Characteristics of the laminar convective heat transfer of molten salt in concentric tube
文献类型：期刊论文
| 作者 | Chen, YS; Tian, J; Sun, SD; Sun, Q; Fu, Y; Tang, ZF; Zhu, HH; Wang, NX |
| 刊名 | APPLIED THERMAL ENGINEERING
 |
| 出版日期 | 2017 |
| 卷号 | 125期号:-页码:995-1001 |
| 关键词 | Natural-convection Forced-convection Horizontal Tubes Flow Receiver Storage Region Pipe |
| ISSN号 | 1359-4311 |
| DOI | 10.1016/j.applthermaleng.2017.07.043 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In this paper, laminar convective heat transfer performance of molten salt with Reynolds number of 300-2300 and Grashof number of 8.56 x 10(4)-3.95 x 10(6) in a concentric tube heat exchanger is reported. The effects of temperature on the heat transfer coefficient of molten salt are experimentally studied with the temperature of 473 K-573 K. Results show that the measured Nusselt number is larger than that predicted by pure forced convective heat transfer correlations and the deviations decrease as Reynolds number increases. In addition, the experimental result displays a completely different dependence on the temperature from forced convective correlations. It is presumably that the radial density gradient gives rise to buoyancy motion resulting in the formation of natural convection and then strengthen the heat transfer performance in laminar region. By comparison, it is found that the experimental result follows the trend of laminar convective heat transfer correlations derived from traditional working medium, however, the traditional correlations cannot describe the molten salt adequately. Therefore, based on the experimental results and existing correlations, an improved correlation composed of forced convection term and pure natural convection term is proposed, and shows a good agreement with the experiment data with deviations less than +/- 15%. (C) 2017 Elsevier Ltd. All rights reserved. |
| WOS关键词 | NATURAL-CONVECTION ; FORCED-CONVECTION ; HORIZONTAL TUBES ; FLOW ; RECEIVER ; STORAGE ; REGION ; PIPE |
| 语种 | 英语 |
| WOS记录号 | WOS:000410011200090 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28573]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Chen, YS,Tian, J,Sun, SD,et al. Characteristics of the laminar convective heat transfer of molten salt in concentric tube[J]. APPLIED THERMAL ENGINEERING,2017,125(-):995-1001. |
| APA | Chen, YS.,Tian, J.,Sun, SD.,Sun, Q.,Fu, Y.,...&Wang, NX.(2017).Characteristics of the laminar convective heat transfer of molten salt in concentric tube.APPLIED THERMAL ENGINEERING,125(-),995-1001. |
| MLA | Chen, YS,et al."Characteristics of the laminar convective heat transfer of molten salt in concentric tube".APPLIED THERMAL ENGINEERING 125.-(2017):995-1001. |
入库方式： OAI收割
来源：上海应用物理研究所
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