Browsing Institutt for energi og prosessteknikk by Title
Now showing items 2917-2936 of 4143
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Optimizing a Small Ammonia Heat Pump with Accumulator Tank for Space and Hot Tap Water Heating
(Master thesis, 2015)The heat pump market offers a wide variety of different residential heat pumps where most of them utilize refrigerant R-410A which has high global warming potential. Considering the fact that global policy ... -
Optimizing design and operation of chilling tank for Atlantic salmon
(Chapter, 2019)Farmed salmon is a large export product from Norway. After the salmon is stunned and killed, it is often transported to large tanks for bleeding, chilling and buffering before gutting and further processing. The temperature ... -
Optimizing Road Gradients Regarding Earthwork Cost, Fuel Cost, and Tank-to-Wheel Emissions
(Journal article, 2020)Emissions reduction has emerged as one of the principal targets in the planning and designing of road alignment today, and intelligent design methods can help optimize road alignment as a response toward more sustainable ... -
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 ...