Proposal of method of critical heat flux enhancement in small space boiling

• Project/Area Number: 17K06209
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Tamagawa University
• Principal Investigator: UTAKA Yoshio 玉川大学, 工学部, 教授 (50114856)
• Co-Investigator(Kenkyū-buntansha): 大久保 英敏 玉川大学, 工学部, 教授 (80152081) ; 諸隈 崇幸 横浜国立大学, 大学院工学研究院, 助教 (00756059)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 熱工学 / 沸騰伝熱 / 限界熱流束向上 / 非均一伝熱板 / 異材料配置パターン / 液体供給系 / 伝熱促進 / 沸騰熱伝達 / 限界熱流束 / 異形態相関沸騰 / 狭隘間隙 / プール沸騰 / 限界熱流束促進 / 沸騰 / 狭隘空間

Outline of Final Research Achievements

In boiling heat transfer, which shows excellent heat transfer characteristics, it is important to improve critical heat flux to meet the recent trend of increasing heat generation density. I proposed a new method of enhancing boiling heat transfer by using the internal structure of heating plate, which we call "different-mode-interacting boiling". Non-uniform temperature distribution is created on the heat transfer surface to induce interference between different boiling modes, resulting in a larger critical heat flux. The basic characteristics of different-mode-interacting boiling and the effects of the dominant parameters are elucidated, and the effectiveness of the method is demonstrated.

Academic Significance and Societal Importance of the Research Achievements

優れた熱伝達特性を示す沸騰熱伝達は，近年，パワーエレクトロニクスの冷却など，多くの工業分野に利用され，機器の発熱密度の増加に対応して，その性能向上が重要である．本研究は，従来の表面付与方式と異なる，異形態相関沸騰と呼ぶ新たな伝熱板の内部構造による伝熱の向上法を提案し，その工学技術への貢献のための検討を進めた．

Research Products

• [Int'l Joint Research] Tianjin University(中国)
• [Journal Article] Effect of material arrangement pattern on different-mode-interacting boiling in narrow gaps with two liquid supply systems (2021)
  • Author(s): T. Xie, Y. Utaka, Z. Chen, T. Hirotani, S. Mori
  • Journal Title: Applied Thermal Engineering Volume: 191 Pages: 116893-116893
  • DOI: 10.1016/j.applthermaleng.2021.116893
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effect of heating surface size on critical heat flux in different-mode-interacting boiling inside narrow gaps for water (2019)
  • Author(s): Xie, T., Utaka, Y., Chen, Z. and Mori, S.
  • Journal Title: International Journal of Heat and Mass Transfer Volume: 143 Pages: 118543-118543
  • DOI: 10.1016/j.ijheatmasstransfer.2019.118543
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Critical heat flux enhancement in narrow gaps via different-mode-interacting boiling with nonuniform thermal conductance inside heat transfer plate (2019)
  • Author(s): Utaka, Y., Xie, T, Chen, Z., Morokuma, T., Ohkubo, H.
  • Journal Title: International Journal of Heat and Mass Transfer Volume: 133 Pages: 702-711
  • DOI: 10.1016/j.ijheatmasstransfer.2018.12.123
  • Peer Reviewed / Int'l Joint Research
• [Presentation] 水のプール沸騰における異形態相関沸騰を利用する限界熱流束の向上 (2020)
  • Author(s): XIE Tianxi，陳 志豪，宇高 義郎，廣谷俊樹, 大久保英敏
  • Organizer: 第57回日本伝熱シンポジウム
• [Presentation] 狭隘空間の異形態相関沸騰における 水の限界熱流束への伝熱面寸法の影響 (2019)
  • Author(s): 謝添璽，陳志豪，宇高義郎
  • Organizer: 第56回日本伝熱シンポジウム
• [Presentation] 伝熱面温度分布付与による狭隘間隙における沸騰限界熱流束の促進 (2018)
  • Author(s): 宇高義郎、謝添璽、陳志豪、諸隈 崇幸、大久保 英敏
  • Organizer: 日本機械学会熱工学コンファレンス 2018