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
Source PublicationNUCLEAR ENGINEERING AND DESIGN
ISSN0029-5493
Volume314Pages:318-325
Subtype期刊论文
AbstractMolten 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.
KeywordMolten Salt Reactor Core Burnup Flow Effect
DOI10.1016/j.nucengdes.2017.01.019
Indexed BySCI
Language英语
WOS IDWOS:000396947800028
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27328
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
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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