Browsing by Author "Lipchitz, Adam"

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    Characterization of eutectic In-Bi-Sn alloy (Field’s metal) for use in single and two-phase liquid metal flow in natural circulation systems
    (2015-04-01) Lipchitz, Adam; Harvel, Glenn
    An In-Bi-Sn eutectic alloy was characterized for the purpose of liquid metal natural circulation experiments. The alloy was chosen to reduce the power requirement and enhance the safety of these types of experiments. The initial characterization included the development of a method of fabrication, an investigation of the chemical compatibility with air, water, borosilicate glass, and stainless steel. An investigation to experimentally determine the thermo-physical properties (viscosity, density, specific heat capacity, and thermal conductivity) of the liquid metal was performed. A numerical model of the natural circulation loop was developed and compared to experimental results of a liquid metal natural circulation experiment.
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    Electrohydrodynamic enhancement of extraterrestrial capilliary pumped loops for nuclear applications
    (2010-12-01) Lipchitz, Adam; Harvel, Glenn
    This work examines electrohydrodynamic enhancement of capillary pump loops (CPL) for use in extraterrestrial nuclear applications. A capillary pump uses capillary action through a porous wick to transport heat and mass. The capillary pump is being considered as a method to improve heat transport in extraterrestrial nuclear applications. The work consists of a literature review of electrohydrodynamics, capillary pumped loops and space type nuclear reactors. Current CPLs are assessed for their performance and several design solutions are investigated using theoretical and analytical techniques. Experimental analysis is performed on an electrohydrodynamic gas pump to determine their suitability for implementation into the vapour leg of a capillary pump loop. The results suggest the EHD gas pumps could offer improved performance and it is recommended experiments should be performed in future work with an EHD gas pump in a CPL for verification. A new design for the electrohydrodynamic evaporator is also developed for enhanced performance.