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 63 for “"air cooling"”.
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Metal foams as novel materials for air-cooling heat exchangers
… exchangers. In addition to characterizing the air-side pressure-drop and heat transfer performance, issues related to condensate drainage and frost formation are considered. The main performance obstacle for the application of metal foams is the relatively high pressure drop occurring for …
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A piezoelectric translational flow agitator for active air cooling of electronics.
… fabrication, the need increases for powerful cooling facilities. Different cooling schemes such as liquid cooling, direct sprays, boiling heat transfer, etc. have been developed to meet the needs of heat removal. Air cooling still has potential for improvement and continues to hold many …
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Next-generation dedicated outdoor air cooling systems for low-energy buildings
… consumption in the United States, among which cooling energy comprises an especially significant part in hot and humid climates. To achieve low-energy and low-carbon building communities, it is necessary to design high-performance building enclosures and develop energy-efficient cooling …
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Air Cooling of High-Heat-Flux Electronics Using Wettability-Engineered Vapor Chambers
… reliable, yet sustainable and low-energy-use cooling solutions. Air cooling, while highly reliable and conventionally used in most industrial scenarios, lacks the capacity to remove high heat fluxes frequently observed in modern integrated technology (O(~1 kW/cm2)). While recent scientific …
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RISK ASSESSMENT AND MITIGATION OF TELECOM EQUIPMENT UNDER FREE AIR COOLING CONDITIONS
… about 40% of the total energy is devoted to the cooling infrastructures in data centers. One way to save energy is free air cooling (FAC), which utilizes the outside air as the primary cooling medium, instead of air conditioning, to reduce the energy consumption to cool the data centers. Despite …
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An evaluation of combined air-cooling and water-cooling for non-permeable clothing
Typescript (photocopy).
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An evaluation of combined air-cooling and water-cooling for non-permeable clothing
Typescript (photocopy).
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Development and analysis of techniques to improve air-cooling and temperature uniformity in battery packs
… a novel concept has been developed to improve air-cooling and temperature uniformity in a simple battery pack by incorporating inlet plenum, jet inlets, and vortex generators. The proposed battery pack concept reduced the maximum temperature by about 6%. Furthermore, the temperature difference …
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Development and experimental analysis of a novel hybrid cooling concept for electric vehicle batteries
In this thesis, a novel hybrid cooling concept for electric batteries is developed and studied at both the cell-level and pack-level experiments. The concept is based on a simple air-cooling duct that utilizes enhanced water vaporization by convection to achieve an effective cooling. A series of …
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The Next Generation Router System Cooling Design
… which dissipate large amounts of heat while cooling technology for these electronic systems has remained relatively unchanged. This report illustrates the development and testing of a hybrid liquid-air cooling system prototype implemented on Cisco’s 7609s router. Water was the working fluid …
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Computational Modeling of Nitrogen Oxide Emissions From Biodiesel Combustion Based on Accurate Fuel Properties
… exhaust gas recirculation (EGR) and charge air cooling were all effective in reducing NOx emissions from biodiesel.
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Evaluation of Existing Subsurface Cooling Systems Worldwide and Development of Efficient Cooling Methods and Systems Based on Renewable Energy Sources
… of mitigating heat will require substantial cooling capacity in some cases. For deep deposits to be mined at increasing depths, mechanical cooling systems used to maintain an acceptable underground climate will most surely become increasingly complex and expensive, which most certainly …
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Optimizing hybrid vehicles : battery pack design, energy management, and collaborative learning
… thesis include insights into the minimization of air-cooling costs in battery packs, a better understanding of the blended battery pack design space, and in-vehicle applications of collaborative learning. First, I have advanced the understanding of how cell-level properties affect the overall …
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Cooling Innovation and Circularity: Addressing Water Stress in the Age of AI-Driven Data Centers
… nature of data centers, the research explores cooling technologies aimed at reducing environmental impact. Traditional air cooling is compared with innovative liquid and evaporative cooling techniques. Additionally, the thesis promotes circular economy principles, emphasizing resource …
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The impact toughness of iron manganese alloys.
… ferrite rather than lath martensite at a higher cooling rate and lower transformation temperature. A further considerable improvement in toughness has been achieved by water quenching rather than air cooling from the austenitisation temparature. Auger electron spectroscopy studies have shown that …
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SIMULATION AND OPTIMIZATION OF COMBINED CYCLE GAS TURBINE POWER PLANTS
… off-design operation; (3) develop a novel inlet air cooling system to improve CCGT performance during hot seasons; (4) develop a machine learning-based method to predict gas turbine performance and reproduce correction curves from real operational data.
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It's getting hot in here : temperature gradients in lithium-ion battery packs
… three and four, with and without unidirectional air-cooling from the top of the pack. The resulting temperature data was analyzed to see if a temperature gradient over the pack was present. A correlation was found between placement in the pack and cell temperature; the lower down in the pack a …
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A Dynamic Model Of The Human/cooling System/clothing/environment System
… also lead to substantial heat stress. Personal cooling is widely used to alleviate heat stress, especially for those situations where ambient environmental cooling is not economically viable or feasible. It is important to predict the physiological responses of a person wearing PPE with personal …
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Experimental Design and Comparative Testing of a Hybrid-Cooled Computer Cluster
With water cooling becoming an affordable option both at home and at scale, it is important to consider the possible benefits over air cooling. There are several methods of liquid cooling, notables include: immersion, cold water cooling, and warm water cooling. The total cost of ownership is …
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