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  • Submerged jet impingement boiling thermal management

    Creator:
    Cardenas, Ruander
    Abstract:
    Technologies such as avionics and power electronics are driving the demand for thermal management schemes towards high heat fluxes and low surface temperatures. Typically, these applications require the dissipation of heat fluxes in the rage of 100-1000 W/cm² while maintaining surface temperatures lower than about 85 °C. Phase-change heat transfer...
    Resource Type:
    Dissertation
    Full Text:
    Engineering presented on September 28, 2011. Title: Submerged Jet Impingement Boiling Thermal Management

  • Fracture toughness of void-site-filled skutterudites

    Creator:
    Eilertsen, James S.
    Abstract:
    Thermoelectric materials are playing an increasingly significant role in the global effort to develop sustainable energy technologies. Consequently, the demand for materials with greater thermoelectric efficiency has stimulated the development of state-of-the-art interstitially doped skutterudite-based materials. However, since intermetallics are often embrittled by interstitial substitution, optimal skutterudite-based device design, manufacture,...
    Resource Type:
    Masters Thesis
    Full Text:
    Engineering presented on December 7, 2011 Title: Fracture Toughness of Void-Site-Filled Skutterudites

  • Applications of the thermal wave technique in liquid thermal conductivity measurements and flow field diagnostics

    Creator:
    Wang, Zhefu
    Abstract:
    The thermal wave technique has been explored for the use of liquid thermal conductivity measurement and flow property diagnostics in this dissertation. For liquid thermal conductivity measurements, an experimental technique based on the thermal wave approach is developed. A stainless steel strip functions as both a heating element and a...
    Resource Type:
    Dissertation
    Full Text:
    Mechanical Engineering Presented on July 16, 2008. Title: Applications of the Thermal Wave Technique in

  • High-Flux Thermal Management With Supercritical Fluids

    Creator:
    Fronk, Brian M. and Rattner, Alexander S.
    Abstract:
    A novel thermal management approach is explored, which uses supercritical carbon dioxide (sCO2) as a working fluid to manage extreme heat fluxes in electronics cooling applications. In the pseudocritical region, sCO2 has extremely high volumetric thermal capacity, which can enable operation with low pumping requirements, and without the potential for...
    Resource Type:
    Article
    Full Text:
    additional thermal transport research and engineering are needed before practical systems can be realized

  • Thermal Actuation and Atomization for Desalination Systems

    Creator:
    Sharma, Deepak
    Abstract:
    Desalination stands for removing salt from saline water, and produce freshwater. Desalination technologies have been envisioned as a potential solution for freshwater production from oceans as an immense source of water acquiring 97% earth’s water, and 75% of earth’s surface. However, one third of world’s population face water scarcity every...
    Resource Type:
    Dissertation
    Full Text:
    Sharma for the degree of Doctor of Philosophy in Mechanical Engineering presented on March 15, 2022

  • Design and Testing of the FUEL System: Integrating Engineering and Ethnographic Methods in Global Development Efforts

    Creator:
    Ventrella, Jennifer L.
    Abstract:
    Clean cooking technologies and fuels have been cited as a viable way to slow climate change and reduce the health and environmental impacts associated with traditional cooking devices used by 40% of the world. While engineers in the Design for Development sector have created hundreds of stove designs that perform...
    Resource Type:
    Masters Thesis
    Full Text:
    for the degree of Master of Science in Mechanical Engineering and Applied Anthropology presented on

  • Systematic design of biologically-inspired engineering solutions

    Creator:
    Nagel, Jacquelyn Kay
    Abstract:
    Biological organisms, phenomena and strategies, herein referred to as biological systems, provide a rich set of analogies that can be used to inspire engineering innovation. Biologically-inspired, or biomimetic, designs are publicly viewed as creative and novel solutions to human problems. Moreover, some biomimetic designs have become so commonplace that it...
    Resource Type:
    Dissertation
    Full Text:
    Jacquelyn Kay Nagel for the degree of Doctor of Philosophy in Mechanical Engineering presented on June 14

  • Experimental Characterization of a Supercritical Carbon Dioxide Microchannel Solar Thermal Receiver

    Creator:
    L'Estrange, Thomas
    Abstract:
    Characterization of a microchannel solar thermal receiver for supercritical carbon dioxide (sCO₂) is presented. The receiver design is based on conjugate computational fluid dynamics and heat transfer simulations as well as thermo-mechanical stress analysis. Two lab scale receivers with a 2x2 cm² absorber area are fabricated and experimentally characterized -...
    Resource Type:
    Masters Thesis
    Full Text:
    Thomas L’Estrange for the degree of Master of Science in Mechanical Engineering presented on August 3

  • Proportional integral derivative control of an oil-heated fractal-like branching microchannel desorber

    Creator:
    Davis, Keith R.
    Abstract:
    A PID controller was designed to control the performance of an oil-heated fractal-like branching microchannel desorber for use in an ammonia-absorption refrigeration system. Both the amount and concentration of ammonia refrigerant generated at the desorber can be controlled by choosing the rectified circulation ratio as the controlled variable in a...
    Resource Type:
    Masters Thesis
    Full Text:
    the degree of Master of Science in Mechanical Engineering presented on December 10, 2007. Title

  • Methodologies to improve reliability engineering in early design

    Creator:
    O'Halloran, Bryan M.
    Abstract:
    This thesis is the summation of two publications with the motivation to move reliability analysis earlier in the design process. Current analyses aim to improve reliability after components have been selected. Moving specific analyses earlier in the design process reduces the cost to the designer. These early design analyses provide...
    Resource Type:
    Masters Thesis
    Full Text:
    Master's of Science in Mechanical Engineering - Thesis