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pebble bed fusion
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pebble bed fusion
Ceramic pebble bed development for fusion blankets
1995-3-1 Heat transfer in pebble beds for fusion blankets. Fusion Technol., 17 (1990), p. 597. View Record in Scopus Google Scholar. M.Dalle Donne, A Goraieb, G Sordon. Measurements of the effective thermal conductivity of a bed of Li 4 SiO 4 pebbles of 0.35-0.6 mm diameter and of a mixed bed of Li 4 Si0 4 and aluminum pebbles.
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Ceramic pebble bed development for fusion blankets
1995-3-1 Ceramic pebble bed development for fusion blankets. Author links open overlay panel P Gierszewski a M.Dalle Donne b H Kawamura c M Tillack d. Show more
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Fusion reactor pebble bed studied by X-ray
2010-9-24 The thermo-mechanical behaviour of pebble beds in the blanket of a fusion reactor depends on pebble arrangement in the beds, the number of pebble-pebble and pebble-blanket wall contacts, as well as the respective
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Packing characteristics of pebble beds for fusion reactors
2022-3-1 The pebble bed stress-strain relationship under different numbers of cyclic loads was studied. As the number of load cycles increased, the stiffness of the pebble bed stabilised. Meanwhile, the larger the friction coefficient, the more cycles the pebble bed structure needed to reach stability. There were no more changes to the stress-strain
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Drucker–Prager–Cap creep modelling of pebble beds in
2005-10-31 1.. IntroductionThis paper focuses on the development of a model to simulate the thermomechanical behaviour of fusion pebble beds. The modelling work is needed to be able to propose a reliable design for the helium cooled pebble bed blanket concept (HCPB), which is one of two EU breeding blanket concept studies since 1995 .. In the recent design lithium
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Pebble Bed an overview ScienceDirect Topics
A pebble-bed (packed-bed) storage unit uses the heat capacity of a bed of loosely packed particulate material to store energy. A fluid, usually air, is circulated through the bed to add or remove energy. A variety of solids may be used, rock and pebble being the most widely used materials. A pebble-bed storage unit is shown in Fig. 4.4.
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Packing characteristics of pebble beds for fusion reactors
2022-3-1 Li2TiO3/Be12Ti mixed pebble beds with multi-sized particles are one of the potential candidates for the WCCB (water-cooled ceramic breeder blanket) of the CFETR (China Fusion Engineering Test
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Thermo-Mechanics of Pebble Beds in Fusion Blankets
2008-11-18 Assuming a pebble bed is a continuum medium, the phenomenological model, as the second approach, describes the typical overall
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Heat Transfer in Pebble Beds for Fusion Blankets
2017-5-9 The pebble bed is contained in the annular space between the two concentric cylinders. Experiments with stagnant and flowing gas are performed. The experimental values of the effective thermal conductivity and the wall heat transfer coefficient are compared with those predicted by correlations available from the literature.
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Pebble Bed Reactors an overview ScienceDirect Topics
Pebble Bed Reactors. The pebble bed reactor, developed and built in Germany, is a helium gas-cooled, high-temperature reactor fueled with spherical, graphite matrix fuel elements surrounded by bottom and side graphite reflectors. From: Encyclopedia of Physical Science and Technology (Third Edition), 2003. Related terms: Nuclear Power Plant
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Thermo-Mechanics of Pebble Beds in Fusion Blankets
2008-11-18 Assuming a pebble bed is a continuum medium, the phenomenological model, as the second approach, describes the typical overall
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Heat transfer in pebble beds for fusion blankets osti.gov
1990-7-1 The U.S. Department of Energy's Office of Scientific and Technical Information
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Thermo-Mechanical Modelling of Pebble Beds in Fusion
2011-2-26 In this investigation, a thermo-mechanical model of pebble beds is adopted and developed based on experiments by Dr. Reimann at Forschungszentrum Karlsruhe (FZK). The framework of the present material model is composed of a non-linear elastic law, the Drucker-Prager-Cap theory, and a modified creep law. Furthermore, the volumetric inelastic strain
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Thermo-mechanics of pebble beds in fusion blankets KIT
2016-3-28 Thermo-Mechanik von Schüttbetten in Fusionsreaktorblankets Heliumgekühlte Schüttbetten (HCPB: Helium Cooled Pebble Beds) werden in der Ummantelung von Fusionsreaktoren, dem sogenannten Blanket, zur Tritiumerzeugung und als Neutronenmultiplikator verwendet und unterliegen somit harten Einsatzbedingungen. Die
