Design consideration and performance analysis of supercritial water reactor fuel assembly
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摘要: 开展SCWR燃料组件性能分析及设计论证，分析研究SCWR组件设计目标，对比分析各类组件设计理念的物理热工性能与结构可实现性，论证选取综合性能优化的SCWR燃料组件方案。组件选型论证研究表明，大水棒方形组件方案采用结构设计较为简单的单水棒、组合式方形燃料组件，能够为燃料元件提供充分、均匀的慢化，而且慢化剂和冷却剂分流简单，具备良好的物理热工性能与结构可实现性，满足SCWR组件设计目标。Abstract: This paper studies the performance analysis and design consideration of the supercritial water reactor(SCWR) fuel assembly(FA). The SCWR fuel design goal is also studied. A comparative analysis is made for different fuel assembly design on the neutronics/thermal- hydraulics performance and the implementability of structure. The study shows that the square FA with big water rod adopting the simple structure of combined square FA with single water rod can provide not only sufficient and uniform moderation of fuel but also a simple split-flow of the moderator and coolant. This design shows a good neutronics and thermal-hydraulics performance and implementability, which is a good choice for SCWR fuel assembly design.
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