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微重力下微结构表面强化沸腾换热研究
Alternative TitleBoiling Heat Transfer Enhancement by Using Micro-Structure Surface Under Microgravity
薛艳芳; 魏进家; 赵建福; 李晶; 郭栋; 万士昕
Source Publication工程热物理学报
2012-03-15
Volume33Issue:3Pages:441-444
ISSN0253-231X
Abstract为了提高航天器中电子器件的冷却效率,本文利用干式腐蚀方法形成方柱微结构,通过控制加热电流方法,在北京落塔进行了持续3.6 s有效微重力时间的过冷FC-72池沸腾强化换热实验研究。研究结果表明:相比光滑表面,方柱微结构表面利用其独立于重力水平的毛细作用力,显著地强化了微重力沸腾换热。
Other AbstractFor the purpose of cooling electronic devices in space systems with high heat flux efficiently, experiments of highly subcooled pool boiling of FC-72 on micro-pin-finned surface structure were studied in short-term microgravity utilizing Drop-Tower Beijing with duration of about 3.6 s. The micro-pin-fins were fabricated on the silicon chip surface with the dry etching technique. The silicon chip was heated by means of controlling heating dc current for the desired heat flux. The bubble behavior for a smooth surface was also provided for comparison. The results indicated that the performance of high efficient heat transfer on micro-pin-finned surface is independent of the gravity, which stems from the sufficient supply of fresh liquid to the heater surface due to the capillary forces.
Keyword池沸腾 微重力 方柱微结构 毛细作用力 强化换热
Subject Area微重力流体力学
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Indexed ByCSCD ; EI
Language中文
Funding Organization国家自然科学基金资助项目(No.10972225); 北京中科院国家微重力重点实验室落塔资助项目
CSCD IDCSCD:4476887
DepartmentNML微重力两相流与燃烧
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46430
Collection国家微重力实验室
Corresponding Author魏进家
Recommended Citation
GB/T 7714
薛艳芳,魏进家,赵建福,等. 微重力下微结构表面强化沸腾换热研究[J]. 工程热物理学报,2012,33(3):441-444.
APA 薛艳芳,魏进家,赵建福,李晶,郭栋,&万士昕.(2012).微重力下微结构表面强化沸腾换热研究.工程热物理学报,33(3),441-444.
MLA 薛艳芳,et al."微重力下微结构表面强化沸腾换热研究".工程热物理学报 33.3(2012):441-444.
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