激光制备针翅微热管与传热实验研究
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摘要
电子产品快速发展同时导致了热量高等问题,为了延长电子产品使用寿命,研究平板微热管的传热性能是解决该问题的关键。为了研究激光制备针翅平板微热管的传热性能,首先采用理论建模确定针翅最优结构,然后通过激光制备针翅平板微热管,最后通过实验研究倾角、工作液体、充液率以及槽道结构等因素对针翅平板微热管传热性能的影响,并以温差、热阻以及当量导热系数作为评价针翅平板微热管传热性能指标。结果表明:以水为工作液体,倾斜角度为90°,且在充液率为45%时的针翅平板微热管的传热性能最佳。
With the rapid of electronics products,it is easy to result in problems of high heat and so on,to extend the life of electronics products,studying the heat transfer performance of flat pin-fin micro-heat pipe is the key to solve this problem.In order to study the heat transfer performance of flat pin-fin micro-heat pipe by laser making,the most optimal structure is at firstly obtained by theoretical model of the flat pin-fin micro-heat pipe constructed,and then the flat pin-fin micro-heat pipe has been fabricated by laser,at last effect of slope angel,working fluid,liquid filling ratio and micro structure on the heat transfer performance of flat pin-fin micro-heat pipe was experimentally studied and used temperature difference,thermal resistance,equivalent thermal conductivity as the evaluation index. The results indicate that the heat transfer performance of flat pin-fin micro-heat pipe is optimum at 45% of liquid filling ratio,90° of slope angel,water of working fluid.
With the rapid of electronics products,it is easy to result in problems of high heat and so on,to extend the life of electronics products,studying the heat transfer performance of flat pin-fin micro-heat pipe is the key to solve this problem.In order to study the heat transfer performance of flat pin-fin micro-heat pipe by laser making,the most optimal structure is at firstly obtained by theoretical model of the flat pin-fin micro-heat pipe constructed,and then the flat pin-fin micro-heat pipe has been fabricated by laser,at last effect of slope angel,working fluid,liquid filling ratio and micro structure on the heat transfer performance of flat pin-fin micro-heat pipe was experimentally studied and used temperature difference,thermal resistance,equivalent thermal conductivity as the evaluation index. The results indicate that the heat transfer performance of flat pin-fin micro-heat pipe is optimum at 45% of liquid filling ratio,90° of slope angel,water of working fluid.
引文
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[2]谢添锦,谢晋.微沟槽热管传热性能实验研究[J].机械设计与造,2010(6):106-108.(Xie Tian-jin,Xie Jin.Experimental research on heat transfer performance of micro-groovedheat pipe[J].Machinery Design&Manufacturing,2010(6):106-108.)
[3]Tang Y,Chen P,Wang X.Experimental investigation into the performance of heat pipe with micro grooves fabricated by Extrusion-ploughing process[J].Energy Conversion&Management,2010,51(10):1849-1854.
[4]唐吉仁.不等宽微槽道平板热管的研制[D].大连:大连理工大学,2010.(Tang Ji-ren.Development of flat heat pipe with non-constant width micro-channels[D].Dalian:Dalian University of Technology,2010.)
[5]Li C M,Luo Y,Zhou C P.Experimental investigation of thermal conduction performance on silicon-based micro flat heat pipe[J].Key Engineering Materials,2015(645-646):1032-1037.
[6]Yi P,Liu W,Liu B.The performance of the novel vapor chamber basedon the leaf vein system[J].International Journal of Heat&Mass Transfer,2015(86):656-666.
[7]方晓明,万珍平,汤勇.微热管轴向微沟槽高速充液旋压成形实验研究[J].机械科学与技术,2011(5):727-731.(Fang Xiao-ming,Wan Zhen-ping,Tang Yong.Experimental study of axial micro-grooves of micro-heatpipe forming via high-speed oil-filled spinning[J].Mechanical Science and Technology for Aerospace Engineering,2011,30(5):727-731.)
[8]Liu Y B.Finite element thermal analysis on heat transfer performance of rectangular micro-groove flat heat pipe[J].Advanced Materials Research,2013(721):456-460.
[9]UJEREH S,FISHER T,MUDAWAR I.Effects of carbon nanotube arrays on nucleate pool boiling[J].International Journal of Heat and Mass Transfer,2007(50):4023-4038.
[10]肖宏志,刘一兵.微型热管传热极限的研究[J].低温与超导,2010(5):76-78.(Xiao Hong-zhi,Liu Yi-bing.The investigation on heat pipe transfer limit of micro heat pipe[J].Cryogenics and Superconductivity,2010(5):76-78.)