Performance evaluation of ultra-long lithium heat pipe using an improved lumped parameter model
文献类型：期刊论文
| 作者 | Hu, Chong-Ju1,2,3; Yu, Da-Li2; He, Mei-Sheng2 ; Mei, Hua-Ping2; Yu, Jie2; Li, Tao-Sheng2
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| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
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| 出版日期 | 2021-12-01 |
| 卷号 | 32 |
| 关键词 | Lithium heat pipe Bending effect Marangoni effect Capillary limit Heat Pipe-Segmented Thermoelectric Module Converters (HP-STMC) |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-021-00980-1 |
| 通讯作者 | Yu, Da-Li(dlyu@inest.cas.cn) |
| 英文摘要 | Lithium heat pipes have broad applications in heat pipe cooling reactors and hypersonic vehicles owing to their ultra-high working temperature. In particular, when the length of the lithium heat pipe is ultra-long, the flow and heat transfer characteristics are more complex. In this study, an improved lumped parameter model that considers the Marangoni effect, bending effect, and different vapor flow patterns and Mach numbers was developed. Thereafter, the proposed model was verified using the University of New Mexico's Heat Pipe and HTPIPE models. Finally, the verified model was applied to simulate the steady-state operation of an ultra-long lithium heat pipe in a Heat Pipe-Segmented Thermoelectric Module Converters space reactor. Based on the results: (1) Vapor thermal resistance was dominant at low heating power and decreased with increasing heating power. The vapor flow inside the heat pipe developed from the laminar to the turbulent phase, whereas the liquid phase in the heat pipe was always laminar. (2) The vapor pressure drop caused by bending was approximately 22-23% of the total, and the bending effect on the liquid pressure drop could be ignored. (3) The Marangoni effect reduced the capillary limit by hindering the liquid reflux, especially at low vapor temperatures. Without considering the Marangoni effect, the capillary limit of the lithium heat pipe was overestimated by 9% when the vapor temperature was 1400 K. (4) The total thermal resistance of the heat pipe significantly increased with increasing adiabatic length when the vapor temperature was low. Further, the wick dryness increased with increasing adiabatic length at any vapor temperature. Such findings improve on current knowledge for the optimal design and safety analysis of a heat pipe reactor, which adopts ultra-long lithium heat pipes. |
| WOS关键词 | WICK |
| 资助项目 | CASHIPS Director's Fund[YZJJ2021QN36] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-KT-2019-1-0202] |
| WOS研究方向 | Nuclear Science & Technology ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000730179200001 |
| 出版者 | SPRINGER SINGAPORE PTE LTD |
| 资助机构 | CASHIPS Director's Fund ; Key Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126428]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Yu, Da-Li |
| 作者单位 | 1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Nucl Energy Safety Technol, Hefei 230031, Peoples R China 3.Suzhou Univ, Suzhou 234000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Chong-Ju,Yu, Da-Li,He, Mei-Sheng,et al. Performance evaluation of ultra-long lithium heat pipe using an improved lumped parameter model[J]. NUCLEAR SCIENCE AND TECHNIQUES,2021,32. |
| APA | Hu, Chong-Ju,Yu, Da-Li,He, Mei-Sheng,Mei, Hua-Ping,Yu, Jie,&Li, Tao-Sheng.(2021).Performance evaluation of ultra-long lithium heat pipe using an improved lumped parameter model.NUCLEAR SCIENCE AND TECHNIQUES,32. |
| MLA | Hu, Chong-Ju,et al."Performance evaluation of ultra-long lithium heat pipe using an improved lumped parameter model".NUCLEAR SCIENCE AND TECHNIQUES 32(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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