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 56 for “"Heat Sinks"”.
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Bacteria mediated heat sinks
… a model instead to use ice as an isothermal heat sink. The model proposes to make use of thermodynamics and stabilize an isothermal solid-liquid interface created during ice formation, which will lead to having an isothermal free surface in the liquid phase. The model was validated using a …
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Forced-convection, liquid-cooled, microchannel heat sinks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1987.
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Active heat transfer enhancement in integrated fan heat sinks
… their full performance. The "efficiency" of heat sinks is also becoming more important: cooling of electronics consumes 1% of worldwide electricity use by some estimates. Unfortunately, current cooling technologies often focus on improving heat transfer at the expense of efficiency. The …
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Active heat transfer enhancement in integrated fan heat sinks
… their full performance. The "efficiency" of heat sinks is also becoming more important: cooling of electronics consumes 1% of worldwide electricity use by some estimates. Unfortunately, current cooling technologies often focus on improving heat transfer at the expense of efficiency. The …
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Design of device-integrated heat sinks for liquid immersion cooling applications
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Topology optimized design and performance analysis of heat sinks under forced convection
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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Advanced Thermal Management Strategies – Scalable Coal-Graphene based TIMs and Additively Manufactured Heat Sinks
… two novel approaches to dissipate redundant heat better- first by novel carbonaceous-nanoparticle additives to develop thermal interface materials with superior performance and the second by using advanced metal additive manufacturing techniques to design and analyze metal-lattice based heat …
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Thermal management of discretized heaters using CuW microchannel heat sinks and FC3283 for laser diode applications
Single-phase cooling using microchannel heat sinks (MCHS) has become a popular approach for overcoming the thermal challenges associated with high-powered microelectronic devices. Thermal management is one of the largest barriers to higher power densities in electronics and frequently limits …
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Geometric and numerical optimisation of single- and two-phase convective heat transfer in microchannel heat sinks
… are required for the present and future high heat flux applications because natural and forced air convection and many other cooling methods employing liquid coolants cannot meet up with the challenges. More transistors are added to the surfaces of electronic chips to increase the capacity of …
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The development of a new compact model for prediction of forced flow behaviour in longitudinal fin heat sinks with tip bypass
… the capacity to produce significant amounts of heat which, if not removed efficiently, could lead to component failure. The most common technique of heat removal is by making use of a heat spreader, or so¬-called heat sink. These devices are excellent heat conductors with a large surface area to …
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Air flow in a high aspect ratio heat sink
The increasing heat output of modern electronics requires concomitant advances in heat sinking technology: reductions in thermal resistance and required pumping power are necessary. This research covers the development of a novel type of air-cooled heat sink, in particular the air flow through such …
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Evaluation of Various Energy Storage Options for the Internal Thermal Loads of a Non-Airbreathing Hypersonic Vehicle
… additional constraints. Thus, having efficient heat sinks that are capable of storing much of these heat loads is imperative. Passive thermal management systems, i.e., heat sinks, are preferable in most applications because they do not require power input to operate, and they are typically …
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An air-breathing, portable thermoelectric power generator based on a microfabricated silicon combustor
… conversion efficiency of 2.5% (based on lower heating value). The energy and power densities of the demonstrated system were 321 Wh/kg and 17 W/kg, respectively. The pressure drop through the system was 258 Pa for a flow of 15 liters per minute of air, and so the parasitic power requirement for …
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Body powered thermoelectric systems
… or, equivalently, 280µW for the entire heat sink system. Additionally, this report details the physics associated with thermoelectric modules, addresses the issues with modern thermoelectric heat-sinks, introduces two new types of wearable, conformal heat sinks, quantifies the …
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Micro and nanostructured surfaces for enhanced phase change heat transfer
Two-phase microchannel heat sinks are of significant interest for thermal management applications, where the latent heat of vaporization offers an efficient method to dissipate large heat fluxes in a compact device. However, a significant challenge for the implementation of microchannel heat sinks …
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Numerical optimisation and theoretical analysis of complex microchannel heat exchangers
… of the geometries in forced convective heat transfer and steady state laminar incompressible fluid flow. Microchannel heat sinks used were numerically modelled from highly conductive (aluminium) solid material substrate. ANSYS FLUENT Response Surface Optimisation Tool (RSO) was used to …
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Micro and nanostructures for two-phase fluid and thermal transport
… of the role of surface structures in two-phase heat sinks including capillary driven evaporators and flow boiling in microchannels. First, we developed a detailed finite volume numerical model for thin-film evaporation from micropillar array wick structures. The model can predict the dry-out …
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Additive Manufacturing for Phase Change Thermal Energy Storage and Management
… are highly transient and require pulse heat dissipation. Heat sinks, or thermal management devices made of a phase change material can absorb large heat spikes while maintaining a constant temperature. Additive manufacturing techniques hold tremendous potential to enable co-optimization …
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Analysis and feasibility of an evaporative cooling system with sessile droplet evaporation to provide cooling for microprocessors
… space restrictions corresponding to the current heat sinks with larger droplets and fewer of them. The results of the numerical modelling work found that a minimum of 41 posts connecting each of the tiers were required to cool the Xenon Processor and 42 posts for the Core i7-900 Processor. It was …
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