Search results for " PEBBLE BED"

showing 10 items of 22 documents

On the improved current pulse method for the dynamic assessment of thermal diffusive properties

2009

Thermal condutctivity pebble bedSettore ING-IND/19 - Impianti Nucleari
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Thermal tests of ceramic breeder pebble beds for the Helium Cooled (HCPB) DEMO blanket

2002

NUCLEAR FUSION PEBBLE BEDS HCPB BLANKET
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TAZZA test section. Status of the research activity at the DIN

2002

NUCLEAR FUSION PEBBLE BEDS TAZZA MOCK-UP
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A Semi-Theoretical Approach to a Correlation for the Thermal Conductivity of a Beryllium Pebble Bed

2003

In the framework of the European Fusion Technology Programme, Lithium ceramics and Beryllium packed pebble beds are foreseen to be used as Tritium breeders and neutron multipliers, respectively, for the Helium Cooled Pebble Bed breeding blanket of a fusion power reactor operating with a D-T plasma. The present work is focused on the semi-theoretical investigation of the thermal conductivity of single size Beryllium pebble beds, starting from the main hypothesis that this conductivity depends linearly on pebble bed local temperature and total volumetric strain and introducing a method to determine the coefficients of such dependence on the basis of the results obtained by the SUPER-PEHTRA ex…

Fluid Flow and Transfer ProcessesBERYLLIUM PEBBLE BED THERMAL CONDUCTIVITYMaterials scienceMechanical EngineeringNuclear engineeringchemistry.chemical_elementFusion powerBlanketCondensed Matter PhysicsThermal conductivitychemistryThermalNeutronBerylliumPebbleHeliumSettore ING-IND/19 - Impianti Nucleari
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Overview of the HCPB Research Activities in EUROfusion

2018

In the framework of the EUROfusion’s Power Plant Physics and Technology, the working package breeding blanket (BB) aims at investigating four different BB concepts for an EU demonstration fusion reactor (DEMO). One of these concepts is the helium-cooled pebble bed (HCPB) BB, which is based on the use of pebble beds of lithiated ternary compounds and Be or beryllides as tritium breeder and multiplier materials, respectively, EUROFER97 as structural steel and He as coolant. This paper aims at giving an overview of the EU HCPB BB Research and Development (R&D) being developed at KIT, in collaboration with Wigner-RCP, BUTE-INT, and CIEMAT. The paper gives an outline of the HCPB BB design evolut…

Nuclear and High Energy PhysicsPower stationHelium-cooled pebble bed (HCPB)BlanketCondensed Matter Physics7. Clean energy01 natural sciences010305 fluids & plasmas13. Climate action0103 physical sciencesdemonstration fusion reactor (DEMO)Systems engineeringEUROfusion010306 general physicsDesign evolutiontritium breedingSettore ING-IND/19 - Impianti Nucleari
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Preliminary CAD implementation of EU-DEMO primary heat transfer systems for HCPB breeding blanket option

2019

Abstract This paper focuses on the 3D CAD implementation of the pipework and the main equipment of the Primary Heat Transfer System of EU-DEMO fusion power plant. In particular, the systems related to the Helium-Cooled Pebble Bed Breeding Blanket option are considered here. During the pulse operation, the breeding blanket modules will be the main thermal power source; Divertor and the Vacuum Vessel will contribute in the definition of the total reactor power. All the In-Vessel generated power is rejected to the Power Conversion System through a molten salt Intermediate Heat Transport System. The latter is equipped with an Energy Storage System to allow for continuous operation also during t…

Continuous operation020209 energyNuclear engineeringThermal power station02 engineering and technologyBlanket01 natural sciences7. Clean energyPrimary heat transfer systemEnergy storage010305 fluids & plasmasITER0103 physical sciences0202 electrical engineering electronic engineering information engineeringGeneral Materials ScienceCivil and Structural EngineeringPipingMechanical EngineeringDivertorPiping designCoolantEU-DEMONuclear Energy and EngineeringHeat transferEnvironmental scienceHelium-Cooled Pebble Bed Breeding BlanketFusion Engineering and Design
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HEXCALIBER TEST SECTION. Preliminary thermo-mechanical analysis

2007

NUCLEAR FUSION PEBBLE BEDS HEXCALIBER MOCK-UP
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Status of ceramic breeder pebble bed thermo-mechanics R&D and impact on breeder material mechanical strength

2012

Abstract Among the international fusion solid breeder blanket community, there exists steady progress on the experimental, phenomenological, and numerical characterizations of the pebble bed effective thermo physical and mechanical properties, and of thermomechanic state of the bed under prototypical operating conditions. This paper summarizes recent achievements in pebble bed thermomechanics that were carried out by members of the IEA Fusion Nuclear Technology Subtask I Solid Breeding Blanket. A major goal is on developing predictive capability while identifying a pre-conditioned equilibrium stress state that would warrant pebble bed integrity during operations. The paper reviews and synth…

Computer scienceMechanical EngineeringNuclear engineeringPredictive capabilityBlanketCeramic breeder Pebble bed Thermomechanics Phenomenological models Solid breeder blanket designBreeder (animal)Nuclear Energy and Engineeringvisual_artBenchmark (surveying)Mechanical strengthvisual_art.visual_art_mediumGeneral Materials ScienceCeramicPebbleSettore ING-IND/19 - Impianti NucleariCivil and Structural Engineering
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Thermo-mechanical experiment and analysis on an HCPB-TBM mock-up

2008

HCPB-TBM Pebble bed Constitutive model
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Advancements in the Helium-Cooled Pebble Bed Breeding Blanket for the EU DEMO: Holistic Design Approach and Lessons Learned

2019

The helium-cooled pebble bed (HCPB) blanket is one of the two concepts proposed as a driver blanket for the European Union Demonstration Fusion Power Reactor (EU DEMO). In contrast to past conceptual design studies, in the frame of the current Power Plant Physics and Technology of the EUROfusion Consortium, the ongoing EU DEMO preconceptual design activities have adopted a holistic and integrated (i.e., systems engineering) design approach. As a consequence of this new approach, many interfaces and requirements have been identified, some of them driving the design of the blankets. This paper shows the advancements in the HCPB breeding blanket and describes the lessons learned after implemen…

Nuclear and High Energy Physics020209 energyNuclear engineering02 engineering and technologyBlanket01 natural sciences7. Clean energy010305 fluids & plasmasTritium breeding ratio0103 physical sciences0202 electrical engineering electronic engineering information engineeringmedia_common.cataloged_instanceGeneral Materials ScienceHolistic designEuropean unionPebbleDEMOtritium breedingCivil and Structural Engineeringmedia_commonMechanical EngineeringFusion powertritium breeding ratioHelium-cooled pebble bedNuclear Energy and EngineeringEnvironmental sciencefuel-breeder pin
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