化工学报2019，Vol.70Issue(4)：1318-1326,9.DOI:10.11949/j.issn.0438⁃1157.20181298
单晶硅表面池沸腾可视化测量及数据分析
Visual measurement and data analysis of pool boiling on silicon surfaces
摘要
Abstract
The high-speed video and high-speed infrared were used to visual measure the boiling phenomenon on four kinds of monocrystalline silicon surfaces including smooth, cavity, pitch and groove-pitch surfaces. The dynamic evolution process and the local temperature evolution law reveal the boiling enhancement mechanism based on the dynamic process. For the smooth silicon surface, the superheat is 6℃when the boiling starts under low heat transfer, and this superheat is around 3－4℃ for the three micro-structured surfaces. In addition, compared with the smooth surface, the CHF for cavity, groove-pitch and pitch surfaces are increased by 109%, 129% and 140%, respectively. According to the dynamic evolution of bubble, cavities provide the nucleation sites, decrease the nucleation barrier energy and shrink the energy accumulation stage. Pitches significant increase nucleation sites, decrease departure diameter and departure time of bubbles, which uniform the boiling surface temperature.关键词
微结构/池沸腾/气泡动力学/局部温度/高速红外Key words
micro-structure/pool boiling/bubble dynamics/local temperature/high-speed infrared分类
能源科技引用本文复制引用
陈宏霞,孙源,宫逸飞,黄林滨..单晶硅表面池沸腾可视化测量及数据分析[J].化工学报,2019,70(4):1318-1326,9.基金项目
国家自然科学基金项目(51408415) （51408415）
天津市自然科学基金项目(17JCYBJC17400) （17JCYBJC17400）
