A study of boiling heat transfer in dielectric liquid with the electric field enhancement

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420146
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Yamagata University
• Principal Investigator: Ichiro Kano 山形大学, 理工学研究科, 准教授 (10282245)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 熱交換器 / 沸騰熱伝達 / 伝熱促進 / 限界熱流束 / 静電圧力 / 微細構造化

Outline of Final Research Achievements

This study describes the results of dielectric liquid pool boiling experiments on a polished copper wall with the application of an electric field. Then, micro-structured surfaces were used as the boiling surface. Finally, the combination of the application of electric filed and the micro-structured surface was tested. In addition, the effect of the electric filed and the micro-structured surface on critical heat flux (CHF) were analytically investigated. The maximum CHF with the application of electric field was 4 times greater than that for the pool boiling. The CHF were increased by the micro-structured surface, and showed maximally 40 % higher than the CHF for the polished surface. The combined effects of the electric filed and the micro-structured surface increased the CHF significantly, which was 4.5 times greater than that for the pool boiling. The combined effect on CHF was sufficiently detected by the analysis results.

Free Research Field

工学