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Nucleate Pool Boiling Heat Transfer on a Micro-Pin-Finned Surface in Short-Term Microgravity
Zhang YH; Zhao JF(赵建福); Wei JJ; Xue YF; Wei, JJ (reprint author), Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China.
Source PublicationHEAT TRANSFER ENGINEERING
2017
Volume38Issue:6Pages:594-610
ISSN0145-7632
AbstractNucleate boiling heat transfer of air-dissolved FC-72 on a micro-pin-finned surface was experimentally investigated in microgravity by utilizing the drop tower facility in Beijing. The dimensions of the silicon chips were 10mm x 10mm x 0.5mm and on these, two kinds of micro-pin-fins with the dimensions of 30 x 30 x 60m(3) and 50 x 50 x 120m(3) (width x thickness x height, named PF30-60 and PF50-120) were fabricated by the dry etching technique. Nucleate pool boiling on a smooth surface was also studied under both Earth gravity and microgravity for comparison. In general, the micro-pin-fins showed better heat transfer performance when compared with a smooth surface, both under Earth gravity and microgravity. In microgravity, this is mainly due to the fact that bubbles generated on micro-pin-finned surface can depart from the heater surface continuously. For micro-pin-fins, the reduced-gravity critical heat flux was about two-thirds of that in the Earth gravity experiment, but almost three times as large as that for the smooth surface, which is larger than that in the terrestrial experiment. Under different gravity levels, PF50-120 shows a little better heat transfer than that of PF30-60, mainly due to larger heat transfer area. Besides, the fin gap of PF30-60 may generate a larger flow resistance for microconvection around the fin side walls, resulting in a lower heat transfer performance.
DOI10.1080/01457632.2016.1200377
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000392434900003
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
Funding OrganizationThis work is supported financially by the National Natural Science Foundation of China under grants 51225601, 51506169, and 11372327, and the Key Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Sciences, for short-term microgravity experiments utilizing the Beijing drop tower. It is also supported by the scientific research program for new lecturers of Xi'an Jiaotong University (number DW010728K000000B) and a China Postdoctoral Science Foundation-funded project (number 2015M582653).
DepartmentNML微重力两相流与燃烧
ClassificationQ3
Ranking2
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60111
Collection国家微重力实验室
Corresponding AuthorWei, JJ (reprint author), Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China.
Recommended Citation
GB/T 7714
Zhang YH,Zhao JF,Wei JJ,et al. Nucleate Pool Boiling Heat Transfer on a Micro-Pin-Finned Surface in Short-Term Microgravity[J]. HEAT TRANSFER ENGINEERING,2017,38(6):594-610.
APA Zhang YH,赵建福,Wei JJ,Xue YF,&Wei, JJ .(2017).Nucleate Pool Boiling Heat Transfer on a Micro-Pin-Finned Surface in Short-Term Microgravity.HEAT TRANSFER ENGINEERING,38(6),594-610.
MLA Zhang YH,et al."Nucleate Pool Boiling Heat Transfer on a Micro-Pin-Finned Surface in Short-Term Microgravity".HEAT TRANSFER ENGINEERING 38.6(2017):594-610.
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