能源工程2025，Vol.45Issue(2)：52-60,9.DOI:10.16189/j.nygc.2025.02.008
电化学方法制备多孔微纳结构表面的池沸腾传热性能研究
Boiling heat transfer enhancement on microporous surfaces fabricated by coupled electrodeposition and etching technique
摘要
Abstract
Electrochemical deposition has been an important method for surface modification in the field of pool boiling heat transfer enhancement for a long time.However,on smooth surfaces,continuous deposition and growth of dendritic structures also lead to the formation of unnecessary accumulation layers at the base,thereby increasing the thermal resistance of the bottom layer,which is detrimental to the improvement of surface boiling heat transfer coefficient(HTC).By combining electrochemical corrosion and electrochemical deposition process,a"subtractively+additively"(sub-add)surface was prepared to investigate the differences in surface morphology and boiling heat transfer performance compared with surfaces deposited by direct deposition on bare surface.SEM images indicated that compared to surfaces directly deposited on untreated copper plates,the"sub-add"surface had longer dendritic,deeper pore structures,and fewer bottom layer accumulations,resulting in a larger overall surface roughness.Steady-state pool boiling experiments showed that the CHF value on the surface directly electro-deposited on untreated copper plates is increased by 141%compared to untreated copper surface.In contrast,the CHF value on the"sub-add"surface was increased by 193%compared to untreated copper plates,and its overall boiling curve was shifted to the left compared to the directly deposited surface.Observations of bubble behavior during boiling and surface spreading rate test results indicated that the"sub-add"surface had stronger liquid rewetting ability,promoting a more effective detachment process for bubbles.关键词
池沸腾传热/电化学表面改性/临界热流密度/汽泡动态特性Key words
pool boiling heat transfer enhancement/electrochemical deposition/critical heat flux/bubble dynamics分类
土木建筑引用本文复制引用
陈禹铭,范利武..电化学方法制备多孔微纳结构表面的池沸腾传热性能研究[J].能源工程,2025,45(2):52-60,9.基金项目
浙江省自然科学基金重点项目(LZ22E060004) （LZ22E060004）
