高校化学工程学报2017，Vol.31Issue(4)：984-990,7.DOI:10.3969/j.issn.1003-9015.2017.04.032
润湿性对微纳复合结构表面池沸腾换热的影响
Effects of Wettability on Pool Boiling Heat Transfer of Micro/Nano-Composite Surface
摘要
Abstract
In order to investigate the effects of wettability of Micro/nano-composite structures (MNCS) on pool boiling heat transfer, superhydrophilic (SHP) and superhydrophobic (SHB) MNCS with contact angles of 6.5° and 148.6° respectively were prepared by electro-brush plating and surface modification. Comparative experiments were conducted to investigate pool boiling heat transfer. The results show that the maximum heat transfer coefficient (HTC) of SHP-MNCS and SHB-MNCS are 3 and 1.5 times higher than that of bare copper surface, respectively. When heat flux is smaller than 580 kW·m-2, SHB-MNCS has the largest HTC. HTC of SHP-MNCS is superior to that of SHB-MNCS when heat flux surpasses 580 kW·m-2. SHP-MNCS has the maximum critical heat flux (CHF), which is 110% and 60% higher than that of bare copper surface and SHB-MNCS, respectively. MNCS can dramatically increase bubble nucleation density, and the capillary liquid suction ability of SHP-MNCS is better than that of the SHP-MNCS, which is the main factor for CHF enhancement.关键词
沸腾换热/润湿性/微纳复合结构/电刷镀/临界热流密度Key words
boiling heat transfer/wettability/micro/nano composite structures/electro-brush plating/critical heat flux分类
能源科技引用本文复制引用
柴永志,张伟,赵亚东,李亚..润湿性对微纳复合结构表面池沸腾换热的影响[J].高校化学工程学报,2017,31(4):984-990,7.基金项目
国家自然科学基金(51476057) （51476057）
中央高校基本科研业务费专项资金(2015MS47). （2015MS47）
