Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 52 for “"Energy Extraction"”.
-
Wave Energy Extraction from buoys
Different types of Wave Energy Converters currently tested or under development are using the vertical movement of floating bodies to generate electricity. For commercial applications, arrays have to be considered in order to produce a significant power. In this thesis, we investigate the …
-
Wave Energy Extraction and Coastal Protection
… and efforts related to a growing marine energy conversion sector, this study presents work aimed to enhance the understanding of wave resource characterisation for high and medium energy sites in Scottish waters.<br/>Results obtained through numerous field data campaigns over a 7 year …
-
Experimental studies of flapping foils for energy extraction
… has shown their ability to efficiently extract energy from both steady and unsteady flows. Our research uses this previous work as motivation for experimentally examining the hydrodynamic performance of flapping foils to extract energy in a two-dimensional flow. We focused on identifying the …
-
Power processing and active protection for photovoltaic energy extraction
… generation is a promising clean and renewable energy technology that can draw upon the planet's most abundant power source - the sun. However, relatively high levelized cost of energy (LCOE), the ratio of the total cost of ownership to the total energy extracted over the lifetime of the …
-
Optimal configuration of large arrays of floating bodies for ocean wave energy extraction
Ocean wave energy is a large, and mostly untapped potential source of renewable energy worldwide. The scope of engineering solutions for harvesting wave energy is vast, ranging from wave-induced oscillating bodies, to overtopping devices and oscillating water columns. One particularly interesting …
-
Characterization of cochlear transcription, translation and energy extraction in aging and noise-induced pathology
… gradient of the organ. The useful energy extracted from this "biological battery" was used to power a combined microchip/radio transmitter capable of performing voltage-sensing operations within endolymph and wirelessly relaying this information to an external receiver. This study …
-
Numerical Study in Wind Energy Extraction from Controlled Limit-Cycle Oscillations in Modified Glauert Airfoil
<p>Typically, wind energy harvesting technology employs wind turbines. Towards the goal of meeting increasing energy needs with renewable energy sources a novel wind energy harvesting scheme is considered, utilizing a modified Glauert (MG) airfoil experiencing aeroelastic limit cycle oscillation …
-
Application of the Finite Element Method to Solve Coupled Multiphysics Problems for Subsurface Energy Extraction
… as an alternative option. To improve the heat extraction from closed-loop wells, this research study in chapter 4 suggests highly conductive hydraulic fractures for CLGS to improve heat extraction rate. The results suggest that fractures significantly improve thermal power and cumulative …
-
Numerical study of downhole heat exchanger concept in geothermal energy extraction from saturated and fractured reservoirs
Geothermal energy has gained a lot of attention recently due to several favorable aspects such as ubiquitously distributed, renewable, low emission resources while leveraging the advances in the associated technologies such as directional drilling and low enthalpy power generation plant. However, …
-
Numerical simulation and optimization of cyclic and continuous fluid injection for geothermal energy recovery
Geothermal energy is a viable solution for reducing greenhouse gas emissions and mitigating climate change. It has a wide geographic distribution, requires little exploration and operation costs, and has virtually no carbon emissions. This renewable energy source can generate electricity, provide …
-
Advanced controls for floating wind turbines
… spearhead the rapid growth of the offshore wind energy sector and allow the exploration of vast high quality wind resources over coastal and offshore areas with intermediate and large water depths. This generates the need for a new generation of Wind Turbine control systems that take into account …
-
An assessment of tidal energy and the environmental response to extraction at a site in the Pentland Firth
… the potential environmental consequences of its extraction. This thesis explores tidal stream energy in the Pentland Firth (Scotland, UK). This channel contains some of the most promising tidal stream energy sites in the world and is set to become<br/>host to the first large-scale arrays of tidal …
-
Hydrodynamic and economic modelling of tidal current energy conversion systems.
… to the development of the tidal current energy industry, against the background of increasing commercial, government, academic and public interest. It does this through the practical application of a number of computational techniques in the areas of: 1. Tidal current analysis and …
-
Synergistic diffuser/heat-exchanger design
… pressure-recovery, viscous losses and thermal energy extraction sensitivities to cooling and annular blade geometry variations. Results show promising diffusion and heat-transfer capabilities that match or surpass current design performance. Proposed configurations are outlined based on these …
-
Modelling and Control of Tubular Linear Generators for Wave-Power Applications
… key factors for economic operation of wave energy converters out at sea. Linear generators are a relatively new technology, as is their application to the field of wave-power energy extraction. The literature on the modelling and control of linear generators thereby naturally lags behind …
-
Estimating atmospheric boundary layer turbulence in the marine environment using lidar systems with applications for offshore wind energy
… fields, but of particular importance to the wind energy industry. Contributing to both the efficiency of energy extraction and the life-cycle cost of the turbine itself, turbulence in the atmospheric boundary layer is estimated within the wind energy industry as Turbulence Intensity (TI) and more …
-
Modeling and maximizing power in wind turbine arrays
… axial induction factors that optimize overall energy extraction. Large wind turbine arrays, or wind farms, can be viewed as large coupled networks, for which the application of traditional optimization techniques are impractical. A brief discussion on wind farm models and traditional …
-
Adaptive Composite Blades for Horizontal Axis Tidal Turbines
The oceans are a huge resource of untapped energy. There are many marine renewable energy sources however tidal energy has the advantage of being highly predictable. The range of devices for tidal energy extraction is extensive with power being generated either by extracting potential or kinetic …
-
The application of high temperature superconducting materials to power switches
… in superconducting magnet systems that require energy extraction. Such superconducting switches could be bypass-switches that are operated in conjunction with a parallel resistor or dump-switches where all of the energy is dissipated in the switch itself. Bypass-switches are more suited to …
-
A systems analysis of solar power potential in coming decades
Energy is a very important aspect of human life. In the past few centuries, energy consumption has increased dramatically to a point where humans are very much dependant of energy. Under the current nonrenewable energy extraction technique of burning fossil fuels there are many externalities that …
Page 1 of 3