Numerical and experimental investigation of a new conceptual fluoride salt freeze valve for thorium-based molten salt reactor
文献类型：期刊论文
| 作者 | Jiang, XY; Lu, HJ; Chen, YS; Fu, Y; Wang, NX |
| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2020 |
| 卷号 | 31期号:2页码:- |
| 关键词 | NATURAL-CONVECTION |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-020-0729-5 |
| 文献子类 | 期刊论文 |
| 英文摘要 | To improve the reliability and reduce energy consumption, a conceptual design of a freeze valve is proposed for the thorium-based molten salt reactor (TMSR) concept. Fins were utilized in this new design to enhance heat transfer and realize passive shut-off function, which could not be realized by the previous design. An experimental apparatus using the fluoride salt FLiNaK was constructed to conduct a series of preliminary solidification and melting experiments. In addition, the enthalpy-porosity method of ANSYS(R) Fluent solver was applied to simulate the solidification process of the salt at a specified operating temperature. Temperature distributions of the fluoride salt, solidification/melting time, and frozen plug effect were analyzed under natural convection heat transfer in an open space. The calculated salt temperatures exhibited good agreement with the experimental values. The results indicated that the range of effective operating temperature is 530-600 degrees C for the finned freeze valve. In this study, the ideal set operating temperature of the finned freeze valve was chosen as 560 degrees C to achieve competent performance. Moreover, 560 degrees C is additionally the highest set operating temperature for maintaining excellent cooling performance and sustaining deep-frozen condition of the salt plug. At this set operating temperature, the simulation data indicated that the molten salt in the flat part of the finned freeze valve will completely solidify at 10.5 min. The percentage of solid salt in the flat and lower transitional parts of the valve reaches 29.60% in 30.0 min. Furthermore, the surface temperature of the proposed freeze valve is 11.10% lower compared with that of the TMSR freeze valve at a cooling gas supply of 173 m(3)/h. Therefore, the new freeze valve was proven to be capable of reducing the energy consumption and realizing the passive shut-off function. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/33046]  |
| 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, XY,Lu, HJ,Chen, YS,et al. Numerical and experimental investigation of a new conceptual fluoride salt freeze valve for thorium-based molten salt reactor[J]. NUCLEAR SCIENCE AND TECHNIQUES,2020,31(2):-. |
| APA | Jiang, XY,Lu, HJ,Chen, YS,Fu, Y,&Wang, NX.(2020).Numerical and experimental investigation of a new conceptual fluoride salt freeze valve for thorium-based molten salt reactor.NUCLEAR SCIENCE AND TECHNIQUES,31(2),-. |
| MLA | Jiang, XY,et al."Numerical and experimental investigation of a new conceptual fluoride salt freeze valve for thorium-based molten salt reactor".NUCLEAR SCIENCE AND TECHNIQUES 31.2(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。