期刊论文

Yu, T.

中文

核动力工程

0258-0926

2013

34

1

19-25

10.3969/j.issn.0258-0926.2013.01.005

本校为第一机构

建立改进型快谱超临界水冷堆(SCFR-M)堆芯模型,探讨点火区燃料棒直径和增殖区水棒直径对堆芯转换比的影响,得到合理的燃料组件设计形式。设计并计算6种不同堆芯布置的反应堆增殖特性和空泡反应性,并分析燃料中~(235)U和~(239)Pu成分对堆芯转换比和空泡系数的影响,提高了转换比;研究燃料成分对堆芯转换比的影响。结果表明:减小氢原子数与重金属原子数之比(H/HM),增加堆芯增殖燃料组件数目并采用合理布置可满足堆芯负空泡反应系数,且可以提高堆芯转换比;降低燃料中Pu同位素质量分数可以使堆芯转换比大幅增加,同时使堆芯的空泡反应性系数负值更大;当点火燃料组件采用Pu同位素质量分数为20.8%的MOX燃...

In this paper, an improved supercritical water cooled fast reactor has been established. At first, reasonable fuel assembly design is obtained by studying the influences of seed fuel pin diameter and blanket coolant channel diameter to conversion ratio (CR). Then, void reactivity coefficient and CR are calculated for six different core arrangements. Finally, the effect of 235U and 239Pu ratio on CR and void reactivity coefficient are analyzed for the sixth core arrangement design. The results show that, negative void reactivity coefficient can ...