文档介绍：铜纳米线阵列表面池沸腾换热实验研究
史波1,陈凯2,王义彪1
1
2
南京航空航天大学能源与动力学院,南京,210016
南京理工大学能源与动力工程学院,南京,210094
摘要:采用直流电化学沉积法在光滑铜表面制备五种不同高度(3µm、5µm、10µm、
20µm和30µm)的铜纳米线阵列并对其表面在饱和去离子水中的池沸腾换热效果进行了实验研
究。结果表明,在沸腾表面集成铜纳米线阵列不但能够有效增强沸腾换热系数,并且临界热流
密度也有一定量的提高。研究同时发现,在一定范围内,沸腾换热的强化效果随表面纳米线阵
列高度的增加而增强,其原因主要是由于表面润湿性的变化和汽化核心点(缺陷)数量的增
加。
关键词:工程热物理;强化换热;纳米线阵列;池沸腾
中图分类号: TK121
Pool Boiling Heat Transfer Investigation on
Surface with Copper Nanowire Arrays
SHI Bo1, CHEN Kai2,WANG Yi-Biao1
1
School of Energy and Power, Nanjing University of Aeronautics and Astronautics, Nanjing
210016
2
School of Energy and Power Engineering, Nanjing University of Science and Technology,
Nanjing 210094
Abstract: Five copper nanowire arrays with different lengths(3µm、5µm、10µm、20µm
and 30µm) were fabricated by electroplating on smooth copper plates. Their pool boiling
heat transfer performance in saturated deionized water was studied experimentally. It is
observed that the integration of copper nanowire arrays on boiling surface can effectively
enhance the boiling heat transfer coefficient as well as the critical heat flux. It is also found
that as the length of nanowires increase, more enhancements can be achieved. This augment
is due to the increase of the wettability and the number of nucleation sites (defects).
Key words: Engineering Thermophysics; Heat Transfer Enhancement; Nanowire Array;
Pool Boiling