Stability of Vapor Film under High Subcooled Condition

• Project/Area Number: 23656152
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Kyushu University
• Principal Investigator: TAKATA Yasuyuki 九州大学, 大学院・工学研究院, 教授 (70171444)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 伝熱機器 / 沸騰 / 超撥水 / 接触角 / 沸騰伝熱 / 気泡 / 蒸気膜 / 撥水 / サブクール度 / 溶存空気 / 熱伝達

Research Abstract

In order to disclose the characteristics of vapor film that can exist under high subcooled condition, experiments of pool boiling have been performed using superhydrophobic and PTFE spotted coatings. The results show that the surfaces with PTFE circle dots have higher heat transfer performance in nucleate boiling region and the boiling starts in lower surface superheating. It was also found that by the effect of dissolved periodic gas bubble generation can occur below boiling point.

Research Products

• [Journal Article] High speed camera investigation of the impingement of single water droplets on oxidized high temperature surfaces (2013)
  • Author(s): E.-S. R. Negeed, S. Hidaka, M. Kohno, Y. Takata
  • Journal Title: International Journal of Thermal Sciences Volume: Vol.63 Pages: 1-14
• [Journal Article] The effect of nanocarbon materials on surface wettability (2012)
  • Author(s): Takashi Nishiyama, Takanori Nakayama, Koji Takahashi, Yasuyuki Takata
  • Journal Title: Proceedings of the 3rd International Forum on Heat Transfer, IFHT2012-173, Nagasaki
• [Journal Article] Heat Transfer of SmallDroplet Impinging onto a Hot Surface (Effectsof Droplet Diameter,Impinging Velocity,Surface Roughness) (2012)
  • Author(s): Fukatani,Y., Fukuda, S., Hidaka, S., Kohno,M. and Takata,Y.
  • Journal Title: Proceedings of the ECI-8thInternational Conference on Boiling and Condensation, Lausanne Pages: 1521-1521
• [Journal Article] Subcooled Boiling from a Surface with SpottedPatterns of Hydrophilic and HydrophobicCoatings (2012)
  • Author(s): T ashiro, M., Suroto, B.J., Kakitani, T.,Hidaka, S., Kohno, M. and Takata,Y.
  • Journal Title: Proceedings of the ECI-8th International Conference on Boiling and Condensation Pages: 1520-1520
• [Journal Article] Effect of Surface Wettability on Pool Boiling -Enhancement by Hydrophobic Coating- (2012)
  • Author(s): Yasuyuki Takata, Sumitomo Hidaka, Masamichi Kohno
  • Journal Title: International Journal of Air-Conditioning and Refrigeration Volume: 20(1)1150003
• [Journal Article] The effect of nanocarbon materials on surface wettability (2012)
  • Author(s): Takashi Nishiyama, Takanori Nakayama, Koji Takahashi, Yasuyuki Takata
  • Journal Title: Proceedings of the 3rd International Forum on Heat Transfer Volume: - Pages: 173-173
  • Peer Reviewed
• [Journal Article] Heat Transfer of Small Droplet Impinging onto a Hot Surface (Effects of Droplet Diameter,Impinging Velocity, Surface Roughness) (2012)
  • Author(s): Fukatani,Y., Fukuda, S., Hidaka, S., Kohno, M. and Takata,Y.
  • Journal Title: Proceedings of the ECI-8th International Conference on Boiling and Condensation Volume: - Pages: 1521-1521
  • Peer Reviewed
• [Journal Article] Subcooled Boiling from a Surface with Spotted Patterns of Hydrophilic and Hydrophobic Coatings (2012)
  • Author(s): Tashiro, M., Suroto, B.J., Kakitani, T., Hidaka, S., Kohno, M. and Takata,Y.
  • Journal Title: Proceedings of the ECI-8th International Conference on Boiling and Condensation Volume: - Pages: 1520-1520
  • Peer Reviewed
• [Journal Article] Effect of Surface Wettability on Pool Boiling-Enhancement by Hydrophobic Coating- (2012)
  • Author(s): Y.Takata, 他
  • Journal Title: International Journal of Air-Conditioning and Refrigeration Volume: 20 Issue: 01 Pages: 1150003-1150003
  • DOI: 10.1142/s2010132511500039
  • Peer Reviewed
• [Journal Article] Effect of Surface Conditions on Boiling and Evaporation (2011)
  • Author(s): Y. Takata, S. Hidaka, K. Tagashira, S. Fukuda, B. J. Suroto, M. Kohno
  • Journal Title: Effect of Surface Conditions on Boiling and Evaporation, Proceedings of International Conference on Air-Conditioning & Refrigeration 2011, ICACR2011-KN-3 Pages: 6-8
• [Presentation] 親水・撥水複合伝熱面における沸騰伝熱-PTFE 斑点サイズ及びサブクールの影響- (2012)
  • Author(s): 平林佐那,田代雅浩,B.J. Suroto,日高澄具,河野正道,高田保之
  • Organizer: 熱工学コンファレンス2012
• [Presentation] Enhancement of Heat Transfer in Pool Boiling by Using a Patterned Hydrophobic Coating on Polished Copper Surface (2012)
  • Author(s): Bambang Joko Suroto, Masahiro Tashiro, Tsugutaka Kakitani, Sumitomo Hidaka, Masamichi Kohno, Yasuyuki Takata
  • Organizer: 8th KSME-JSME Thermal and Fluids Engineering Conference
  • Place of Presentation: Incheon, Korea
• [Presentation] 斑点状に撥水コーティングを施した伝熱面からのサブクール沸騰 (2011)
  • Author(s): 田代雅浩,B.J. Suroto,柿谷継孝,日高澄具,河野正道,高田保之
  • Organizer: 熱工学コンファレンス 2011
• [Presentation] Effect of Surface Conditions on Boiling and Evaporation, (2011)
  • Author(s): Y. Takata, S. Hidaka, K. Tagashira, S. Fukuda, B. J. Suroto, M. Kohno
  • Organizer: International Conference on Air-Conditioning & Refrigeration 2011(招待講演)
  • Place of Presentation: Yongpyong, Korea
• [Presentation] 親水・撥水複合伝熱面におけるサブクール沸騰
  • Author(s): 熱工学コンファレンス 2011
  • Organizer: 第49回日本伝熱シンポジウム