MWCNT纳米结构表面对过冷流动沸腾的影响  

Effect of MWCNT nanostructured surface on subcooled flow boiling

作　　者：崔文彬[1] 韩云曌 崔新贵 魏美容[1] 马鸿斌[2] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026 [2]密苏里大学航空与机械工程学院,密苏里哥伦比亚65203

出　　处：《大连海事大学学报》2016年第3期89-94,共6页Journal of Dalian Maritime University

基　　金：国家自然科学基金资助项目(51376027);辽宁省教育厅一般项目(L2014195);中央高校基本科研项目(3132015033);大连海事大学创业创新项目(288)

摘　　要：为研究多壁碳纳米管(Multi-walled Carbon Nanotube,MWCNT)纳米结构表面对流动沸腾的影响,使用化学气体沉积方法在硅表面制备多壁碳纳米管纳米结构表面,并应用于过冷流动沸腾实验中,实验过程中采用不同的流体温度和流体速度.结果表明,对比硅表面,MWCNT表面能够有效地提高流动沸腾传热效果,热流密度最高提高165%;在流速为118~227 kg/m^2·s情况下,MWCNT纳米结构表面的作用效果在流速较高、加热面温度较高的情况下较为明显.MWCNT（ Multi-walled Carbon Nanotube） nanostructured surface was fabricated by CVD（ Chemical Vapor Deposition） method on the silicon surface and utilized in flow boiling experiment to reveal its effect on subcooled flow boiling. The experiment was conducted with fluid of different temperatures and different velocities. Results show that as comparing with bare silicon surface at the same condition,MWCNT surface can enhance the subcooled flow boiling effectively with the heat flux increasing by up to 165%. Consequently,the enhancement is more obvious with higher velocities and higher surface temperature at the velocity between 118 kg/m^2·s and227 kg/m^2·s.

关 键 词：过冷流动沸腾 MWCNT纳米结构表面 加热面温度 

分 类 号：TB611[一般工业技术—制冷工程]