2017 Fiscal Year Annual Research Report
Effect of Micro-/Nano-patterned Wettability on the Fundamentals of Condensation Heat Transfer
| Project/Area Number |
16K18029
|
|---|
| Research Institution | Kyushu University |
|---|
Principal Investigator |
オレホン ダニエル 九州大学, カーボンニュートラル・エネルギー国際研究所, 助教 (40726246)
|
|---|
| Project Period (FY) |
2016-04-01 – 2018-03-31
|
| Keywords | Simult Dropwise Filmwise / Heat Transfer / Superhydrophobic / Surface Structure / Microstructures / Angular Deviation / Droplet-Jumping / Coating Stability |
|---|
| Outline of Annual Research Achievements |
A Simultaneous Dropwise and Filmwise Condensation behavior in a completely hydrophilic structured surface is reported for the very first time. The optimum design for maximizing the heat transfer on such a surfaces is proposed.
In addition, further basic understanding of the coalescence-induced droplet-jumping phenomenon on superhydrophobic surfaces in the presence of micro-structures is reported. Microstructures were found to induce the angular deviation from the main surface normal of the jumping-droplets, hence suppressing the jumping and the heat transfer performance.
Condensation setup comprising: optical microscopy, cooling bath, Peltier stage, steam generator, clean booth, has been acquired and used for the reported and future experimental observations.
|
