Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 3317-3336 av 4249
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Relationships of multiple landscape services and their influencing factors on the Qinghai–Tibet Plateau
(Journal article, 2020)Context Constructing a sustainable landscape pattern from the perspective of landscape sustainability is scientifically built on the clarification of the formation mechanisms of landscape services and their relationships. ... -
Relaxation models for two-phase flow with applications to CO2 transport
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:224, Doctoral thesis, 2013)This thesis presents mathematical models for two-phase pipeline flow, with an emphasis on applications to CO2 pipeline flow, as well as numerical methods suitable for solving these models. The considered models form a ... -
Relaxation phase during droplet impact on superhydrophobic surfaces with high contact angle hysteresis
(Peer reviewed; Journal article, 2023)The droplet impact process on a solid surface is divided into a spreading phase where the droplet reaches the maximum deformation followed by a retracting phase. However, in the case of surfaces with high contact angle ... -
Release and Spreading of Dense Gases: Turbulence modeling with Kameleon FireEx
(Master thesis, 2011)A dense gas released into the atmosphere will have a flow development that can be described by a large range of physical scales and quantities. An instantaneous release will slump towards the ground unaffcted by the wind, ... -
Remarks on cosmological bulk viscosity in different epochs
(Peer reviewed; Journal article, 2020)The intention of this paper is mainly two-fold. First, we point out a striking numerical agreement between the bulk viscosity in the lepton era calculated by Husdal (2016) and our own calculations of the present-day bulk ... -
Remarks on the Abraham-Minkowski problem, from the formal and from the experimental side
(Peer reviewed; Journal article, 2021)We analyze the Abraham–Minkowski problem known from classical electrodynamics from two different perspectives. First, we follow a formal approach, implying use of manifolds with curved space sections in accordance with ... -
Removing halide ions from sulfate solutions by anion exchange membranes in electrodialysis process: Recent advances, challenges, and prospects
(Journal article; Peer reviewed, 2024)Removing halide ions from wastewater and industrial effluents is crucial to eliminating their potential risks to human health, ecosystems, and industrial operations. However, conventional techniques for this process are ... -
Renewable district heating using borehole heat exchange unit with CO2 heat pump
(Master thesis, 2022)Kina og Norge ønsker å være ledende innenfor fornybar energi-teknologi og forsker derfor på måter hvor de kan utvikle bedre og mer miljøvennlige systemer som kan redusere bruken av strøm og fossile brensler for oppvarmingsformål. ... -
Research on the Policy Evolution of China’s New Energy Vehicles Industry
(Peer reviewed; Journal article, 2020)China has formulated a series of industrial policies dedicated to the sustainable development of new energy vehicles (NEVs). Researching China’s NEVs industry policy system, particularly its staged evolution characteristics ... -
Residential CO2 Heat Pump System for Combined Space Heating and Hot Water Heating
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:53, Doctoral thesis, 2004)Carbon dioxide (CO2, R-744) has been identified as a promising alternative to conventional working fluids in a number of applications due to its favourable environmental and thermophysical properties. Previous work on ... -
Resource efficiency and life cycle environmental impacts of biogas production at Greve Biogass - Ressurseffektivitet og livsløps miljøpåvirkning av biogassproduksjon ved Greve Biogass
(Master thesis, 2015)In Norway, the municipalities are obligated to contribute to the reduction of greenhouse gas emissions as well as to a transition towards green energy. Biogas production based on manure, sewage sludge and different types ... -
Resource efficiency and life cycle environmental impacts of biogas production from sewage sludge and organic substrates in Bergen - Ressurseffektivitet og livsløps miljøpåvirkning av biogassproduksjon fra avløpsslam og organiske substrater i Bergen
(Master thesis, 2015)Background, Aims and Scope. This study bases itself on the completion of a biogas plant in Rådalen, Bergen, currently under construction. The reason for the construction of the plant is the mandatory secondary cleaning at ... -
Resource footprints and their ecosystem consequences
(Journal article; Peer reviewed, 2017)A meaningful environmental impact analysis should go beyond the accounting of pressures from resource use and actually assess how resource demand affects ecosystems. The various currently available footprints of nations ... -
The response of an axisymmetric jet placed at various positions in a standing wave
(Peer reviewed; Journal article, 2021)The hydrodynamic response of an axisymmetric jet placed at various positions in a standing wave oriented normally to the jet is investigated. At the velocity and pressure nodes the axisymmetric (m=0) and first azimuthal ... -
Response of Autoignition-Stabilized Flames to One-Dimensional Disturbances: Intrinsic Response
(Peer reviewed; Journal article, 2021)Burning carbon-free fuels such as hydrogen in gas turbines promises power generation with strongly reduced greenhouse gas emissions. A two-stage combustor architecture with a propagation-stabilized flame in the first stage ... -
The response of terrestrial ecosystem carbon cycling under different aerosol-based radiation management geoengineering
(Peer reviewed; Journal article, 2021)Geoengineering has been discussed as a potential option to offset the global impacts of anthropogenic climate change and at the same time reach the global temperature targets of the Paris Agreement. Before any implementation ... -
Response of the temporal turbulent boundary layer to decaying free-stream turbulence
(Peer reviewed; Journal article, 2020)The turbulent boundary layer developing under a turbulence-laden free stream isnumerically investigated using the temporal boundary layer framework. This studyfocuses on the interaction between the ... -
Retrieval operations of derelict fishing gears give insight on the impact on marine life
(Peer reviewed; Journal article, 2024)Abandoned, lost and discarded fishing gear (ALDFG), significantly impacts marine ecosystems and biodiversity by incidental capture known as ghost fishing. Such impacts were quantified during the Norwegian Directorate of ... -
Retrofitting of Norwegian Office Buildings towards Nearly Zero Energy-Technical, Environmental, and Economic Aspects
(Doctoral theses at NTNU;2021:403, Doctoral thesis, 2021)The increasing proportion of energy use for buildings in urban environments has necessitated energy efficiency and advancement of the sustainable transformation of building stock towards the zero energy/emission level. In ... -
Revenue-Weighted Life Cycle Assessment of two Nordic Energy companies - Exploring a simplification of Organizational LCA as a proxy for Organizational Impact through comparisons with company sustainability reports and third-party impact data
(Master thesis, 2023)Nøyaktige og sammenlignbare organisasjons impact data som er håndterbare å beregne er avgjørende for at organisasjoner skal kartlegge og redusere deres impact. Rammeverk for Organisatorisk livsløpsanalyse (O-LCA) har ...