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 11 of 11 for “"external cooling"”.
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Thermal Hydraulic numerical analysis of Fusion superconducting magnet systems
… to the winding pack, wound by conductors) and an external cryogenic circuit. During the thesis work, the pre-existing 4C code, was modeled for various coils with or without external cooling circuit as required. Henceforth, it was implemented against the wide range of transients, fast transients (~ …
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An experimental investigation of instability in turbulent-flow freezing
… a fully developed turbulent internal flow due to external cooling of the tube wall was conducted. A region of unstable freezing behavior was located and bounded in terms of initial Reynolds number and a nondimensional temperature parameter for the given system. This region was observed over the …
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Characterization of Diamond-Semiconductor Interfaces
… self-heating can be mitigated, and the need for external cooling systems can be reduced or even eliminated. However, the extreme conditions required for diamond deposition can unintentionally impact the substrate the diamond is being deposited on. This work focuses on characterizing the changes …
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The design of high power density annular fuel for LWRs
… to assess the performance of internally and externally cooled LWR annular fuel. Such fuel may be operated at 30-50% higher core power density than the current operating LWRs, and to a burnup of 80-100MWd/kgU. The models are used to optimize the fuel design so that it is able to achieve high …
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Alloy Design for a Fusion Power Plant
… transferring the heat of the reaction to an external cooling circuit. In such high-energy neutron irradiation environments, extensive atomic displacement damage and transmutation production of helium affect the mechanical properties of materials. Among these effects are irradiation hardening, …
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Numerical Investigation of Various Heat Transfer Performance Enhancement Configurations for Energy Harvesting Applications
… employ advanced technologies for internal and external cooling. These technologies have applications over wide range of applications, one of which is thermoelectricity. Hence, making use of gas turbine technologies in thermoelectrics would surely improve the efficiency of existing TEGs. This …
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Advanced design concepts for PWR and BWR high-performance annular fuel assemblies
… annular fuel designs with both internal and external cooling which can achieve higher power densities and hence, higher electricity output from the same basic reactor vessel and containment. Therefore the objectives of this project are to determine the optimal geometrical design parameters of …
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Effects of Realistic First-Stage Turbine Endwall Features
The modern gas turbine engine requires innovative cooling techniques to protect its internal components from the harsh operating environment typically seen downstream of the combustor. Much research has been performed on the design of these cooling techniques thus allowing for combustion …
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On the use of high performance annular fuel in PWRs
… annular fuel that features both internal and external cooling. Implementation of this fuel design in current pressurized water reactors (PWRs) will allow power uprates up to 50% while maintaining or improving its existing thermal and safety margins. Each annular fuel assembly is arranged in a …
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Heat management strategies in elite rugby sevens
… investigated the application of internal and external cooling strategies delivered via the use of ice slurry ingestion and the application of ice towels to the head, neck, and face before and during a repeated high-intensity exercise heat response test within an international elite men’s rugby …
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Practical precooling strategies and cycling time trial performance
Whole-body precooling can improve endurance exercise performance, especially in the heat; however there are logistical considerations that restrict the use of various precooling strategies prior to actual competition. Precooling is proposed to collectively reduce deep skin and body temperature and …