Blar i Institutt for energi og prosessteknikk på tittel
Viser treff 3023-3042 av 4249
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Parallel Work of CO2 Ejectors Installed in a Multi-Ejector Module of Refrigeration System
(Journal article; Peer reviewed, 2016)A performance analysis on of fixed ejectors installed in a multi-ejector module in a CO2 refrigeration system is presented in this study. The serial and the parallel work of four fixed-geometry units that compose the ... -
Parameter based tool for Francis turbine guide vanes design using coupled MATLAB-ANSYS approach
(Peer reviewed; Journal article, 2022)The complex geometry of Francis turbine components can be defined parametrically so that automatic optimization techniques based on parametrization can be used. This is convenient for a hydraulic redesign of individual ... -
Parameter study of electric power production in wind farms - experiments using two model scale wind turbines
(Master thesis, 2015)Wind farms are widely developed even if several unsolved problems need to be faced. The rotor-wake interaction involves different physical phenomena, not yet fully understood, directly affecting the overall wind farm power ... -
Parameter study of electric power production in wind farms - experiments using two model scale wind turbines
(Master thesis, 2014)A parameter study investigating the effects of adjusting tip speed ratios (TSR) and turbine distance in a model scale wind farm was conducted in the wind tunnel facility at NTNU. The aim was to identify optimal turbine ... -
Parameter study of electric power production in wind farms - experiments using two model scale wind turbines
(Master thesis, 2015)Wind farms are widely developed even if several unsolved problems need to be faced. The rotor wake interaction involves different physical phenomena, not yet fully understood, directly affecting the overall wind farm power ... -
Parameter study of electric power production in wind farms - experiments using two model scale wind turbines
(Master thesis, 2014)During the last years the growing amount of a wind turbines was observed, but limited area requires to build them closer to each other or group them in clusters called wind farms. Interactions between the turbines have ... -
Parameter study of power production in wind farms - experimental investigation of interaction of two wind turbines in tandem array
(Master thesis, 2015)The main goal of this experimental study was to find criteria for optimum total power productions of a tandem array of turbines in a "small" wind farm. Experiment included testing of two models of wind turbines (HAWT) in ... -
Parameters relevance in data-driven models for building energy prediction
(Master thesis, 2021)Bygninger står for 40 % av verdens energiforbruk, og 36 % av drivhus gassene. En stor andel av denne energien er knyttet til bygninger, mer spesifikt, systemer for varme, ventilasjon, og kjøling (HVAC). Intelligente systemer, ... -
Parametric Energy Simulations of a Nordic Detached House Heated by a Wood Stove
(Peer reviewed; Journal article, 2020)Wood stoves are widely used in Nordic countries. They offer a good opportunity to use biomass for space-heating and to reduce the peak power of all-electric buildings. However, wood stoves are highly concentrated heat ... -
Parametric LCA Modelling of Battery Materials - The case of Graphene
(Master thesis, 2021)I dag blir det gjort betydelige investeringer i nye batteriteknologier med fokus på fornybar energi. Foreløpig er Li-S batterier ansett som den mest lovende etterfølgeren for Li-ion, da disse representerer flere fordeler. ... -
Parametric Life Cycle Modelling of Nickel Sulphate
(Master thesis, 2021)Constant growth of population is raising the energy demand as well as the environmental impacts and emissions from the use of this energy. To reduce these impacts and emissions, and to conform to the international ... -
Parametric Optimization of a Power and Biomass to Liquid Process
(Chapter, 2019)In this study, a power & biomass to liquid process (PBtL) is optimized with respect to nine continuous design variables. These variables have great impact on the profitability of the process. A detailed process model is ... -
Parametric study of condensation at heating, ventilation, and air-conditioning duct's external surface
(Journal article; Peer reviewed, 2018)The compression of insulation causes around a heating, ventilation, and air-conditioning duct usually resulted in dew formation around the outer surfaces because of low temperature, which causes significant energy and ... -
Parametric study of low-temperature thermal energy storage using carbon dioxide as the phase change material in pillow plate heat exchangers
(Peer reviewed; Journal article, 2023)Industrial low-temperature freezing applications are often batch processes, requiring a lot of energy, exerting stress on the electrical grid. To relieve this stress, thermal energy storage can be used. However, there is ... -
Part load performance of PEM fuel cell and electrolyser stacks in hybrid energy system for offshore application
(Chapter, 2022)Global warming and associated climate change are ongoing processes worldwide, behind which anthropogenic greenhouse gas emissions play the main role. Renewable energy sources integrated in hybrid energy systems (HES) are ... -
A part-load analysis and control strategies for the Graz Cycle
(Peer reviewed; Journal article, 2022)Carbon capture and storage (CCS) plays a uniquely important role in the future clean and dispatchable power generation portfolio to achieve the ambitious goals set at COP21. The Graz Cycle, a zero emission oxy-combustion ... -
Part-load efficiency boost in offshore organic Rankine cycles with a cooling water flow rate control strategy
(Peer reviewed; Journal article, 2022)Global concerns regarding greenhouse gas emissions and global warming have necessitated the speed up in using renewable energies and more efficient use of fossil fuels in the oil and gas industry. Harvesting gas turbine ... -
Part-load thermal efficiency enhancement in gas turbine combined cycles by exhaust gas recirculation
(Peer reviewed; Journal article, 2024)Gas turbine power plants are popular for offshore power generation due to high power density and their reliability. However, growing usage of renewable energies put gas turbines in a load following backup operation. These ... -
Particle Deposition From Geothermal Supercritical Steam
(Master thesis, 2021)Varmeutvinning fra dype varme geotermiske brønner kan føre til en størrelsesorden høyere effekt sammenlignet med konvensjonelle geotermiske brønner (Fridleifsson et al. 2003). Et slikt energipotensial kan imidlertid ikke ...