Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 2970-2989 av 4210
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Optimizing the Compression/Absorption Heat Pump System at High Temperatures
(Master thesis, 2015)Large amounts of low grade waste heat from industrial processes are not utilized, due to lack of heat integration equipment. Industrial processes tend to have specifications at high temperature lifts, that not are suited ... -
Optimizing the heating and cooling system at Teknostallen
(Master thesis, 2023)For å redusere CO2 utslippet til atmosfæren har det vært forsøkt å implementere ulike energikilder for å møte energibehovet. Siden flertallet av fornybare energikilder kan produsere elektrisitet, har det blitt skapt en ... -
Optimizing the phosphorus resource use and emissions in a growing Norwegian aquaculture industry
(Master thesis, 2021)Fosfor (P) er en begrenset ressurs som også forårsake eutrofiering. Denne studien har ved bruk av en substansflytanalyse kvantifisert utslippene av fosfor (P), nitrogen (N) og karbon (C) fra norsk oppdrett av laks og ... -
Optimum Gas Transportation: Validation and Guidelines
(Master thesis, 2008)The gas transport system on the Norwegian continental shelf (NCS) consists of 7 800 km of pipelines and is the largest offshore network of its kind in the world. Natural gas is processed at treatment plants in Norway, and ... -
Optimum operation of gas export systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:247, Doctoral thesis, 2008) -
Optimum scavenger concentrations for sonochemical nanoparticle synthesis
(Journal article; Peer reviewed, 2023)Maintaining nanoparticle properties when scaling up a chemical synthesis is challenging due to the complex interplay between reducing agents and precursors. A sonochemical synthesis route does not require the addition of ... -
Options for Carbon Capture with Storage or Reuse in Waste Incineration Processes
(Master thesis, 2015)Motivated by the ascertain need for climate mitigation, more than 100 countries have endorsed the goal of reducing their emissions. The maximum of a two degree rise is emphasised but despite this, fossil fuels are predicted ... -
Organic Rankine Cycle with Pure and Mixed Working Fluids for LNG Cold Energy Recovery
(Journal article; Peer reviewed, 2019)Liquefied Natural Gas (LNG) contains a large amount of cold exergy, which is normally wasted during the regasification process. Organic Rankine Cycles (ORCs), which have been widely employed for low-temperature waste heat ... -
Orientational dependence of the van der Waals interactions for finite-sized particles
(Journal article, 2018)Dispersion forces, especially van der Waals forces as interactions between neutral and polarizable particles act at small distances between two objects. Their theoretical origin lies in the electromagnetic interaction ... -
Origin of anomalously stabilizing ice layers on methane gas hydrates near rock surface
(Peer reviewed; Journal article, 2023)Gas hydrates (GHs) in water close to freezing temperatures can be stabilised via the formation of ice layers. In a recent work [Boström et al., Astron. Astrophys., A54, 650, 2021], it was found that a surface region with ... -
Overall Evaluation of Offshore Drilling Fluid Technology: Development and Application of Life- cycle Inventory and Impact Assessment Methods
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:251, Doctoral thesis, 2007)The goal of this thesis is to provide the means for discussion of overall benefits of alternative offshore drilling technologies. Life-cycle assessment is used to assess environmental impact of alternative drilling ... -
The overlooked role of pressure oscillations on heat transfer deterioration during self-sustained flow oscillations
(Peer reviewed; Journal article, 2020)The naturally occurring oscillations during flow boiling inside a heated pipe under specific conditions are known to hinder the system performance. Although substantial research has been done to reveal the occurrence and ... -
Overskuddseffekt fra sol vind og vannkraft til varmelager for matlaging
(Master thesis, 2019) -
Overskuddseffekt fra sol, vind og vannkraft til varmelager for matlaging
(Master thesis, 2019)Hensikten med dette prosjektet var å teste om olje kan brukes til varmelagring i et kjøkkensystem basert på overskuddsenergi. Dette er en fortsettelse av prosjektoppgaven "Dump loading to high temperature heat storage", ... -
Overview and recommendations for regionalized life cycle impact assessment
(Journal article; Peer reviewed, 2018)Purpose Regionalized life cycle impact assessment (LCIA) has rapidly developed in the past decade, though its widespread application, robustness, and validity still face multiple challenges. Under the umbrella of UNEP/SETAC ... -
Overview of recent land cover changes in the biodiversity hotspots
(Research report, 2020)Biodiversity hotspots are the most biologically rich, yet threatened, terrestrial regions. From 1992 to 2015, they underwent 148 Mha of land cover changes, including forest losses (56 Mha, of which 40 Mha caused by ... -
Overview of recent land cover changes, forest harvest areas, and soil erosion trends in Nordic countries
(Peer reviewed; Journal article, 2021)Mapping spatiotemporal land cover changes offers opportunities to better understand trends and drivers of environmental change and helps to identify more sustainable land management strategies. This study investigates the ... -
Overview of recent land‐cover changes in biodiversity hotspots
(Journal article; Peer reviewed, 2020)Between 1992 and 2015, nearly 148 million hectares (Mha) within biodiversity hotspots – biologically rich but threatened terrestrial regions – worldwide underwent land‐cover changes, equating to 6% of the total areal extent ... -
Overview of recent progress towards in-situ biogas upgradation techniques
(Journal article; Peer reviewed, 2018)Biogas, as derived from the anaerobic digestion process, offers a versatile possibility of renewable and sustainable energy usage. When enriched, upgraded biogas can yield high levels of biomethane, allowing its use as an ... -
Overview of the development and status of carbon dioxide (R-744) refrigeration systems onboard fishing vessels
(Peer reviewed; Journal article, 2022)Globally, most fishing vessels still use the ozone-depleting and climate-harmful R-22 in their freezing and refrigerated seawater (RSW) systems. However, in some regions, the natural refrigerant ammonia is the preferred ...