摘要
超临界水冷快堆集快堆和轻水堆两种特性。整个堆芯冷却剂流量仅为现BWR的1/8,中子能谱硬于普通PWR,故有一定的核燃料增殖能力。本文建立不同Flower型超临界水冷快堆堆芯物理模型,研究堆芯分区布置、冷却剂密度分层、seed及blanket组件P/D值设计、MOX燃料设计、燃料富集度分区分层布置、blanket内部通道采用贫铀冷却等方案,分析堆芯的空泡反应性、功率分布及增殖比。通过比较,得到了超临界水冷快堆的优化设计方案。
Supercritical Water-cooled Fast Reactor （SCWFR） presents features of combining fast and light water reactor characteristics in one design. The coolant mass flow rate is just as 1/8 as in the BWR, and the neutron energy is harder than in PWR, so it would has the breeding ability. In this paper, using different models of improved Flower-SCWFR core, the void reactivity effect, power distribution, and breeding ratio are analyzed by core zoning scheme, axial coolant densities zoning, seed and blanket assembly with suitable P/D value, MOX fuel with different design and enrichment zoning, and solid uranium matrix cooled by internal clad channels in blanket assembly. Finally an optimized modal of the improved SCWFR cores-＂Flower type＂ is obtained.
出处
《核技术》
CAS
CSCD
北大核心
2012年第4期309-314,共6页
Nuclear Techniques
