Research on the effect of the heavy nuclei amount on the temperature reactivity coefficient in a small modular molten salt reactor
文献类型：期刊论文
| 作者 | Tan, ML; Zhu, GF; Zou, Y; Yu, XH; Dai, Y |
| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2019 |
| 卷号 | 30期号:9页码:- |
| 关键词 | OPTIMIZATION |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-019-0666-3 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Small modular thorium-based graphite-moderated molten salt reactors (smTMSRs), which combine the advantages of small modular reactors and molten salt reactors, are regarded as a wise development path to speed deployment time. In a smTMSR, low enriched uranium and thorium fuels are used in once-through mode, which makes a marked difference in their neutronic properties compared with the case when a conventional molten salt breeder reactor is used. This study investigated the temperature reactivity coefficient (TRC) in a smTMSR, which is mainly affected by the molten salt volume fraction (VF) and the heavy nuclei concentration in the fuel salt (HN). The four-factor formula method and the reaction rate method were used to indicate the reasons for the TRC change, including the fuel density effect, the fuel Doppler effect, and the graphite thermal scattering effect. The results indicate that only the fuel density has a positive effect on the TRC in the undermoderated region. Thermal scattering from both salt and graphite has a significant negative influence on the TRC in the overmoderated region. The maximal effective multiplication factor, which shows the highest fuel utilization, is located at 10% VF and 12 mol% HN and is still located in the negative TRC region. In addition, on increasing the heavy nuclei amount from 2 mol% HN to 12 mol% HN (VF = 10%), the total TRC undergoes an obvious change from - 11 to - 3 pcm/K, which implies that the change in the HN caused by the fuel feed online should be small to avoid potential trouble in the reactivity control scheme. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32187]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tan, ML,Zhu, GF,Zou, Y,et al. Research on the effect of the heavy nuclei amount on the temperature reactivity coefficient in a small modular molten salt reactor[J]. NUCLEAR SCIENCE AND TECHNIQUES,2019,30(9):-. |
| APA | Tan, ML,Zhu, GF,Zou, Y,Yu, XH,&Dai, Y.(2019).Research on the effect of the heavy nuclei amount on the temperature reactivity coefficient in a small modular molten salt reactor.NUCLEAR SCIENCE AND TECHNIQUES,30(9),-. |
| MLA | Tan, ML,et al."Research on the effect of the heavy nuclei amount on the temperature reactivity coefficient in a small modular molten salt reactor".NUCLEAR SCIENCE AND TECHNIQUES 30.9(2019):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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