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 16 of 16 for “"hybrid cooling"”.
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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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Modeling and Optimization of Tunable Insulated Hybrid Cooling to Extend Food Shelf-life Using Scalable and Affordable Materials
Cooling is a pivotal technology for tackling the global food crisis by securing the food shelf-life. More than 15% of food loss is due to improper food storage temperatures in developing countries. Every 10℃ temperature drop can increase food shelf-life by 2-3 times. However, conventional …
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Increasing the Heat Transfer on a Grooved Surface Under Dry and Wet Conditions by Using of Jet Impingement
An approach to hybrid cooling technique is proposed using air jets which impinge on a triangular grooved surface with dry grooves and grooves containing water. One major application is for condensers of thermoelectric power plants. The heat and mass transfer analogy were successfully used to …
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Subambient Passive Cooling Enabled by Polyethylene Aerogels
Subambient cooling is vital for promoting human health and well-being, driving sustainable economic growth, and minimizing food waste. Providing these benefits however, comes with major energetic and environmental costs. The over 1.6 billion air conditioning units currently in use around the world …
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Modeling temperature distribution in cylindrical lithium ion batteries for use in electric vehicle cooling system design
… the target heat transfer coefficient for an EV cooling system 3) analyze the key design parameters of EV thermal management systems, and, ultimately, 4) determine the method of cooling necessary to prevent thermal runaway. The models are based on the fundamentals of heat transfer and are …
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Experimental and Numerical Analysis of Enhanced Micro-Channel Cooling Using Micro-Synthetic Jets
<p>In this work, a novel cooling scheme based on micro thermo-fluidic technology is investigated for the thermal management of power electronics. This cooling scheme combines the micro-channel heat sink with micro-synthetic jets. The basic idea is to utilize the flow control aspects of synthetic …
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Modeling water use at thermoelectric power plants
… Africa. Part 2 of the thesis then focuses on cooling systems, by far the largest consumers of water in most power plants. The water consumption of different cooling systems is placed on a common quantitative basis, enabling direct comparison of water consumption between cooling system types, …
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Experimentally validated multiscale thermal modeling of electronic cabinets
… electronic cabinet and the test vehicle with hybrid cooling technique. The latter incorporated double-sided cooling with hybrid forced air convection, thermoelectric cooling, and micro-channel liquid cooling. The overall multi-scale modeling framework was able to reduced numerical models …
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Mixed-Mode Cooling Design for Office Buildings in Arid Climates
… commercial building energy consumer. Mixed-Mode/hybrid cooling is an innovative approach that promotes energy and carbon emission savings while maintaining a satisfactory indoor environment. Such systems maximise the use of passive cooling strategies, operate low energy cooling strategies …
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Electro-Thermal Codesign in Liquid Cooled 3D ICs: Pushing the Power-Performance Limits
… in chip performance. The conventional air cooling based heat sink has been proved to be insufficient for three dimensional integrated circuits (3D-ICs). Hence better cooling solutions are necessary. Micro-fluidic cooling, which integrates micro-channel heat sinks into silicon substrates of …
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Augmentation of Jet Impingement Heat Transfer on a Grooved Surface Under Wet and Dry Conditions
Array jet impingement cooling experiments were performed on flat and grooved surfaces with the surface at a constant temperature. For the flat surface, power and temperature measurements were performed to obtain convection coefficients under a wide range of operating conditions such as jet speed, …
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A THERMO-ECONOMIC STUDY OF SOLAR COOLING/HOT WATER SYSTEMS
… output temperature requirements for absorption cooling. The performance could be improved by incorporating a water heating loop in the basic cooling system so that the collectors could be utilised for hot water production during such "idle" periods. Commercial applications for such hybrid …
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The architectural implications of passive solar cooling systems in hot-arid climates
… first is its unusually hot-arid climate (thus cooling interior spaces becomes a crucial design consideration). and the second is its multi-dimensional urban identity. The city is a mixture of African, Arab, and European influences and resembles at the same time an oasis in the middle of the …
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Thermal Modelling, Management, and Electrical Safety Assessment for Containerised Vanadium Flow Battery Systems
… when the ambient temperature is high. Passive cooling is not sufficient to maintain VFB normal operation for high ambient temperature range sceneries. This dynamic thermal model provides essential support for the thermal management of large-scale containerised VFB systems applied across diverse …
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Development and analysis of thermal management strategies to improve Lithium-ion battery performance
… investigated with the objective of effective cooling and increased thermal uniformity within cylindrical Lithium-ion batteries. To achieve this, novel hybrid thermal management strategies have been proposed that combine air, liquid, and phase change material cooling systems. Several …
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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 …