Browsing Institutt for energi og prosessteknikk by Title
Now showing items 2031-2050 of 4198
-
Improving the new heating-and cooling system with R290 at Teknostallen
(Master thesis, 2023)For å redusere CO2-utslipp og imøtekomme energibehov, blir fornybare energikilder i økende grad brukt, noe som fører til økt elektrifisering. Imidlertid fører dette til høyere strømpriser. For å løse dette kan varmepumpeenheter ... -
Improving the off-design efficiency of organic Rankine bottoming cycle by variable area nozzle turbine technology
(Chapter, 2021)Organic Rankine cycles (ORCs) are expected to operate more at varied working conditions, especially when rapid growth in renewable energies put power generation technologies in variable load operation. A power cycle works ... -
Improving the Recovery of Critical Metals from End-of-Life Vehicles
(Doctoral theses at NTNU;2020:90, Doctoral thesis, 2020)Car electronics form an extensive yet untapped source for secondary critical raw mate-rials. The complexity and time variability of car electronics pose a challenge for esti-mating the potentials for recycling and for ... -
Improving the Representation of Maritime Transport in the EXIOBASE MRIO Dataset
(Master thesis, 2013)This aim of this report is to improve the EXIOBASE dataset by integrating life cycle inventories of 11 individual ship classes. The report then calculated the Global Warming Potential (GWP) of seagoing transport was ... -
In the wake of turbulence: A study on the effects of freestream turbulence on the flow around simple and complex geometries
(Doctoral theses at NTNU;2022:155, Doctoral thesis, 2022)With the growing demand of global energy consumption and a need to reduce pollution caused by energy production from fossil fuels, renewable sources of energy are becoming increasingly necessary for the future sustainable ... -
In-situ measurements of lithium-ion concentrations in a lithium-ion battery using fiber-optical sensors
(Master thesis, 2023)I denne oppgaven er en single-mode optisk fiber implementert i et litium-ion batteri (LiB) for å måle endringen i konsentrasjonen i batteriet. Ettersom behovet for energilagring øker, på grunn av vekst i fornybar ... -
Inclination dependence of planar film boiling stability
(Journal article; Peer reviewed, 2018)Understanding the dynamics of film boiling is crucial for predicting its heat transfer properties. Besides the complete breakdown of film boiling (Leidenfrost point), the most prominent transition is the change from a ... -
Inclined film boiling: Film stability and heat transfer
(Journal article; Peer reviewed, 2018)An inertially modified long-wave model is used to analyze the stability of inclined saturated film boiling. By performing quasi-parallel linear stability analysis on this model and combining the result with a heat-transfer ... -
Income-based US household carbon footprints (1990–2019) offer new insights on emissions inequality and climate finance
(Journal article, 2023)Current policies to reduce greenhouse gas (GHG) emissions and increase adaptation and mitigation funding are insufficient to limit global temperature rise to 1.5°C. It is clear that further action is needed to avoid the ... -
Incorporation of uncertainty analysis in modeling of integrated reforming combined cycle
(Journal article; Peer reviewed, 2010)A systematic approach to quantify uncertainties in an integrated reforming combined cycle (IRCC) process model employing CO2 capture is presented. IRCC involves reforming of natural gas into a hydrogen-rich fuel which is ... -
Increased carbon footprint of materials production driven by rise in investments
(Peer reviewed; Journal article, 2021)The production of materials is an important source of greenhouse gas emissions. To reduce emissions, policies aim to enhance material efficiency and the circular economy, but our understanding of the dynamics of material-related ... -
Increased liquid extraction in the Kollsnes dew point process by using mixed glycols
(Master thesis, 2015) -
Increased solar energy utilization in Norwegian agriculture
(Master thesis, 2020)Dette studiets hovedmål er å utforske potensialet en økt utnyttelse av solenergi vil kunne ha for reduksjon i klimagassutslipp relatert til strømforbruk i norsk landbruk. For å kunne undersøke dette potensialet er det ... -
Increasing Hydro Turbine Operation Range and Efficiencies Using Water Injection in Draft Tubes
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:184, Doctoral thesis, 2010)It is a well known fact that most Francis turbines, because of the fixed blade design, faces challenges when running at partial load operation. Especially in the operating range below approximately 50% of the rated output, ... -
Increasing Operational Flexibility of Hydropower by New Technology
(Master thesis, 2019)Jordas økende temperatur har gjort klimaforandringer og global oppvarming til dagsaktuelle temaer. Grønn og fornybar energi er ettertraktet som aldri før. Energiproduksjon fra uforutsigbare kilder som vind og sol øker dag ... -
Increasing power output from Francis turbines: Effektøkning i vannkraftverk med Francis turbiner
(Master thesis, 2009)The main objective in this thesis was to investigate a potential increase of power output from the existing turbines at Ruacana Hydropower Station. This was restricted to only consider a runner replacement, and only technical ... -
Incremental capacity analysis (dQ/dV) as a tool for analysing the effect of ambient temperature and mechanical clamping on degradation
(Peer reviewed; Journal article, 2023)This work presents a comprehensive degradation study of two types of large lithium-ion pouch cells; 26 NMC532/Graphite (64 Ah) and 9 NMC433/Graphite (31 Ah) pouch cells. The cells were degraded under different cycling ... -
Indicators for national consumption-based accounting of chemicals
(Journal article; Peer reviewed, 2019)Increased chemical use is causing a growing number of environmental problems and chemical products are pervasive in societies within animal and crop-based agriculture, in industrial processes and in households. National ... -
Indirect Evaporative- and Desiccant Wheel Cooling for Norwegian Office
(Master thesis, 2022)Globale kjølebehov er i stadig økning og handlinger må derfor gjøres for å sørge for at driftingen av VVS-systemer blir mer klimavennlige og så energieffektive som mulig. Tradisjonelle kjølemaskiner inneholder kjølemidler ... -
Indoor air quality in natural-ventilated bedrooms in renovated Norwegian houses
(Peer reviewed; Journal article, 2021)The objective of this work is to investigate the indoor environment in bedrooms ventilated by window opening during night-time. How window opening behaviour affects indoor air quality (IAQ), and how window opening behaviour ...