• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Rapid Cooling Method Using Wetting Improvement by Plasma Irradiation

Research Project

Project/Area Number 14350109
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

TAKATA Yasuyuki  Kyushu University, Faculty of Engineering, Professor, 大学院・工学研究院, 教授 (70171444)

Co-Investigator(Kenkyū-buntansha) KUBOTA Hiromi  Kyushu University, Faculty of Engineering, Research Associate, 大学院・工学研究院, 助手 (10117103)
NAKATA Naoki  JFE Steel Corp., Steel Research Laboratory, Senior Researcher Staff manager, スチール研究所, 主任研究員
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2004: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2003: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2002: ¥9,900,000 (Direct Cost: ¥9,900,000)
KeywordsPlasma irradiation / Superhydrophilicity / Phase change / Boiling / Evaporation / Contact angle / 沸騰・蒸発 / 拡張濡れ / 超撥水
Research Abstract

The purpose of this research project is to develop an enhanced cooling method making use of plasma irradiation which enhances surface wattability of various solid surfaces.
Three metals, aluminum, copper and stainless steel were selected as the test materials. First, the following were investigated experimentally to understand the fundamental characteristics and relationship between plasma irradiation and surface wettablity ;
(1)change in contact angle with irradiation time of plasma.
(2)Recovery process of surfaces from hydrophilic state to hydrophobic state, namely, relationship between contact angle and elapsed time after termination of irradiation.
As a result, it was turned out that aluminum was the best among three metals. The contact angle of aluminum decreased to nearly zero, while the terminal contact angles of copper and stainless steel during irradiation were nearly 10 degree. In case of aluminum, special treatment has also been done on its surface to have a fractal surface structure. This surface initially had a superhydrophilic nature, but it gradually changed and finally became super-water-repellent.
In order to know the cooling ability, experiments of water drop evaporation using above surfaces have conducted and the following results were obtained ;
(1)When the surface temperature was 50 degree C, evaporation time of water drop depended on contact angle. By the decrease in contact angle, evaporation time was drastically decreased and the evaporation was enhanced by the improvement of surface wettablity.
(2)The wetting limit temperature increased with the decrease in contact angle. In case of aluminum and copper, the wetting limit temperature increased by 45K by the plasma irradiation.
It was found that the wetting improvement by plasma irradiation was one of the promising methods of rapid cooling technique.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (23 results)

All 2005 2004 2003 2002 Other

All Journal Article (11 results) Publications (12 results)

  • [Journal Article] Effect of surface wettability on boiling and evaporation2005

    • Author(s)
      Y.Takata, S.Hidaka, J.M.Cao, T.Nakamura, H.Yamamoto, M.Masuda, T.Ito
    • Journal Title

      Energy, The International Journal 30-2

      Pages: 209-220

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Effect of surface wettability on boiling and evaporation2005

    • Author(s)
      Y.Takata, S.Hidaka, J.M.Cao, T.Nakamura, H.Yamamoto, M.Masuda, T.Ito
    • Journal Title

      Energy, The International Journal Vol.30, Issue 2

      Pages: 209-220

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Evaporation of Water Drop on a Plasma-irradiated Hydrophilic Surface2004

    • Author(s)
      Y.Takata, S.Hidaka, A.Yamashita, H.Yamamoto
    • Journal Title

      International Journal of Heat and Fluid Flow 25-2

      Pages: 320-328

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Evaporation of Water Drop on a Plasma-irradiated Hydrophilic Surface2004

    • Author(s)
      Y.Takata, S.Hidaka, A.Yamashita, H.Yamamoto
    • Journal Title

      International Journal of Heat and Fluid Flow Vol.25, No.2

      Pages: 320-328

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Boiling Feature on Super-water-repellent Surface2004

    • Author(s)
      Y.Takata, S.Hidaka, T.Uraguchi
    • Journal Title

      proceedings of the 2nd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics-HEFAT2003- (CD-ROM)

    • NAID

      110002525404

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Photo-induced Hydrophilicity and Its Applications to Phase Change Phenomena2003

