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- W2779083671 abstract "Nuclear power accounts for about 20% of theelectricity generated in the United States today [29], butconventional reserves of terrestrial uranium are estimated to bedepleted within the century [19]. Fortunately, an estimated 4.5billion tonnes of uranium exists as ions in the ocean [281, and asystem of adsorbent polymers has been designed to extract theuranium. A proposed machine to harvest seawater uranium, theSymbiotic Machine for Ocean uRanium Extraction (SMORE), is fixed toa floating wind turbine and requires 550 kW to power four nets ofshell enclosures containing the adsorbent and the chemicalprocessing required to remove the uranium and reuse the polymer[161. Given the high energy density of ocean waves, this thesisexplores the potential of wave energy converters to provide thepower requirements of SMORE. Each net requires 92 kW of power, orabout 1100 kNm to drive continuous movement at 0.087 rad/s. Thisthesis found that harnessing that amount of power would require aheaving buoy of 11.5 m diameter and 1 m height, though the largegeometry and range of motion caused structural concerns. Incontrast, a pitching buoy of 4.7 m diameter and 2 m height couldprovide the same amount of power, and the structure could be moreeasily reinforced with only one moving body. Various configurationsof pitching buoys are discussed as well. While this thesis defineda first order approximation of a future system, the modeling ofrealistic sea states and several mechanical optimizations need tobe explored further. The integration of some electronics to powerthe chemical processing tanks and optimize the response control ofthe buoy may also provide benefit at a small increase in cost.Using a wave energy converter reduces not only the power load onthe turbine, but also may decrease the incident wave loads andstabilization requirements of the turbine [13]. Further costanalysis is required, but a future implementation of this waveenergy converter could add great value to both the uraniumharvesting system and floating wind turbine." @default.
- W2779083671 created "2018-01-05" @default.
- W2779083671 creator A5032858026 @default.
- W2779083671 date "2017-01-01" @default.
- W2779083671 modified "2023-09-23" @default.
- W2779083671 title "Exploration of configurations of wave energy converters to mechanically drive a seawater uranium harvester" @default.
- W2779083671 hasPublicationYear "2017" @default.
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