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题名:
Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor
作者: Wu, JH; Guo, C; Cai, XZ; Yu, CG; Zou, CY; Han, JL; Chen, JG
刊名: NUCLEAR ENGINEERING AND DESIGN
出版日期: 2017
卷号: 314, 页码:318-325
关键词: Molten salt reactor ; Core burnup ; Flow effect
DOI: 10.1016/j.nucengdes.2017.01.019
文章类型: 期刊论文
英文摘要: Molten Salt Reactor (MSR) employs fissile material dissolved in the fluoride salt as fuel which continuously circulates through the primary loop with the flow cycle time being a few tens of seconds. The nuclei evolution law is quite different from that in a solid fuel reactor. In this paper, we analytically deduce the nuclei evolution law of Xe-135 and I-135 which are entrained in the flowing salt, evaluate its concentration changing with the bumup time, and validate the result with the SCALE6. The circulation of fuel salt could decrease the concentration of Xe-135 and I-135, and the reduction can achieve to around 40% and 50% for Xe-135 and I-135 respectively at a small power level (e.g., 2 MW) when the core has the same fuel salt volume as that of the outer-loop. Furthermore, it can be found that the reduction is inversely proportional to the core to outer-loop volume ratio, but uncorrelated with the mass flow rate under normal operating condition of a MSR. At low core power scale, the flow effect on Xe-135 concentration reduction is apparent, but it is mitigated as the core power scale increases because of the rise of I-135 concentration, which raises its decay to Xe-135 and compensates the loss of Xe-135 due to decay at the outer-loop. The decreased Xe-135 concentration results in a core reactivity increase varying from around 150 pcm to 1000 pcm depending on the core power and core to outer-loop volume ratio. (C) 201 7 Elsevier B.V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000396947800028
ISSN号: 0029-5493
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/27328
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Wu, JH,Guo, C,Cai, XZ,et al. Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor[J]. NUCLEAR ENGINEERING AND DESIGN,2017-01-01,314:318-325.
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文件名: Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor.pdf
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