Blar i Institutt for energi og prosessteknikk på tittel
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Sediment Erosion in Hydro turbines
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:104, Doctoral thesis, 2010)Sediment erosion is caused by the dynamic action of sediment flowing along with water impacting against a solid surface. Hydraulic turbine components operating in sediment-laden water are subject to abrasive and erosive ... -
Sediment erosion in the labyrinths of Francis turbine: A numerical study
(Peer reviewed; Journal article, 2022)Development of new hydropower projects in Himalayan regions aims for the efficient performance of the turbine with lesser operation and maintenance cost. Over the past two decades, significant efforts have been made to ... -
Seebeck coefficients of cells with lithium carbonate and gas electrodes
(Journal article; Peer reviewed, 2015)The Seebeck coefficient is reported for thermoelectric cells with gas electrodes and a molten electrolyte of one salt, lithium carbonate, at an average temperature of 750 °C. We show that the coefficient, which is 0.88 mV ... -
Seeking minimum entropy production for a tree-like flow-field in a fuel cell
(Peer reviewed; Journal article, 2020)Common for tree-shaped, space-filling flow-field plates in polymer electrolyte fuel cells is their ability to distribute reactants uniformly across the membrane area, thereby avoiding excess concentration polarization or ... -
Selecting the model and influencing variables for DHW heat use prediction in hotels in Norway
(Peer reviewed; Journal article, 2020)Domestic hot water heat use prediction modelling is an important instrument for increasing energy efficiency in many buildings. This article addressed hourly domestic hot water heat use prediction, using a Norwegian hotel ... -
Selection and design of post-combustion CO2 capture process for 600 MW natural gas fueled thermal power plant based on operability
(Journal article, 2017)Post-combustion CO2 capture (PCC) plant for a typical 600 MW natural gas fueled thermal power plant was designed as a trade-off between operability and mitigation of the efficiency penalty. Two modified PCC plant configurations ... -
Selection of Design Parameters Based On Economic Evaluation Of Offshore Combined Cycles
(Master thesis, 2012)Abstract:As of Jan 1 2011,as per The Oil and Gas Journal (OGJ) Norway had 567 billion barrels of proven reserves most of which are located in the Norwegian continental shelf offshore, Apart from oil Norway is also a major ... -
Selective recovery of silver from copper impurities by electrodialysis: Tailoring monovalent selective cation exchange membranes by monomolecular layer deposition
(Peer reviewed; Journal article, 2023)Selective recovery of silver from secondary resources enriched with copper impurities is a well-known challenge but is urgently needed by the industry. This study addresses the challenge by developing a highly efficient ... -
Selective recovery of silver ions from copper-contaminated effluents using electrodialysis
(Journal article; Peer reviewed, 2024)With the growing demand for silver, the recycling of this precious metal from secondary sources has become imperative. However, the presence of copper impurities poses a significant challenge. This study aims to explore ... -
Self-excited longitudinal and azimuthal modes in a pressurised annular combustor
(Peer reviewed; Journal article, 2020)A new laboratory scale pressurised annular combustion experiment is introduced and used to generate selfexcited longitudinal and azimuthal instabilities. The experiments are operated at mean pressuresranging from approximately ... -
Self-preserving ice layers on CO2 clathrate particles: Implications for Enceladus, Pluto, and similar ocean worlds
(Peer reviewed; Journal article, 2021)Context. Gas hydrates can be stabilised outside their window of thermodynamic stability by the formation of an ice layer – a phenomenon termed self-preservation. This can lead to a positive buoyancy for clathrate particles ... -
Self-regulating oil based heat storage
(Master thesis, 2018)This paper has investigated the possibility of storing excess energy from solar systems as heat, using sunflower oil as the heat storage medium and heat transfer fluid. Three subsystems were designed to heat, store and ... -
Self-standing heterostructured NiCx-NiFe-NC/biochar as a highly efficient cathode for lithium–oxygen batteries
(Peer reviewed; Journal article, 2020)Lithium–oxygen batteries have attracted research attention due to their low cost and high theoretical capacity. Developing inexpensive and highly efficient cathode materials without using noble metal-based catalysts is ... -
Sensing as the key to battery lifetime and sustainability
(Peer reviewed; Journal article, 2022)Recent economic and productivity gains of rechargeable batteries have cemented their dominance in energy-intensive societies. With demand soaring, enhancing battery performance through continuous monitoring is essential ... -
Sensitivity analysis of parameters influencing the carbon footprint of Brazilian office buildings
(Master thesis, 2020)Energy and material use associated with buildings causes significant environmental impacts which need to be urgently reduced, especially in emerging economies such as Brazil, whose building stock is expected to significantly ... -
Sensitivity Analysis of Proposed LNG liquefaction Processes for LNG FPSO
(Master thesis, 2011)The four liquefaction processes proposed as a good candidate for LNG FPSO are simulated and evaluated. These processes include a single mixed refrigerant (SMR), dual mixed refrigerant (DMR), Niche LNG ( CH4 and N2 process) ... -
Sensitivity and future exposure of ecosystem services to climate change on the Tibetan Plateau of China
(Peer reviewed; Journal article, 2021)Context Climate change has imposed tremendous impacts on ecosystem services. Recent attempts to quantify such impacts mainly focused on a basin or larger scale, or used limited time periods that largely ignore observations ... -
Sensitivity of the Rayleigh criterion in thermoacoustics
(Peer reviewed; Journal article, 2020)Thermoacoustic instabilities are one of the most challenging problems faced by gas turbine and rocket motor manufacturers. The key instability mechanism is described by the Rayleigh criterion. The Rayleigh criterion does ... -
Separation Friendly Produced Water Pumps
(Doctoral thesis at NTNU;2016:263, Doctoral thesis, 2016)Produced water is the largest by-product of the oil and gas industry and its handling represents an important challenge. The fluid is mainly constituted by water, but its high content of sand, salt, sediments and especially ... -
Separation of Gas from Liquids in Viscous Systems
(Master thesis, 2009)Increased knowledge of the degassing process in separation of gas from oil is important in connection with development of subsea separation and boosting units for heavy oil fields. The focus in the thesis is on theory and ...