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首页> 外文期刊>Journal of Heat Transfer >Effects of Superhydrophobic and Superhydrophilic Surfaces on Heat Transfer and Oscillating Motion of an Oscillating Heat Pipe
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Effects of Superhydrophobic and Superhydrophilic Surfaces on Heat Transfer and Oscillating Motion of an Oscillating Heat Pipe

机译：超疏水和超亲水表面对振荡热管传热和振荡运动的影响

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摘要

The effects of superhydrophobic surface and superhydrophobic and superhydrophilic hybrid surface on the fluid flow and heat transfer of oscillating heat pipes (OHPs) were investigated in the paper. The inner surfaces of the OHPs were hydrophilic surface (copper), hybrid surface (superhydrophilic evaporation and superhydrophobic condensation section), and uniform superhydrophobic surface, respectively. De-ionized water was used as the working fluid. Experimental results showed that superhydrophobic surface influenced the slug motion and thermal performance of OHPs. Visualization results showed that the liquid-vapor interface was concave in the OHP with copper surface. A thin liquid film existed between the vapor plug and the wall of the OHP. On the contrary, the liquid-vapor interface took a convex profile in the OHP with superhydrophobic surface and the liquid-vapor interface contact line length in the hybrid surface OHP was longer than that in the uniform superhydrophobic surface OHP. The liquid slug movements became stronger in the hybrid surface OHPs as opposed to the copper OHP, while the global heat transfer performance of the hybrid surface OHPs increased by 5-20%. Comparing with the copper OHPs, the maximum amplitude and velocity of the liquid slug movements in the hybrid surface OHPs increased by 0-127% and 0-185%, respectively. However, the maximum amplitude and velocity of the liquid slug movements in the uniform superhydrophobic OHPs was reduced by 0-100% and 0-100%, respectively. The partial dryout phenomenon took place in OHPs with uniform superhydrophobic surface. The liquid slug movements became weaker and the thermal resistance was increased by 10-35% in the superhydrophobic surface OHPs.
机译：研究了超疏水表面以及超疏水和超亲水混合表面对振荡热管（OHPs）的流体流动和传热的影响。 OHP的内表面分别为亲水性表面（铜），杂化表面（超亲水性蒸发和超疏水性冷凝段）和均匀的超疏水性表面。去离子水用作工作流体。实验结果表明，超疏水表面影响OHP的团状运动和热性能。可视化结果表明，在具有铜表面的OHP中，液-气界面呈凹形。蒸气塞和OHP壁之间存在薄液膜。相反，在具有超疏水表面的OHP中，液-气界面呈凸形，并且在杂化表面OHP中的液-气界面接触线长度比在均匀的超疏水表面中的更长。与铜OHP相比，杂化表面OHP中的液团运动变得更强，而杂化表面OHP的整体传热性能提高了5-20％。与铜OHP相比，混合表面OHP中液体团块运动的最大幅度和速度分别增加了0-127％和0-185％。但是，均匀超疏水OHP中液体团块运动的最大幅度和速度分别降低了0-100％和0-100％。在具有均匀超疏水表面的OHP中会发生部分变干现象。在超疏水表面OHP中，液团运动变弱并且热阻增加了10-35％。

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  • 来源
    《Journal of Heat Transfer》 |2014年第8期|082001.1-082001.13|共13页
  • 作者

    Tingting Hao; Xuehu Ma; Zhong Lan; Nan Li; Yuzhe Zhao;

  • 作者单位

    Institute of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China;

    Institute of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China;

    Institute of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China;

    Institute of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China;

    Institute of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    OHP; superhydrophobic surface; superhydrophilic surface; liquid-vapor interface; oscillating motion; heat transfer;

    机译：OHP;超疏水表面超亲水表面气液界面振荡运动传播热量;

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