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 19 of 19 for “"spray cooling"”.
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Spray cooling applications for alternative energy vehicles
… induced drag. Here we examine utilizing water to spray onto the heat exchangers to increase performance, allowing a decrease in surface area required for heat exchangers in alternative fuel source vehicles. The scalable and optimized super hydrophilic heat exchangers developed here at UIUC have …
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Mill roll profile control by means of spray cooling
… in order to simulate the effectiveness of each spray zone in removing heat from the roll. A simplified method of evaluating roll thermal cambers, derived from the model, is presented. The model shows good agreement between predicted and measured roll thermal cambers.The model is linked to a …
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Transient spray cooling of top and bottom moving high temperature surfaces
High pressure water spray cooling, widely used in various industrial processapplications due to high impact force and high dissipating ability which is required invarious manufacturing processes such as scale removal from oil wells, scale removalfrom crude oil storage tanks, steel making, including …
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Spray Cooling For Land, Sea, Air And Space Based Applications, A Fluid Managment System For Multiple Nozzle Spray Cooling And A Guide To High Heat Flux Heater Design
… distinct chapters all linked by the topic of spray cooling. Chapter one gives a detailed categorization of future and current spray cooling applications, and reviews the major advantages and disadvantages that spray cooling has over other high heat flux cooling techniques. Chapter two outlines …
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Nozzle analysis and heat transfer model for spray cooling of glass fibers
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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TRACE code validation of boiling water reactor spray cooling injection into a SVEA fuel assembly
… Accident (LOCA) scenarios. Emergency spray cooling injection is a safety feature implemented in many Boiling Water Reactor (BWR) designs to re-flood a reactor during an accident. Significant experimental work has qualified the efficacy of spray cooling, and ongoing computational …
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Design, construction and initial testing of experimental test package for convective spray cooling in terrestrial gravity conditions
The design and construction of an apparatus for spray cooling tests was completed to better understand the effects of spray cooling with different geometries at varied flow rates and different spray orientations. Three different geometries were studied at four different spray volumetric flow rates …
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Study of spray-cooling control for maintaining metallurgical length or surface temperature during speed drop for steel continuous casting
… are open-loop. The main reason is that the spray cooling droplets impinging on the high temperature surface induce steam clouds, which make temperature measurement unreliable. However, for operations limited by the casting speed, or for steel grades sensitive more to centerline rather than …
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Heat transfer during spray water cooling using steady experiments
Spray water cooling is widely used in many industrial processes to control heat removal from a hot material surface. In order to control heat transfer rates and obtain desired surface temperature distributions, a deeper understanding of fundamental spray cooling dynamics and more accurate …
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Thermal Management, Beam Control,and Packaging Designs For High Power
… diode lasers are described. Low pressure water spray cooling for a high heat flux system is developed and proven to be an ideal cooling method for high power diode laser arrays. In order to enable better thermal and optical performance of diode laser arrays, a new and simple optical element, the …
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Correlation for measured mold heat flux and CON1D simulations for feasible operating conditions in thin-slab continuous casting
… of high quality slabs in a safe environment. Cooling in steel continuous casting comprises primary cooling in mold followed by secondary cooling in spray cooling zone. In this work, various parameters affecting heat flux are studied, first in mold from plant measurements and second in spray …
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The use of air assisted atomised water spray systems for controlled cooling of high temperature forgings
… Forgings, USA, to assist in the development of a cooling system,based on air assisted atomised water sprays primarily for the quenching of aerospace components from high temperatures.<br/>The mechanical properties of forgings used in aircraft engines depend on the rate of cooling from the heat …
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Scalable manufacturing of hierarchical nanostructures for thermal management
… with enhanced heat-transfer performance in spray-cooling applications, which include nuclear reactor boiling, continuous casting of metals, and thermal management of electronics.
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Dispersion of water sprays in a transverse air jet and the aging of spray nozzles
This thesis explores spray cooling methods used in the manufacturing process of glass fibers. At the onset of the manufacturing process glass fibers are extruded from a pool of molten glass through an array of holes in a heated bushing plate. Before the fibers can be wound onto a spool, the fibers …
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The evaporation of drops from super-heated nano-engineered surfaces
In pool boiling and spray cooling the Leidenfrost point marks the transition from nucleate boiling, in which the evaporating liquid is in contact with the surface, and film boiling, in which a layer of vapor separates the fluid from the surface. For a single evaporating drop, the Leidenfrost point …
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An experimental and theoretical study of the cooling of a thin glass fiber during the formation process
The cooling of a thin, moving glass fiber was studied through both experiments and theoretical method in the present thesis. An experimental system was built at a laboratory scale, which included a glass fiber production subsystem, a temperature measurement subsystem, and a thermocouple temperature …
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Prediction of tool temperature during machining of Ti-6Al-4V alloy with atomization-based cutting fluid spray system
Atomization-based cutting fluid (ACF) spray system is being sought as an alternative to cooling processes currently used for machining difficult-to-cut materials such as Ti-6Al-4V alloy. The ACF spray system generates a stream of monodispersed droplets of cutting fluid which then gets mixed in a …
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A study of the forming limits of cold and hot forming of aluminium alloy sheets with multi-point tooling
… particularly by integrating an intermediate fast cooling process into the process chain of the forming of aluminium alloys. However the spray cooling that is currently popular in industry cannot achieve the required high cooling rates, while introduction of an intermediate fast cooling process …
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Thermal Management Using Liquid-vapor Phase Change in Nanochannels
… subsequent application of heat-flux removal for cooling technology is first reported. The latter part of the dissertation is related to the disjoining pressure driven flow of nanoscale liquid film and liquid-vapor phase change in nano confinement. First, experimental and numerical investigation …