Micro-column enhanced boiling structure and its ramification

来源期刊：中南大学学报(英文版)2008年第z2期

论文作者：汤勇 陆龙生 袁冬 苏达士

文章页码：222 - 227

Key words：enhanced boiling； micro-column structure； enhanced heat transfer

Abstract: Enhanced boiling experiments of two different enhanced structures were carried out in a thermosyphon loop evaporator chamber. One was micro-columns array structure (MCAS), which was fabricated on copper plate surface with interaction high speed wire electrode discharge machining (HS-WEDM). The other was the ramification of MCAS, named micro-column-array and sintered-copper compound structure (MSCS), which was fabricated with sintered method on micro-column array structure. Considering the wall superheat and critical heat flux (CHF), comparisons were made between them. The results show that both MCAS and MSCS can enhance the boiling heat transfer. It is also found that the enhanced boiling heat transfer ability of MSCS is changed obviously while the porosity of the sintered copper layer is changed.