Study on heat transfer properties of flat heat pipe with conical capillary wicks

被引：0

作者：

Li, Hongchuan ^{[1
,2
]}

Ji, Xianbing ^{[1
,2
]}

Zheng, Xiaohuan ^{[2
]}

Yang, Wolong ^{[2
]}

Xu, Jinliang ^{[1
,2
]}

机构：

[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing

[2] Beijing Key Laboratory of Multiphase Flow and Heat Transfer, North China Electric Power University, Beijing

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2015年 / 51卷 / 24期

关键词：

Capillary wick; Conical; Flat heat pipe; Heat transfer; Oxidation; Thermal resistance;

D O I：

10.3901/JME.2015.24.132

中图分类号：

学科分类号：

摘要：

With the development of mechanical and electronic equipments, thermal management problem becomes more and more challenging. In order to solve this problem, according to the bionics principle, a new structure flat heat pipe(FHP), based on the micro structure of the Calathea zebrine, using nano-scale copper powder as sintered material, is constructed with conical capillary wicks, and its thermal performance is investigated experimentally with deionized water used as the working fluid. The effect of heating power, inclination angle and capillary wicks through oxidation on thermal performance of the FHP are studied. The results show that the existence of the multi-scale pore gap of the conical capillary wicks not only realized the vapor escape from large pore gap and liquid suck from small pore gap, but also shortened the liquid flow path, and reduced the flow resistance, as well as expanded the heat transfer area, thus greatly improved the heat transfer performance of the FHP. The new structure FHP has good thermal and anti-gravity performance. Capillary wicks through oxidation can significantly reduce the FHP's thermal resistance, improving its thermal performance, and its minimum total thermal resistance is equal to 0.079 K/W when the heat flux reaches to 107.1 W/cm2. © 2015 Journal of Mechanical Engineering.

引用

页码：132 / 138

页数：6

共 19 条

[1] Shi W., Li W., Pan L., Et al., Study on heat transfer properties of aqueous ethanol pulsating heat pipe, Journal of Mechanical Engineering, 24, pp. 117-121, (2011)
[2] Zheng J., Zhang G., Cao X., Design and experiment for magnetorheological transmission device with heat pipes, Journal of Mechanical Engineering, 45, 7, pp. 305-311, (2009)
[3] Hansen G., Naess E., Kristjansson K., Sintered nickel powder wicks for flat vertical heat pipes, Energies, 8, 4, pp. 2337-2357, (2015)
[4] Peng Y., Liu W.Y., Wang N.L., Et al., A novel wick structure of vapor chamber based on the fractal architecture of leaf vein, International Journal of Heat And Mass Transfer, 63, pp. 120-133, (2013)
[5] Popova N., Schaeffer C., Avenas Y., Et al., Fabrication and thermal performance of a thin flat heat pipe with innovative sintered copper wick structure, Conference Record of the 2006 IEEE Industry Applications Conference, Forty-First Ias Annual Meeting, pp. 791-796, (2006)
[6] Kim S.S., Weibel J.A., Fisher T.S., Et al., Thermal performance of carbon nanotube enhanced vapor chamber wicks, Proceedings of the Asme International Heat Transfer Conference, 5, pp. 417-424, (2010)
[7] Cai Q.J., Chen C.L., Design and test of carbon nanotube biwick structure for high-heat-flux phase change heat transfer, Journal of Heat Transfer-Transactions, 132, 5, pp. 689-694, (2010)
[8] Vadakkan U., Chrysler G.M., Maveety J., A novel carbon nano-tube based wick structure for heat pipes/vapor chamber, Semiconductor Thermal Proceedings, 18-22, pp. 102-104, (2007)
[9] Weibel J.A., Garimella S.V., Murthy J.Y., Et al., Design of integrated nanostructured wicks for high-performance vapor chambers, IEEE Transactions on Components Packaging and Manufacturing Technology, 1, 6, pp. 859-867, (2011)
[10] Lefevre F., Lallemand M., Coupled thermal and hydrodynamic models of flat micro heat pipes for the cooling of multiple electronic components, International Journal of Heat and Mass Transfer, 49, 7-8, pp. 1375-1383, (2006)

← 1 2 →