Thermo-mechanical analyses and assessment with respect to the design codes and standards of the HCPB-TBM Breeder Unit

Hernández, Francisco A.; Cismondi, F.; Kiss, Béla

doi:10.1016/j.fusengdes.2012.02.088

Cited by 23 publications

(6 citation statements)

References 10 publications

(13 reference statements)

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“…Results in 3.2 indicate that the maximum temperature of the ceramics pebble bed, the beryllium and RAFMS CPs is about 845, 806 and 781 K, within the temperature limit of 1193, 923 and 823 K [6]. Tritium generated in the BU is extracted by He with H2 (0.1 %) through isotope exchange between Hydrogen and tritium.…”

Section: Results Discussion and Optimizationmentioning

confidence: 93%

Thermal–Hydraulic Analysis and Optimization of HCPB Breeder Unit for Future Fusion Reactor

Wang

Changqi

et al. 2014

J Fusion Energ

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China has proposed several concepts of breeder blanket for future fusion reactor, one of which is the helium-cooled pebble bed (HCPB) blanket. HCPB blanket is a cellular design with solid breeder units (BUs) and other structural components to achieve its functional requirements. BU of the HCPB blanket consists of lithium ceramic breeders and beryllium pebble beds separated by cooling plates (CPs). Thermal-hydraulic analyses using ANSYS CFX have been done to measure the thermal performance of the designed BUs. The temperature distribution in structural and functional materials is obtained and cooling optimization is proposed according to the computational results. Results of BU cooling optimization indicate that the bed temperature is high enough to realize a good tritium release and extraction environment meanwhile maximum temperatures of different materials meet their thermal limits well. Details of BU thermal hydraulic analysis and cooling optimization are presented in this paper.

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Section: Results Discussion and Optimizationmentioning

confidence: 93%

Thermal–Hydraulic Analysis and Optimization of HCPB Breeder Unit for Future Fusion Reactor

Wang

Changqi

et al. 2014

J Fusion Energ

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“…A comparison is made between the predicted defect chemistry where the temperature effects are included in the energies for the references states and where they are not. This is important due to the high operational temperatures anticipated in breeder blanket materials, which have a maximum operational temperature of 920 °C for the ceramic in HCPB designs …”

Section: Resultsmentioning

confidence: 99%

“…This is important due to the high operational temperatures anticipated in breeder blanket materials, which have a maximum operational temperature of 920 °C for the ceramic in HCPB designs. 39 Under Li 2 O-rich conditions (Figure 8), charged lithium vacancy defects are the dominant type of defect across the entire temperature range, which is significant as the lithium vacancy may act as a trapping site for tritium. 40 The method of charge compensation, however, is shown to be different when including temperature effects for the reference states.…”

Section: Thementioning

confidence: 99%

High-Temperature Intrinsic Defect Chemistry of Li₈PbO₆ Ceramic Breeding Material

Davies,

Neilson,

Bedford

et al. 2023

J. Phys. Chem. C

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“…Figure shows the temperature distribution of the BU. It reveals that the maximum temperature of the lithium ceramic pebble bed is about 845 K, the beryllium 806 K and the RAFM steel 816 K. The peak temperatures on three different materials are within the corresponding temperature allowable limits [] (Li 4 SiO 4 ≤ 920°C, Be ≤ 650°C, RAFM steel≤ 550 °C). Because of the maximum temperature of lithium ceramic pebble bed far below the design limit, plat cooling plate in lithium ceramic pebble is removed to simplify the cooling system, as shown in Figure .…”

Section: Thermal Hydraulic Calculationmentioning

confidence: 96%

Thermal hydraulic analysis of the HECLIC blanket breeder unit for CFETR

Lei

Song

2014

Int. J. Energy Res.

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SUMMARYChina Fusion Engineering Test Reactor (CFETR) is proposed by the China National Integration Design Group. A heliumcooled lithium ceramic (HECLIC) blanket for CFETR has been designed by Institute of Plasma Physics Chinese Academy of Sciences (ASIPP) and University of Science and Technology of China (USTC). The HECLIC blanket includes the tungsten armor, first wall (FW), breeder units (BUs), caps, stiffening grids and back plates. The BU consists of the beryllium pebble beds, lithium ceramic pebble beds and cooling plates. The stiffening grid reinforces the blanket structure and also cools the BU together with cooling plates. Thermal hydraulic analysis has been performed to assess the heat transfer coefficient (HTC) and temperature distribution. The results indicate that the velocity is fairly uniform in the cooling loops, and the HTC is high enough to remove the heat timely. The maximum temperatures are within the design temperature limits. Besides, optimization has been done to improve the layout of the cooling channels. In addition, thermal mechanical analysis has been carried out. The maximum stress can satisfy design limits, and it proves the feasibility of the design.

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Thermo-mechanical analyses and assessment with respect to the design codes and standards of the HCPB-TBM Breeder Unit

Cited by 23 publications

References 10 publications

Thermal–Hydraulic Analysis and Optimization of HCPB Breeder Unit for Future Fusion Reactor

Thermal–Hydraulic Analysis and Optimization of HCPB Breeder Unit for Future Fusion Reactor

High-Temperature Intrinsic Defect Chemistry of Li₈PbO₆ Ceramic Breeding Material

Thermal hydraulic analysis of the HECLIC blanket breeder unit for CFETR

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Thermo-mechanical analyses and assessment with respect to the design codes and standards of the HCPB-TBM Breeder Unit

Cited by 23 publications

References 10 publications

Thermal–Hydraulic Analysis and Optimization of HCPB Breeder Unit for Future Fusion Reactor

Thermal–Hydraulic Analysis and Optimization of HCPB Breeder Unit for Future Fusion Reactor

High-Temperature Intrinsic Defect Chemistry of Li8PbO6 Ceramic Breeding Material

Thermal hydraulic analysis of the HECLIC blanket breeder unit for CFETR

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High-Temperature Intrinsic Defect Chemistry of Li₈PbO₆ Ceramic Breeding Material