Volume 35 Issue 12
Dec.  2009
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Bai Lizhan, Lin Guiping. Analysis of heat transfer and flow characteristics of composite wicks of loop heat pipes[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(12): 1446-1450. (in Chinese)
Citation: Bai Lizhan, Lin Guiping. Analysis of heat transfer and flow characteristics of composite wicks of loop heat pipes[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(12): 1446-1450. (in Chinese)

Analysis of heat transfer and flow characteristics of composite wicks of loop heat pipes

  • Received Date: 24 Nov 2008
  • Publish Date: 31 Dec 2009
  • Loop heat pipe is one of the most advanced thermal control devices in the spacecraft thermal control system, whereas high quality wicks are the key components for its efficient and reliable operation. To improve the overall performance of the wicks, composite wicks are the developing trend. The mathematical model of the two-layer composite wicks applied in loop heat pipes with a cylindrical evaporator was established, and its heat transfer and flow characteristics especially the effect of the applied heat loads and ratio of the inner and outer layer wick thickness were analyzed. Meanwhile, the performance of the composite wick was compared with that of the single structure wick. The modeling results show that the composite wick can acquire not only high capillary forces and evaporation efficiency, but also low flow resistance and radial conductance, and its overall performance is far better than that of single structure wick. When the size of the composite wick is fixed, as the ratio of the inner and outer layer wick thickness increases, its radial conductance and flow resistance decrease, which contributes to the efficient operation of loop heat pipes.

     

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  • [1] Ku J.Operating characteristics of loop heat pipes .SAE Paper,1999-01-2007,1999 [2] Maydanik Y F.Loop heat pipes[J].Applied Thermal Engineering,2005,25(5/6):635-657 [3] Phillips A L,Wert K L.Loop heat pipe anti icing system development program summary .SAE Paper,2000-01-2493,2000 [4] Pastukhov V G,Maydanik Y F,Vershinin C V,et al.Miniature loop heat pipes for electronics cooling[J].Applied Thermal Engineering,2003,23(9):1125-1135 [5] Zhang H X,Lin G P,Ding T,et al.Investigation on start-up behaviors of a loop heat pipe[J].Journal of Thermophysics and Heat Transfer,2005,19(4):509-517 [6] 李强,周海迎,宣益民.复合结构毛细蒸发器传热特性研究[J].工程热物理学报,2008,29(1):148-150 Li Qiang,Zhou Haiying,Xuan Yimin.Investigation on heat transfer characteristics of composite capillary evaporator[J].Journal of Engineering Thermophysics,2008,29(1):148-150 (in Chinese) [7] Bonnefoy M,Ochterbeck J M,Drolen B L,et al.Effective thermal conductivity of saturated sintered nickel loop heat pipe wicks .AIAA-2004-2571,2004 [8] Parker M L.Modeling of loop heat pipe with applications to spacecraft thermal control .Pennsylvania:Faculty of Mechanical Engineering and Applied Mechanics,University of Pennsylvania ,2000 [9] 李亭寒,华诚生.热管设计与应用[M].北京:化学工业出版社,1987:70-72 Li Tinghan,Hua Chengsheng.Heat pipe design and application[M].Beijing:Chemical Industry Press,1987:70-72 (in Chinese)
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