Browsing Institutt for energi og prosessteknikk by Title
Now showing items 6-25 of 4249
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A 7-field Lagrangian slug capturing and slug tracking model with higher order methods
(Doctoral theses at NTNU;2017:246, Doctoral thesis, 2017)In this thesis, a 7-field Lagrangian slug capturing and slug tracking model with higher order methods and an adaptive grid is investigated for predicting the behaviour of two-phase gasliquid flow in multiphase flow pipelines. ... -
A Building Information Model (BIM) Based Lifecycle Assessment of a University Hospital Building Built to Passive House Standards
(Master thesis, 2012)This thesis undertook a whole building lifecycle assessment of a university hospital building in Trondheim, Norway designed to passive house standards. The delivered energy for electricity and heating was estimated to be ... -
A cartesian cut-cell method, based on formal volume averaging of mass, momentum equations
(Chapter, 2017)Simulation of multiphase flows are generally treated by various classes of Eulerian methods, Lagrangian methods and various combinations of these. In the SIMCOFLOW initiative we have set out to develop a framework for ... -
A case study of life cycle impacts of small-scale fishing techniques in Thailand
(Journal article; Peer reviewed, 2017)Fish provides an important source of protein, especially in developing countries, and the amounts of fish consumed are increasing worldwide (mostly from aquaculture). More than half of all marine fish are caught by small-scale ... -
A CFD analysis for the performance assessment of a novel design of plates-in-tank latent storage unit for freezing applications
(Chapter, 2019)In this paper, the charging and discharging processes of a recently developed cold thermal energy storage (CTES) unit integrated into a poultry processing plant is investigated. A mathematical model of the CTES was created ... -
A CFD-model of the Fluid Flow in a Hydrogen Peroxide Monopropellant Rocket Engine in ANSYS Fluent 16.2
(Master thesis, 2016)The use of hydrazine in monopropellant thrusters has dominated the market for several decades. Due to the toxic nature of hydrazine, the interest in developing thrusters based on green propellants has increased. A common ... -
A comparative Analysis of Propane and Ethylene Glycol as Intermediate Fluid in a LNG Regasification System
(Master thesis, 2015)A LNG regasification system with intermediate fluid vaporizer is studied. Two different intermediate fluids (IF), propane and a mix of mono-ethylene glycol and water, are compared for use in the system. The regasification ... -
A Comparative Life Cycle Assessment of PV Solar Systems
(Master thesis, 2013)In this report, a comparative life cycle assessment (LCA) of a rooftop, grid-connected photovoltaic (PV) system has been conducted. The primary objective has been to assess the environmental impacts resulting from the PV ... -
A Comparative Life Cycle Assessment of SpillTech Waterborne Plastic Waste Removal Systems
(Master thesis, 2022)I flere tiår har plast vært et uvurderlig materiale da verden kastet seg mot modernitet i en enestående hastighet. På grunn av end-of-life (EOL) miljøpåvirkninger av disse langlivede polymerene, har de blitt en gjennomgripende ... -
A comparative study of energy certification systems for buildings
(Master thesis, 2014)Due to the large amount of energy consumption in buildings and the biggest potential of energy and ecology savings, energy efficiency and sustainable construction represent the priorities of modern architecture and energetics ... -
A comparative study of the velocity and vorticity structure in pipes and boundary layers at friction Reynolds numbers up to 10^4
(Journal article; Peer reviewed, 2019)This study presents findings from a first-of-its-kind measurement campaign that includes simultaneous measurements of the full velocity and vorticity vectors in both pipe and boundary layer flows under matched spatial ... -
A comparison of lab-scale free rotating wind turbines and actuator disks
(Master thesis, 2020)Planar particle image velocimetry ble gjennomført oppstrøms og i den nærliggende vaken til en roterende vindturbinmodell i laboratorieskala og aktuatordisker av samme dimensjon i en vindtunell. Den innkommende strømningen ... -
A Comparison of Post-combustion Capture Technologies for the NGCC
(Journal article; Peer reviewed, 2017)Four different post-combustion capture technologies are compared for the same NGCC (electric efficiency 58.1% without CO2 capture). The technologies are aqueous amine, polymeric membranes, a low temperature sorbent and ... -
A comprehensive model for char particle conversion in environments containing O2 and CO2
(Journal article; Peer reviewed, 2015)In this work, conversion of char is studied in a simulation code that includes a simplified heterogeneous adsorption–desorption reaction mechanism for char chemical reactivity and uses GRI-Mech 3.0 as the chemical kinetic ... -
A comprehensive recipe calculator for evaluating multiple environmental impact categories – A first prototype
(Master thesis, 2024)Dette studiet presenterer utviklingen av DELI Calculator, den første prototypen for utregning av miljøpåvirkningen til matoppskrifter. Gjennom automatiserte programsnutter i Python kan brukeren oppgi ingrediensene til ... -
A Comprehensive Thermal and Structural Transient Analysis of a Boiler’s Steam Outlet Header by Means of a Dedicated Algorithm and FEM Simulation
(Journal article; Peer reviewed, 2020)Increasing the share of renewables in energy markets influences the daily operation of thermal power units. High capacity power units are more frequently operated to balance power grids and, thus, steam boilers are exposed ... -
A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model
(Journal article; Peer reviewed, 2019)The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ... -
A Coupled Battery Production and Life Cycle Inventory (LCI) Model
(Master thesis, 2021)I et forsøk på å overkomme de stadig mer uunngåelige utfordringene som følge av klimaforandringene, må den globale transportsektoren gjennomgå store endringer de neste tiårene. Elektrifisering av kjøretøy blir sett på som ... -
A data-driven approach to analyse embodied emissions from buildings in the context of LCA of Zero Emission Neighbourhoods
(Master thesis, 2021)The building sector is responsible for more than one-third of the global GHG emissions and consequently, climate change. As the result of the Paris agreement and the initiatives for reducing GHG emissions, the building ... -
A Detached-Eddy-Simulation study: Proper-Orthogonal-Decomposition of the wake flow behind a model wind turbine
(Journal article; Peer reviewed, 2018)In times of intense renewable energy development, the planning of wind farms and the improvement of their total efficiency has become a major field of research. A precise analysis of the velocity deficit, fluctuation load ...