Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor

doi:10.1016/j.nucengdes.2017.01.019

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor
	Wu, JH; Guo, C; Cai, XZ; Yu, CG; Zou, CY; Han, JL; Chen, JG
	2017
发表期刊	NUCLEAR ENGINEERING AND DESIGN
ISSN	0029-5493
卷号	314 页码:318-325
文章类型	期刊论文
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.
关键词	Molten Salt Reactor Core Burnup Flow Effect
DOI	10.1016/j.nucengdes.2017.01.019
收录类别	SCI
语种	英语
WOS记录号	WOS:000396947800028
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/27328
专题	中科院上海应用物理研究所2011-2018年
推荐引用方式 GB/T 7714	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,2017,314:318-325.
APA	Wu, JH.,Guo, C.,Cai, XZ.,Yu, CG.,Zou, CY.,...&Chen, JG.(2017).Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor.NUCLEAR ENGINEERING AND DESIGN,314,318-325.
MLA	Wu, JH,et al."Flow effect on I-135 and Xe-135 evolution behavior in a molten salt reactor".NUCLEAR ENGINEERING AND DESIGN 314(2017):318-325.

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