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Status of ceramic breeder pebble bed thermo-mechanics
2012-8-1 Identification of material parameters of a thermo-mechanical model for pebble beds in fusion blankets. Fusion Engineering and Design, 82 (2) (2007), pp. 189-206. Article Download PDF View Record in Scopus Google Scholar. J. Fokkens Thermo-mechanical finite element analyses for the hcpb in-pile test element. Technical Report 21477/02.50560/P
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X-energy is Developing a Pebble Bed Reactor
2021-1-5 X-energy, located just outside the nation’s capital in Rockville, Maryland, is working on a pebble bed, high-temperature gas-cooled reactor that the company says can’t melt down. The company's Xe-100 reactor and
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Drucker–Prager–Cap creep modelling of pebble beds in
关键词： Practical, Theoretical or Mathematical/ creep elasticity finite element analysis fusion reactor blankets fusion reactor theory nuclear engineering computing stress relaxation thermal expansion thermomechanical treatment/ Drucker-Prager-Cap creep modelling fusion blankets solid breeder interaction beryllium pebble beds structural material thermal expansion
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Shielding Design Optimization of the Helium-Cooled
The helium-cooled pebble bed (HCPB) breeding blanket (BB) is one of the two driver-blanket candidates for the European DEMO fusion reactor. Recent design activities were focused, among other objectives, on the achievement of an efficient shielding system to adequately protect the vacuum vessel (VV) and toroidal field coils (TFCs). Several shielding options have been
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Packing characteristics of pebble beds for fusion reactors
2022-3-1 Li2TiO3/Be12Ti mixed pebble beds with multi-sized particles are one of the potential candidates for the WCCB (water-cooled ceramic breeder blanket) of the CFETR (China Fusion Engineering Test
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Heat Transfer in Pebble Beds for Fusion Blankets
AbstractThe design of a fusion reactor blanket based on a bed of lithium-containing ceramic pebbles or a mixture of ceramic and metallic pebbles requires knowledge of the effective thermal conductivity of such beds. Binary mixtures of spheres with the same diameter but different conductivities as well as beds formed by one type of sphere are investigated. The pebbles are
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Thermo-mechanical Modelling of Pebble Beds in Fusion
2008-7-1 @article{osti_21091564, title = {Thermo-mechanical Modelling of Pebble Beds in Fusion Blankets and its Implementation by a Return-Mapping Algorithm}, author = {Gan, Yixiang and Kamlah, Marc}, abstractNote = {In this investigation, a thermo-mechanical model of pebble beds is adopted and developed based on experiments by Dr. Reimann at Forschungszentrum
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tritium breeder pebble bed for fusion blanket
2021-4-9 tritium breeder pebble bed for fusion blanket B.P. Gong, H. Cheng, L. Wang, Y.J. Feng, X.Y. Wang Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, China [email protected] •Fabrication and characterization of the tritium breeder Li 4 SiO 4 pebbles were summarized. •Mechanical properties and fragmentation behaviors of ceramic
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Thermo-mechanics of pebble beds in fusion blankets KIT
2016-3-28 Thermo-Mechanik von Schüttbetten in Fusionsreaktorblankets Heliumgekühlte Schüttbetten (HCPB: Helium Cooled Pebble Beds) werden in der Ummantelung von Fusionsreaktoren, dem sogenannten Blanket, zur Tritiumerzeugung und als Neutronenmultiplikator verwendet und unterliegen somit harten Einsatzbedingungen. Die
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New Reactor Types pebble bed, thorium, plutonium, fusion
PEBBLE BED MODULAR REACTORS (PBMR) Of the more innovative Generation III reactor types, the best known is the Pebble Bed Modular Reactor (PBMR). (Thomas, 1999; Harding, 2004; Hirsch et al., 2005.) PBMRs are helium cooled and graphite moderated and intended to be built in small modules.
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On Thermal Characterization of Breeder Pebble Beds with
Lithium ceramic pebble beds are a proposed form for tritium breeding volumes in fusion reactors. In application, the beds will endure high volumetric energy deposition densities but must maintain within relatively-narrow prescribed temperature operating windows for efficient tritium release, while also providing continued transport of high quality heat into coolants for power production.
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PUBLICATIONS Fusion Science and Technology Center
2 天前 C. Zhang, A. Ying, M. Abdou, Y. Park, “Ceramic Breeder Pebble Bed Packing Stability under Cyclic Loads“, Fusion Engineering and Design, 109-111:267-271 (Mar2016). C. Kawczynski, S. Smolentsev, M. Abdou, “ An induction-based magnetohydrodynamic 3D code for finite magnetic Reynolds number liquid-metal flows in fusion blankets “, Fusion
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