Hernández, Francisco

Kang, Qinlan

Pereslavtsev, Pavel

Zhou, Guangming

English

KITopen

Progress on performances of Helium Cooled Molten Lead Ceramic Breeder, as a near-term alternative blanket for EU-DEMOInstitute for Neutron Physics and Reactor Technology (INR), Karlsruhe Institute of Technology (KIT), 76344 Eggenstein-Leopoldshafen, Germany*guangming.zhou@kit.eduGuangming Zhou*, Francisco A. Hernández, Qinlan Kang, Pavel PereslavtsevP1.186Introduction Helium Cooled Molten Lead Ceramic Breeder (HC-MLCB) solid breeder blanket being developed as near-term alternative blanketfor the new European DEMO (DEMO BL2017). Based on “fission-like fuel-breeder pin” configuration, HC-MLCB using Molten Lead as neutron multiplier, Advanced CeramicBreeder as tritium breeder, pressurized helium as coolant, EUROFER 97 as structural material. Basic nuclear and thermo-hydraulic and thermo-mechanical performance are conducted and presented.Features of Design Results and AnalysisConclusionsThis work has been carried out within the framework of theEUROfusion Consortium and has received funding from theEuratom research and training programme 2014-2018 undergrant agreement No 633053. The views and opinionsexpressed herein do not necessarily reflect those of theEuropean Commission. The authors also acknowledge thesupport by the state of Baden-Wuerttemberg through bwHPC.KIT – The Research University in the Helmholtz Associationwww.kit.eduNeutronics analysis IB/OB BZ radial build: 0.38/0.61 m Tritium Breeding Ratio: 1.17 (1.13) Nuclear heating in Fig. 3 Thermal power by MLCB: 1.96 GW The basic structure and thermal hydraulic scheme of the newlyproposed MLCB breeding blanket have been described. Results show that the current MLCB meets the basic nuclear andthermo-mechanic-hydraulic requirements, setting the path for aconsolidated design of this concept.Fig. 2 Schematic flow scheme of the current MLCB 16 Blanket Sector in EU DEMO BL2017 Single Module Segment (SMS), facilitates the filling and draining of the molten lead, but also increases the tritium breeding performance Fission-like fuel-breeder pin configuration Molten Lead as neutron multiplier Helium as coolant, inlet/outlet temperature:300/520 °CFig. 3 Power densities of different materials Fig. 4 Design iterations of BSSFig. 5 Primary stress under in-box LOCAFig. 6 Temperature distribution of typical MLCB unit sliceFig. 8 P+Q stresses of typical MLCB sliceTM analysis at in-box LOCA BSS design be iterated based on TM analysis under in-box LOCA Optimized BSS desgin fulfils damage modes induced by primary stresses under RCC-MRx rules TH analysis at normal cond. Maximal temperatures are 822.8, 550.9 and 627.6 °C for ACB, EUROFER and molten lead Temperatures within design limits Temperature distribution in Fig. 6PHTS hydraulics Max. pressure drop reduced to 2.9 and 3.11 bar for OB and IB One blower carries 3.2~4.8 MW circ. power Achievable based on existing High Temperature Reactor blower technologyTM analysis at normal cond. Robust global structural performance at FW, BZ, BSS.  Improvement needed for connecting regions of BZ and BSSsee P1.175see P4.161Fabrication of fuel-pin mock-upsee P4.162Manufacturing status of gas cooled FWFig. 7 Streamline at inboard BZ outlet manifoldFig. 1 MLCB integrated in EU DEMO BL2017 sector

Progress on performances of Helium Cooled Molten Lead Ceramic Breeder, as a near-term alternative blanket for EU-DEMO

https://publikationen.bibliothek.kit.edu/1000081754/18015018

Progress on performances of Helium Cooled Molten Lead Ceramic Breeder, as a near-term alternative blanket for EU-DEMO

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