics, fouling and vibration properties. An extensive literature study has been carried out in ...