Fundamental transition boiling heat transfer during spray cooling

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420165
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Saga University
• Principal Investigator: Mitsutake Yuichi 佐賀大学, 海洋エネルギー研究センター, 教授 (20253586)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 遷移沸騰 / 高温面上のぬれ / 非定常熱伝導 / 液滴

Outline of Final Research Achievements

Rewetting on a hot surface is an essential phenomenon governing inception of rapid cooling during transient cooling with boiling heat transfer.
This study was conducted to elucidate rewetting phenomena during spray quenching. An experimental apparatus to evaluate fundamental transition boiling phenomena simulated with boiling of single or multiple sessile droplets on a hot nickel surface. High speed video imaging technology and fast response surface temperature measurement techniques were applied. As a governing parameter of the wetting phenomena, vapor generation time delay after sudden contact of liquid and solid surface was characterized.

Free Research Field

熱工学