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 34 for “"thermal management systems"”.
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Enhanced Ambient Heat Rejection in Passive Thermal Management Systems
… channels. A semi-analytical model based on thermal- and fluid equivalent resistance networks is developed. The model is validated using a commercial CFD package. Finally, a thermo-economic study is performed using genetic algorithms in order to compare the performance of both technologies …
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Component-wise analysis of thermal management systems for electric aircraft
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Modeling and control of thermal management systems on electric vehicles
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Comparison of Heat Exchanger Designs for Aircraft Thermal Management Systems
Thermal management has become a major concern in the design of current and future more and all electric aircraft (M/AEA). With ever increasing numbers of on-board heat sources, higher heat loads, limited and even decreasing numbers of heat sinks, integration of advanced intelligence, surveillance …
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Analytical sensitivity analysis methodology for the co-design of thermal management systems
… this thesis is widely applicable to many other systems. However, it has been specifically designed to work with a graph-based modelling framework. This project was carried out with the intention of improving thermal management systems for electrified vehicles. A fluid loop with additional heat …
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Investigation of new phase change material based thermal management systems for Li-ion batteries
… temperature is 30°C. The results show that the thermal management system developed in the present study using 6 mm thick phase change composite plates can manage the battery temperature in the required range. n-Octadecane and polyurethane foam are used to make 3 mm and 6 mm thick plates. The …
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Development and modeling of novel battery thermal management systems for electric and hybrid electric vehicles
Thermal management system is necessary to control the operating temperature of the lithium ion batteries in battery packs for electrical and hybrid electrical vehicles. This thesis studies, develops and models novel battery thermal management systems for the battery packs in hybrid electric …
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Pack Level Design Optimization for Electric Vehicle Thermal Management Systems Minimizing Standard Deviation of Temperature Distribution
… can be addressed. This study focuses on the thermal management systems for electric vehicles and the application of design optimization in the early design phase considering the pack in its entirety. A liquid cooling system is considered for a current generation electric vehicle, with time …
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Exergy and exergoeconomic analyses and optimization of thermal management systems in electric and hybrid electric vehicles
… commercialization of these technologies, such as thermal management of batteries and electrification. In this PhD thesis, a liquid thermal management system (TMS) for hybrid electric vehicles is investigated and evaluated against alternative thermal management systems, and optimal parameters are …
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Effect of latent load on heat exchanger design
… continues to advance the need for efficient thermal management systems becomes increasingly more significant [14], [16]. Heat exchangers are a fundamental component of thermal systems. These systems often operate in high humidity environments where latent loads can significantly reduce …
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Self-Regulated Thermal Management with Shape-Memory Alloy Torsional Tubes
<p>The need for dynamic thermal management that adapts to varying system needs and requirements is a growing topic of interest in different engineering disciplines, most prominently aerospace and electronics. This demand for improved thermal management systems comes from the general increase of …
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Thermal performance of a Nam-Ju nanostructured copper oscillating heat pipe
… performance and decrease in size, more efficient thermal management systems are necessary to combat high heat fluxes. Copper heat pipes, and oscillating heat pipes are devices commonly used in the electronics industry to remove high heat fluxes, safeguarding sensitive electronic components from …
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Second law analysis of a liquid cooled battery thermal management system for hybrid and electric vehicles
… to evolve there is a need for better battery thermal management systems (BTMS), which maintain uniformity of operating temperature of the batteries in the vehicles. This thesis investigates the use of an indirect liquid cooled system, which can be applied to hybrid and electric vehicles. The …
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Design and optimization of an ultra-compact thermal management system integrated with micro-fins for high power applications
… require powerful and compact cooling systems in order to maintain operational capabilities. A key component that requires significant heat extraction (several hundreds of watts up to 1 kW) are silicon photo-conductive semiconductor switches (Si-PCSS). Many methods of thermal management …
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Dense, low-power environmental monitoring for smart energy profiling
… open-air environments can be modeled as thermal fluid systems in CFD simulations, the use of dense sensor networks can provide real-time monitoring of a building's airflow and thermal management systems without the need for computationally-intensive theoretical models, and can use this …
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Evaluation of Various Energy Storage Options for the Internal Thermal Loads of a Non-Airbreathing Hypersonic Vehicle
… Hypersonics not only produce large external thermal loads, but also an abundance of internal thermal loads from components such as power electronics, avionics, and batteries. Additionally, limited volume within such vehicles introduces additional constraints. Thus, having efficient heat sinks …
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Developing a HIL-Based Software Platform for Testing Electric and Hybrid Vehicle Powertrains
… inverter and dc/dc converter are two crucial subsystems of the powertrain and new prototypes require significant validation before implementing into production vehicles. As fundamental technologies such as power modules, thermal management systems, and passive components improve; the performance …
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Modeling temperature distribution in cylindrical lithium ion batteries for use in electric vehicle cooling system design
… ion batteries will experience what is known as thermal runaway. During thermal runaway, the temperature of the battery increases uncontrollably and fires and explosions can occur. For this reason, adequate thermal management is a necessity in bringing lithium ion battery powered vehicles to …
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Development of a Numerical Solver for Phase-Change and Two-Phase Flow in Porous Media
Porous media are used in several thermal management systems, such as loop-heat-pipes, to control the temperature of electronics and other components. It is important to understand the mechanisms of flow and phase-change in porous media to better control/increase the performance of those systems. In …
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Full-Scale Testing Of A Passively Modulated Oil-To-Air Cooler
… gas turbine engines need efficient and effective thermal management systems to increase performance and service life. One thermal management system used in gas turbine engines is the lubrication system cooler or oil cooler. The lubrication system provides the necessary lubrication to components …
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