New type two phase loop applying spontaneous condensate drop movement in phase change of binary mixture

• Project/Area Number: 23656147
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Yokohama National University
• Principal Investigator: UTAKA Yoshio 横浜国立大学, 大学院・工学研究院, 教授 (50114856)
• Co-Investigator(Kenkyū-buntansha): CHIN Shigou 横浜国立大学, 大学院・工学研究院, 研究教員 (60611275)
• 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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 熱伝達 / マランゴニ凝縮 / 自発液滴移動 / 二相流体ループ / 水-エタノール / 水ーエタノール / ﾏﾗﾝｺﾞﾆ凝縮 / 水－ｴﾀﾉｰﾙ

Research Abstract

The objective of the study is to realize theheat transfer device of wickless two phase fluid loop applying the spontaneous condensate drop movement with the temperature distribution on the heat transfer surface in the vapor-liquid phase change system.
The binary mixture of water and ethanol was enclosed in the apparatus as a working fluid. The horizontal arrangement of heat transfer surface was adopted to reduce the effect of gravitational force. As a result, it was shown that the realization of wickless heat pipe was possible by applying the spontaneous condensate drop movement in the water-ethanol binary mixture system with temperature gradient of heat transfer surface.Itwas shown the enough transportation rate of heat.

Research Products

• [Presentation] Characteristics and Mechanism on Condensate Drop Movement Under Bulk Surface Temperature Gradient in Marangoni Dropwise Condensation (2012)
  • Author(s): 陳志豪、宇高義郎
  • Organizer: International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta
• [Presentation] Characteristics and Mechanism on Condensate Drop Movement Under Bulk Surface Temperature Gradient in Marangoni Dropwise Condensation (2012)
  • Author(s): 陳志豪
  • Organizer: International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
  • Place of Presentation: マルタ
• [Book] Edited by Salim N. Kazi (2012)
  • Author(s): 宇高義郎、陳志豪
  • Publisher: An overview of heat transfer phenomena Chapter 10: Condensate Drop Movement by Surface Temperature Gradient on Heat Transfer Surface in Marangoni Dropwise Condensation Heat Transfer, Edited by Salim N. Kazi, Intech
• [Book] An overview of heat transfer phenomena, Chapter 10: Condensate Drop Movement by Surface Temperature Gradient on Heat Transfer Surface in Marangoni Dropwise Condensation Heat Transfer (2012)
  • Author(s): 宇高義郎
  • Total Pages: 526
  • Publisher: Intech
• [Remarks]
  • URL: http://er-web.jmk.ynu.ac.jp/html/UTAKA_Yoshio/ja.html