Enhancement of Boiling Heat Transfer by Self-Assembled Monolayers

• Project/Area Number: 20760139
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Thermal engineering
• Research Institution: University of Hyogo
• Principal Investigator: KAWANAMI Osamu University of Hyogo, 大学院・工学研究科, 助教 (20382260)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 沸騰伝熱促進 / 濡れ性制御 / 自己組織化 / 酸化チタンナノチューブ / 沸騰・二相流 / ナノ材料 / 伝熱促進

Research Abstract

To Enhance boiling heat transfer, control of heating surface wettability is important because it affected bubble generation and detachment from the heating surface. In this study, the wettability of the surface from super-hydrophilic to hydrophobic can control by coating the TiO2 nanotube (TNTs) with self-assembled monolayers (SAMs) film without UV irradiation. Critical heat flux and heat transfer coefficient of pool boiling employed the surface with TNTs-SAMs film were 1.4 times and 1.5 times larger than those of normal copper surface.

Research Products

• [Journal Article] 活性酸素を発生しない酸化チタンの開発と特性 (2008)
  • Author(s): 加藤太一郎, 河南治
  • Journal Title: FRAGRANCE JOURNAL 36 Pages: 42-48
• [Journal Article] 紫外線吸収能力に特化した酸化チタンナノチューブの調製 (2008)
  • Author(s): 加藤太一郎, 河南治
  • Journal Title: 月刊機能材料 Pages: 48-58
• [Journal Article] 紫外線吸収能力に特化した酸化チタンナノチューブの調製 (2008)
  • Author(s): 加藤太一郎, 河南治
  • Journal Title: 月刊機能材料 10月号 Pages: 48-58
• [Presentation] 自己組織化による伝熱面の濡れ性制御-沸騰伝熱促進に向けて- (2009)
  • Author(s): 浜辺雄太
  • Organizer: 日本マイクログラビティ応用学会第24回学術講演会
  • Place of Presentation: 沖縄産業支援センター(那覇市)
  • Year and Date: 2009-10-19
• [Presentation] 自己組織化膜による伝熱面の濡れ性制御-沸騰伝熱促進に向けて- (2009)
  • Author(s): 浜辺雄太, 河南治, 本田逸郎, 川島陽介
  • Organizer: 日本マイクログラビティ応用学会第24回学術講演会
• [Presentation] 表面改質二酸化チタンナノチューブの生成と新機能性材料としての応用 (2008)
  • Author(s): 浜辺雄太, 河南治, 加藤太一郎
  • Organizer: 化学工学会姫路大会2008講演要旨集
  • Place of Presentation: 姫路
• [Presentation] Enhancement of Critical Heat Flux on Pool Boiling by TiO2 Nanotubes Coated Super-hydrophilic Surface. (2008)
  • Author(s): O. Kawanami, K. Nishimura, S-C. Huang, I. Honda, Y. Kawashima
  • Organizer: Proc. The Int. Topical Team Workshop on Two-phase Systems for Ground and Space Applications
  • Place of Presentation: in Brussels, Belgium, Best Poster Awards
• [Presentation] Enhancement of Critical Heat Flux on Pool Boiling by TiO_2 Nanotubes Coated Super-hydrophilic Surface (2008)
  • Author(s): Osamu Kawanami, Kentaro Nishimura, Shih-Che Huang, Itsuro Honda and Yousuke Kawashima
  • Organizer: Third International Topical Team Workshop on TWO-PHASE SYSTEMS FOR GROUND AND SPACE APPLICATIONS
  • Place of Presentation: Brussels, Belgium
• [Remarks] 上記の学会発表(Third International Topical Team Workshop on TWO-PHASE SYSTEMS FOR GROUND AND SPACE APPLICATIONS)において、Best Poster Awardsを受賞。