Oscillating flow behavior of a natural circulation loop using minichannels at atmospheric pressure
文献类型：期刊论文
| 作者 | Xu, JL; Gan, YH |
| 刊名 | applied thermal engineering
 |
| 出版日期 | 2004-12-01 |
| 卷号 | 24期号:17-18页码:2665-2677 |
| 关键词 | natural circulation loop minichannel oscillating liquid flow periodic liquid/two-phase alternate flow electronic cooling |
| 英文摘要 | natural circulation loops at the macroscale have been widely applied in the passive cooling of nuclear power plant. however, little has been done on the miniaturized natural circulation loop for electronic cooling. the present study is to develop a miniaturized natural circulation loop consisting of an evaporator, a condenser, a riser (vapor line) and a downcomer (liquid line). heat is dissipated from the heated chip to the evaporator, and transferred to the condenser by the air natural convection. the working fluid is selected as methanol. it is demonstrated that the system can dissipate the heating power up to 80 w with the temperatures of a simulated heated chip less than 73 degreesc. with the heating power varying from 10 to 80 w, the loop operates from the oscillating liquid flow to the periodic liquid/two-phase alternate flow. the thermal oscillatings of the simulated heating chip are always random. however, the inlet/outlet fluid temperatures and pressures display periodic oscillating behavior. a single full cycle is identified by the parameter traces and the simple flow visualizations by the naked eye to have three stages: liquid flow stage, sensible heat receiving stage, boiling two-phase discharging stage. these have clear switch points. the oscillating time period can be as long as 57 s at the heating power of 30 w, and is sharply decreased with increasing heating power. it is also shown that the mean wall temperatures only slightly increase with the increasing heating power, providing the better performance of the present natural circulation loop using minichannels at atmospheric pressure. (c) 2004 elsevier ltd. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | thermodynamics ; energy & fuels ; engineering, mechanical ; mechanics |
| 研究领域[WOS] | thermodynamics ; energy & fuels ; engineering ; mechanics |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000224654300015 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10196]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, JL,Gan, YH. Oscillating flow behavior of a natural circulation loop using minichannels at atmospheric pressure[J]. applied thermal engineering,2004,24(17-18):2665-2677. |
| APA | Xu, JL,&Gan, YH.(2004).Oscillating flow behavior of a natural circulation loop using minichannels at atmospheric pressure.applied thermal engineering,24(17-18),2665-2677. |
| MLA | Xu, JL,et al."Oscillating flow behavior of a natural circulation loop using minichannels at atmospheric pressure".applied thermal engineering 24.17-18(2004):2665-2677. |
入库方式： OAI收割
来源：广州能源研究所
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