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  • Frequency and phase response of a resonantly-coupled alpha Stirling cooler

    Creator:
    Sripakagorn, Paiboon
    Abstract:
    A resonantly-coupled α-Stirling (RCAS) cooler was designed and constructed. Tests on air and helium were performed with constant driving displacement over a range of frequencies. The effects of changing driving amplitude and charged pressure were studied. The use of stainless steel bellows in place of pistons eliminated the problem of...
    Resource Type:
    Masters Thesis
    Full Text:
    - Coupled Alpha Stirling Cooler. Abstract approved: Richard B. Peterson A resonantly-coupled a-Stirling

  • Thermal characterization technique for thin dielectric films

    Creator:
    Indermuehle, Scott W.
    Abstract:
    A phase sensitive measurement technique that permits the simultaneous determination of two independent thermal properties of thin dielectric films is presented. Applying the technique results in a film's thermal diffusivity and effusivity, from which the thermal conductivity and specific heat can be calculated. The technique involves measuring a specimen's front...
    Resource Type:
    Masters Thesis
    Full Text:
    Dielectric Films. Abstract approved: Richard B. Peterson A phase sensitive measurement technique that

  • Design, modeling and performance of miniature reciprocating expander for a heat actuated heat pump

    Creator:
    Herron, Thomas G.
    Abstract:
    A miniature reciprocating expander is being developed as part of a larger program to develop a heat actuated heat pump for portable applications. By utilizing the higher energy density of liquid hydrocarbon fuels relative to batteries, a heat actuated heat pump would be able to provide cooling for much longer...
    Resource Type:
    Masters Thesis
    Full Text:
    : - / - .- Richard B. Peterson A miniature reciprocating expander is being developed as part of a larger program to

  • Investigation of the dimensional stability of an ultra-thin film gas/liquid contactor

    Creator:
    Peterson, Jerrod P.
    Abstract:
    The use of a permeable membrane to mechanically constrain a film of water with an area of 12 cm² and a thickness of 150 μm in a gas/liquid contactor was investigated. The membrane separated the vapor and liquid phases, and a stiffener plate made from a gas-permeable material was used...
    Resource Type:
    Masters Thesis
    Full Text:
    the Dimensional Stability of an Ultra-Thin Film Gas/Liquid Cnntacfnr Richard B. Peterson The use of

  • Integrated dual cycle energy recovery using thermoelectric conversion and an organic Rankine bottoming cycle

    Creator:
    Miller, Erik W.
    Abstract:
    Hot engine exhaust and industrial process exhaust represents a resource that is often rejected to the environment without further utilization. This resource is prevalent in the transportation and industrial process sectors, but stationary engine-generator systems also typically do not utilize this resource. Engine exhaust is considered high grade heat and...
    Resource Type:
    Masters Thesis
    Full Text:
    Thermoelectric Conversion and an Organic Rankine Bottoming Cycle. Abstract approved: Richard B

  • Development of a small scale scroll expander

    Creator:
    Harada, Kevin J.
    Abstract:
    The organic Rankine cycle (ORC) is a versatile approach in the utilization of waste heat in the production of electricity, clean drinking water, and cooling. The efficiency of these cycles must be maximized to make them economical. Parameters for the optimization of ORCs such as evaporator and condenser temperature have...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: Richard B. Peterson The organic Rankine cycle (ORC) is a versatile approach

  • Design, modeling, and performance of miniature reciprocating thermocompressor

    Creator:
    Edwards, Michael J.
    Abstract:
    Research in the miniaturization of thermomechanical systems in recent years has proven to be both rewarding and challenging. Micro-scale devices have tremendous technological potential but come with a new set of design problems. One such problem is energy storage. Heat actuated systems, driven primarily by thermal energy, take advantage of...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: __ _..,....~=~~--=-~-~~-~-~~"'----'-==--- Richard B. Peterson Research in the

  • Micro adiabatic combustion engine : concept development, simulation and combustion experiments

    Creator:
    Chewning, Scott R.
    Abstract:
    The current proliferation of portable electronic devices for personal communication, business and entertainment has created a demand for high energy density power supplies. A hydrocarbon fuel with a conversion efficiency of over 15% can provide greater energy density than current battery technology for these applications. Current micro-scale heat engines do...
    Resource Type:
    Masters Thesis
    Full Text:
    Abstract approved: Richard B. Peterson The current proliferation of portable electronic devices

  • Mixed reactant single chamber fuel cell, using products generated from the electrolysis of an aqueous electrolyte

    Creator:
    Jost, William C.
    Abstract:
    A Mixed Reactant Single Chamber (MRSC) Fuel Cell is a relatively recent concept in the field of fuel cell engineering originally developed in the late 1950’s. Typical fuel cells have separated reactants (a separated fuel and oxidizer) that react on their usually non-selective electro-catalytic materials. A mixed reactant fuel cell...
    Resource Type:
    Masters Thesis
    Full Text:
    : ___________________________________________________________________ Richard B. Peterson A Mixed Reactant Single Chamber (MRSC) Fuel Cell is a relatively recent

  • An exploration of microcombustor feasibility

    Creator:
    Hatfield, Jonathan M.
    Abstract:
    The goals of this research were first to examine flame quenching in tubing smaller than the quench diameter, and then to place lower size limits on microcombustor and microreactor systems by studying a catalytic microcombustor burning propane. In the first set of experiments, flame quenching was examined as a function...
    Resource Type:
    Masters Thesis
    Full Text:
    Exploration of Microcombustor Feasibility. Abstract approved: Dr. Richard Peterson The goals of this