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.
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Showing 1 to 17 of 17 for “"storage of energy"”.
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Hydrogen storage of energy for small power supply systems
… for cell phone base stations using hydrogen energy storage, fuel cells or hydrogen-burning generators, and a backup generator could offer an improvement over current power supply systems. Two categories of hydrogen-based power systems were analyzed: Wind-hydrogen systems and peak-shaving …
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Estocagem por estratificação térmica de líquido em reservatório
Storage of energy using the thermal stratification of a liquid in a tank, is a present theme of research and deve lopment, because i ts enormous applicability; Considering the energy conservation equations, it is proposed a transient one-dimensional semi-empirical model to the storage system, …
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The Maladaptive Response of Adipose Tissue to High Fat Diet Feeding
The ability of organisms, from yeast to humans, to safely store energy as dense hydrophobic carbon chains secured away in lipid droplets represents an incredible evolutionary advantage. The further use of adipocytes as a professional lipid storage cells emphasizes the importance and benefit of safe …
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MANAGING CRYOGENIC ENERGY FLUID STORAGE AND TRANSFER OPERATIONS
As cleaner and renewable energy sources gain traction, the transportation and storage of energy fluids are gaining increasing importantance. To tackle the complexities in these systems, we developed an advanced mathematical model that employs a novel, adaptive, stretchable, and spatially moving …
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Radiation damage quantification in elemental copper using Wigner energy storage
… and preventing such failures. The current unit of radiation damage, displacements per atom (DPA), is not a measurable quantity, and it is known to be an inaccurate measure of radiation damage. This project aims to quantify radiation damage accurately and measurably by characterizing the storage …
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Efficient control of series elastic actuators through the exploitation of resonant modes
… loadings. The spring can also be used to store energy similar to the way animals use their tendons during locomotory tasks. This thesis shows that by operating the actuators at the appropriate frequency, the storage of energy by the springs can be translated into large efficiency gains for the …
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Mechanistic studies of magnesium electrodeposition and oxygen reduction for energy storage applications
Energy storage research is critical for advancing the world’s energy storage technologies in order to meet the needs of the future generations. Global warming due to CO2 production and diminishing reserves of fossil fuels necessitate a transition to intermittent renewable energy production. …
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Microstructure-based modeling of damage and healing in salt rock with application to geological storage
Most mineral and energy resources such as ore, petroleum, natural gas, and geothermal energy are recovered from the earth. Nuclear waste repositories and CO2 storage systems are buried underground. Recovery of mineral resources, storage of energy, and disposal of waste involve changes in coupled …
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The stress and strain behavior of materials for energy storage and production
The complex structural dynamics of materials systems involved in the production and storage of energy are examined in order to provide insight into the understanding and design of more effective systems. Within this dissertation, two categories of electrochemical systems are explored in the context …
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Novel carbon materials with hierarchical porosity : templating strategies and advanced characterization
The aim of this work was the generation of carbon materials with high surface area, exhibiting a hierarchical pore system in the macro- and mesorange. Such a pore system facilitates the transport through the material and enhances the interaction with the carbon matrix (macropores are pores with …
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Machine Learning for Phonon Thermal Transport
Efficient generation, transport, conversion, and storage of energy are essential to support our modern society and combat global climate change. As one of the major energy carriers, phonons play an indispensable role in various energy-related processes. The past decades witnessed continuous …
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Designing Electrolytes for Durable and Fast-Charging Alkali-Ion Batteries
Energy is one of the most fundamental topics in human development. The production, transfer, and storage of energy are integrated into every aspect of modern life. Traditionally, energy has been derived from fossil fuels. While fossil fuels have fueled economic growth for centuries, they have …
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Design of Latent Thermal Energy Storage Systems
<p>This dissertation documents the results of a theoretical and numerical study of time dependent storage of energy by melting a phase change material. The heating is provided along invading lines, which change from single-line invasion to tree-shaped invasion. Chapter 2 identifies the special …
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Optimal energy use in mobile applications with storage
… demands and dwindling resources, the need for energy efficiency is being felt in all sectors. The transportation sector is one of the largest consumers of energy and to reduce fuel consumption and greenhouse gas emissions, hybrid mobile power systems are seeing increased use. A hybrid mobile …
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Generátor napěťových impulsů vysoké úrovně
Tato práce se zabývá problematikou generování napěťových impulsů vysoké úrovně. V rámci práce jsou nejprve popsány tvary jednotlivých impulsů, dále je znázorněno blokové schéma generátoru napěťových impulsů a v teoretickém rozboru jsou teoreticky rozebrány možnosti řešení jednotlivých bloků.
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Charged domain wall phenomena and associated negative capacitance in boracites
… inroads into our lives under the guise of invaluable technologies such as data storage and nanoelectronics. These technologies typically rely on ferroelectric domains, that is, macroscopic regions of uniformly oriented dipole moments within the crystal. Over the past decade, however, …
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Synthesis of redox-active ligands and their use in hydrogenase modeling
… acidic aqueous conditions), and the combustion of hydrogen with air yields water as a byproduct, rather than carbon based wastes (C, CO, CO2, etc.). Thus the storage of energy in the form of hydrogen is a desirable goal. Nature uses the enzymatic system of hydrogenases (H2ases) to reversibly …