    • Author(s)
      Y.Takata
    • Journal Title

      Thermal Science & Engineering Vol.10, No.2

      Pages: 31-38

    • NAID

      10010165812

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Pool Boiling on a Superhydrophilic Surface2003

    • Author(s)
      Y.Takata, S.Hidaka, M.Masuda, T.Ito
    • Journal Title

      International Journal of Energy Research 6Vol.27,Issue

      Pages: 111-119

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Pool Boiling on a Superhydrophilic Surface2003

    • Author(s)
      Y.Takata, S.Hidaka, M.Masuda, T.Ito
    • Journal Title

      International Journal of Energy Research Vol.27, Issue 2

      Pages: 111-119

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Control of Surface Wettability by Plasma Irradiation2002

    • Author(s)
      Y.Takata
    • Journal Title

      Proceedings of the Fourth Pacific Rim Thermal Science and Energy Engineering Workshop (PaRTSEE-4)

      Pages: 113-116

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Evaporation of Water Drop on Photo-Induced Hydrophilic Surface2002

    • Author(s)
      Y.Takata, S.Hidaka, H.Yamamoto, M.Masuda, T.Ito
    • Journal Title

      Proceedings of the 12th International Heat Transfer Conference Vol.3

      Pages: 413-418

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Photo-induced Hydrophilicity and Its Applications to Phase Change Phenomena2002

    • Author(s)
      Y.Takata
    • Journal Title

      Thermal Science & Engineering Vol.10, No.6

      Pages: 31-38

    • NAID

      10010165812

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] 日高澄具, 高田保之, 山本弘志, 山下秋満, 伊藤猛宏: "プラズマ照射した金属表面の濡れ性変化と液滴蒸発"日本機械学会論文集(B編). 69-678. 437-444 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Takata, S.Hidaka, A.Yamashita, H.Yamamoto: "Evaporation of Water Drop on a Plasma-irradiated Hydrophilic Surface"Proceedings of the 5th International Boiling Heat Transfer Conference. (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Takata, S.Hidaka, A.Yamashita, H.Yamamoto: "Plasma-irradiated Hydrophilic Surfaces and its Applications to Phase Change Heat Transfer"Proceedings of the 2nd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics-HEFAT2003-. (CD-ROM). TY1 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 高田保之: "超親水性による伝熱促進"会報光触媒. No.11. 56-63 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Takata, S.Hidaka, M.Masuda, T.Watanabe: "Superhydrophilic Heat Transfer Surface Coated with Titania by RF-Magnetron Sputtering"Proceedings of the 8th UK National Heat Transfer Conference, Oxford. (CD-ROM). (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Takata, S.Hidaka, A.Yamashita, H.Yamamoto: "Improvement of Surface Wettability by Plasma Irradiation"Proceedings of the Fourth International Conference on Compact Heat Exchangers and Enhancement Technology for the Process Industries. 305-309 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 高田保之, 日高澄具, 山本弘志, 中村匡亨, 増田正孝, 伊藤猛宏: "液滴の蒸発に関する接触角の効果(光励起超親水化現象を用いた接触角の制御)"日本機械学会論文集(B編). 68-671. 1911-1918 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Takata: "Control of Surface Wettability by Plasma Irradiation"Proceedings of the Fourth Pacific Thermal Science and Energy Engineering Workshop(PaRTSEE-4). 113-116 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Takata, H.Kubota, T.Ito: "Boiling Heat Transfer to Subcooled Nitrogen from Thin Wire in Narrow Space"Proceedings of 2002 ASME International Mechanical Engineering Congress and Exposition, New Orleans, LA. (CD-ROM). IMECE2002-34064 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Takata: "Photo-induced Hydrophilicity and Its Applications to Phase Change Phenomena"Thermal Science & Engineering. Vol.10,No.6. 31-38 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 高田保之: "光触媒の超親水性と相変化伝熱への応用"混相流. 16-3. 15-18 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Takata, S.Hidaka, M.Masuda, T.Ito: "Pool Boiling on a Superhydrophilic Surface"International Journal of Energy Research. Vol.27,Issue2. 111-119 (2003)

    • Related Report
      2002 Annual Research Report

URL: 

Published: 2002-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi