• La universidad
  • Campus
  • Catálogo
    • Login
    View Item 
    •   DSpace Home
    • 03.Tesis (maestrías)
    • Energía y Ambiente (ITBA-KIT)
    • View Item
    •   DSpace Home
    • 03.Tesis (maestrías)
    • Energía y Ambiente (ITBA-KIT)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Thermohydraulic investigation on the use of carbon dioxide as coolant for a solid breeding blanket for DEMO

    Thumbnail
    View/Open
    Tesis_Maestría_Caspari (5.540Mb)
    Date
    2017
    Author
    Caspari, Felix
    Metadata
    Show full item record
    Abstract
    "The Helium Cooled Pebble Bed (HCPB) Breeding Blanket (BB) is one of the 4 BB concepts being investigated in the EU for their possible implementation in a demonstration nuclear fusion reactor (DEMO). The choice of He as fuid coolant for the BB is motivated by a virtually complete transparency to neutrons, leaving unafected the T production capabilities of the blanket, as well as chemical inertness, molecular stability under high temperatures and neutron irradiation and a superior heat conductivity and capacity, leading to the best cooling performance in terms of heat transfer capabilities among other gas cooling choices. However, this cooling performance figure is hindered by the very low density of the gas, which leads to large pressure drops and high pumping power, thus afecting the overall plant efficiency, as well as to chronic leakages and large coolant inventories. These disadvantages, together with the still immature technology readiness of the respective turbomachinery, the price of this coolant, as well as its recognized limited resources pose concerns about the use of He as coolant for a BB in DEMO. On the other side, carbon dioxide has been the fuid coolant choice since the 50's in the nuclear fission industry for gas cooled reactors (MAGNOX, AGR). Despite its lower heat capacity and thermal conductivity (about 22% and 17% of that of helium respectively), its larger density (11 times larger molecular weight for CO2) can lead to an advantageous performance on heat dissipation rate per unit of pumping power. This feature, coupled with its relative transparency to neutrons, the molecular stability at the operating temperatures of the BB and the industrial scale ready turbomachinery makes CO2 an attractive alternative to He. The feasibility of a CO2-cooled breeding blanket is assessed in this work from the point of view of the thermohydraulic performance."
    Subject
    REACTORES NUCLEARES ; TERMOHIDRAULICA ; FUSION NUCLEAR ; DIOXIDO DE CARBONO ; FLUIDOS
    xmlui.dri2xhtml.METS-1.0.item-type
    Tesis de maestría
    URI
    http://ri.itba.edu.ar/handle/123456789/1158
    Collections
    • Energía y Ambiente (ITBA-KIT) [33]

    My Account

    LoginRegister

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsxmlui.ArtifactBrowser.Navigation.browse_directorGeographic / Temporal CoverageThis CollectionBy Issue DateAuthorsTitlesSubjectsxmlui.ArtifactBrowser.Navigation.browse_directorGeographic / Temporal Coverage

    Statistics

    View Usage Statistics
    Licencia Creative Commons

    Todos los ítems de este Repositorio Institucional poseen la Licencia Creative Commons Atribución-NoComercial-CompartirIgual 4.0 Internacional . La misma define las libertades y obligaciones que los usuarios finales disponen para la descarga y uso de los contenidos.

    qrcode

    Instituto Tecnológico Buenos Aires

    Av. Eduardo Madero 399 - (C1106ACD) - Ciudad Autónoma de Buenos Aires - Argentina
    Horario: Lunes a Viernes de 9 a 20 h. | Tel: (54 11) 3754-4602/4604 int. 5970 y 6005
    Mail: biblio@itba.edu.ar

    Theme by 
    @mire NV