On the effects of the Double-Walled Tubes lay-out on the DEMO WCLL breeding blanket module thermal behavior

被引：4
|
作者：
Forte, Ruggero [1 ]
Arena, Pietro [1 ]
Del Nevo, Alessandro [2 ]
Di Maio, Pietro Alessandro [1 ]
机构：
[1] Univ Palermo, Dipartimento Energia Ingn Informaz & Modelli Mate, Palermo, Italy
[2] ENEA CR Brasimone, Camugnano, Italy
来源：
FUSION ENGINEERING AND DESIGN | 2019年 / 146卷
关键词：
DEMO; WCLL; Breeding Blanket; DWTs; FEM; THERMOMECHANICAL BEHAVIOR; DESIGN; OPTIMIZATION; PROGRESS;
D O I：
10.1016/j.fusengdes.2019.01.105
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The EU-DEMO Water-Cooled Lithium Lead Breeding Blanket (WCLL BB) concept foresees liquid Pb-15.7Li eutectic alloy as breeder and neutron multiplier, whereas pressurized subcooled water as coolant, with operative conditions typical of the PWR fission reactors (temperature in the range of 295-328 degrees C and pressure of 15.5 MPa). The cooling down of the BB is guaranteed by means of two separated cooling circuits: the one consisted in square channels housed within the complex of Side Walls and First Wall, and the one composed of a set of Double-Walled Tubes (DWTs) submerged in the Breeding Zone (BZ) and deputed to remove heat power therein generated. A parametric thermal study has been carried out in order to optimize the DWTs lay-out within the BZ of the WCLL BB outboard equatorial region ensuring that EUROFER components maximum temperature stays below the allowable value of 550 degrees C. The analysis has been performed following a theoretical-numerical approach based on the Finite Element Method (FEM) and adopting the ABAQUS qualified commercial code. In the paper, results obtained together with the main assumptions adopted in the parametric analysis are critically discussed and a new, sustainable DWTs configuration is proposed.
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收藏
页码：883 / 886
页数：4
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