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 20 of 61 for “"thermal characteristics"”.
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Electromagnetic-thermal Characteristics of Conductor on Round Core (CORC) Cables
… out exhaustive research on the electromagnetic-thermal characteristics of CORC cables, and a charging method for a CORC magnet is proposed. After a brief description of superconductivity fundamentals, the thesis starts with introducing HTS-CCs, the components of CORC cables. The thermal quench …
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Influence of Polyolefin Contamination on the Thermal Characteristics of Bottle Grade Recycled Polyethylene Terephthalate
… recycled with PET bottles and affect the final characteristics of the recyclate. The effect of this cross contamination and the influence of polyolefin contamination on the overall characteristics of bottle grade recycled PET, especially the thermal characteristics with emphasis on …
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Optical and thermal characteristics of thin polymer and polhedral oligomeric silsesquioxane (POSS) filled polymer films
… constants of thin films, but can also detect thermally induced structural changes like surface glass transition temperatures (Tg) and layer deformation in LB-films. Understanding the thermal properties of the polymer thin films is crucial for designing nanoscale coatings, where thermal …
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Oscillating Heat Flow From the Pinna of the Ear of the Rabbit (Oryctolagus Cuniculus)
… infrared (IR) thermography, which measures the thermal characteristics of the pinna more accurately than the standard method of measuring pinna temperature with a thermocouple. Heat flow from the pinna was found to oscillate.
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Experimental and Analytical Investigation of the Transient Thermal Response of Air Cooled Data Centers
… work investigates the transient response of the thermal environment in air cooled data centers through experiments, analytical and computational tools. The key thermal characteristics of the various data center components were extracted from a set of experiments. This includes the development of …
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Tempest: A Framework for High Performance Thermal-Aware Distributed Computing
… than ever before. This results in increased thermal dissipation, the need for powerful cooling systems, and ultimately a reduction in system reliability as temperatures increase. Over the past several years, the research community has reacted to this problem by producing software tools such …
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Development of Bi-Directional Module using Wafer-Bonded Chips
Double-sided module exhibits electrical and thermal characteristics that are superior to wire-bonded counterpart. Such structure, however, induces more than twice the thermo-mechanical stress in a single-layer structure. Compressive posts have been developed and integrated into the double-sided …
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Selective criteria in Werner clathrates
… nuclear magnetic resonance spectroscopy. The thermal characteristics of the compounds were analysed by thermogravimetric analysis and differen.tial thermal analysis. The structures of two related compounds [Ni(NCS)2(Py)4] and [Ni(NCS)2(Py)4].nbenzene were also studied.
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Thermal management in GaAs/AlGaAs laser diode structures
… readers and optical storage devices. However, thermal characteristics have been a deterring factor for their greater use. Hence, investigating thermal management in laser diode structures becomes an important and interesting study for current and future laser applications. In this research, …
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The Ground thermal regime with special reference to the occurrence of permafrost
This thesis deals with the ground thermal regime and specific reference is made to the occurrence of Permafrost.Consideration is given to the thermal characteristics of soils in that various methods for determining the specific heat and the thermal conductivity of soils are reviewed. The methods …
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Evaluation of the thermal environment in large manufacturing plants
… plant, to develop a method to study thermal performance of large industrial buildings through physical measurements and numerical simulations, to profile the thermal characteristics of such a factory. Plant environment data was logged and analysed, by various systems and different …
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Hydrostatic machine tool spindles
… are then applied to predicting the load carrying characteristics of several different types of hydrostatic bearings. The bearing calculations are then integrated with shaft bending calculations to predict static spindle stiffness. Relations are also presented to calculate the frictional and …
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Transforming an existing facility into an Energy Plus building
… into an Energy Plus Building by improving the thermal characteristics of the building, replacing an outdated HVAC system with a ground source Geothermal heat pump, implementing a Wi-Fi enabled programmable thermostat to control temperature set points, and installing additional solar panels on …
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Estimating the upper ocean vertical temperature structure from surface temperature as applied to the southern Benguela
… planners. The hypothesis in this thesis is that thermal characteristics of the water column in the southern Benguela can be numerically modeled and deduced from a single Sea Surface Temperature (SST) value, if provided with sufficient historic temperature-depth profiles for that region. For …
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Detail of the thermal structure of oceanic fronts in the Southern ocean south of Africa
This investigation addresses the thermal characteristics of the major oceanic frontal systems in the Southern Ocean south of Africa based on data collected to a depth of 500 m on forty-three cruises during a fifteen year period. The width of the Agulhas Front has been shown to vary considerably in …
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Hybrid materials for flexible, transparent electrodes
… were not compromised by mechanical testing. The thermal performances were also determined and the addition of graphene improved the thermal resistivity of the heater on PET by 18.7%. The hybrid was assessed under ON/OFF and long period testing for future application prospect. The heater passed …
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Behavior of FRP reinforced and partially prestressed concrete members under the effects of temperature gradients
… experimental investigation into the effects of thermal characteristics of different types of FRP on the development of thermal stresses and on the control of thermal cracking in reinforced concrete (RC) and partially prestressed concrete (PPC) beams. A total of eleven RC and PPC beams using FRP …
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Structure and reactivity of diol host-guest compounds
… was studied by X-ray powder diffraction. The thermal characteristics of the compounds were studied using thermogravimetric analysis and differential scanning calorimetry. Guest desorption from three of the four compounds occurred in a single step whereupon the host framework collapsed back to …
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DESIGN OF A LOW-COST PORTABLE HANDHELD SPECTROMETER FOR AEROSOL OPTICAL DEPTH MEASUREMENTS
… terms of its spectral resolution, sensitivity, thermal characteristics, and stability. Finally, after successful performance characterization, the capabilities of the instrument for field measurements are explored by taking direct sun measurements. The results demonstrate that the instrument has …
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Control for an optically powered firing set using miniature photovoltaic arrays
… that represents the electrical, optical, and thermal characteristics of the system. A closed loop feedback control system with a PI controller is then developed to control the output voltage state as well as minimizing the MPA and illuminating source temperature.
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