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Film Boiling Heat Transfer in Superfluid Helium

Research Project

Project/Area Number 02805026
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Thermal engineering
Research InstitutionKyoto University

Principal Investigator

SHIOTSU Masahiro  Kyoto University, Inst. of Atomic Energy, Assoc. Prof, 原子エネルギー研究所, 助教授 (20027139)

Co-Investigator(Kenkyū-buntansha) HATA Kouichi  Kyoto University, Inst. of Atomic Energy, Instructor, 原子エネルギー研究所, 助手 (60115912)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1991: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1990: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsSuperfiuid Helium / Film Boiling
Research Abstract

1. Film Boiling Transfer in Superfluid Helium(He II)under Sathrated Condition
Film boiling heat transfer from a horizontal Wire in super fluid helium under saturated condition was experimentally made clear for liquid temperatures ranging from 1.8 to 2.1 K. wire surface temperatures up to about 300 K and for the liquid heads above the wire ranging from 5 to 30 cm. Major conclusions are as follows :
1)Film boiling heat transfer coefficients depend strongly on liquid head but weakly depend on liquid temperature within this experimental range.
2. File Boiling Heat Transfer in He]I under Subcooled Condition
Film boiling heat transfer from a horizontal in subcooled Hell at atmospheric pressure was made clear experimentally for liquid temperatures ranging from 1.85 to 2.15 K. Conclusions are as follows :
1)Film boiling heat transfer coefficients under the subcooled conditions are higher than those for saturated conditions.
2)Under subcooled conditions at atmospheric pressure, wire temperature for quasi-steadily increasing heat input does not jump at the critical heat flux but continuously increases to film boiling. Critical heat flux of Kapitza conductance regime and minimum heat flux of file boiling are almost same and no hysteresis effect is observed.
3. Film Boiling Model
A new model for film boiling on a horizontal wire In Hell based on non-equilibrium kinetic effects at the vapoliquid interface and the HeII heat transport given expressed by the solution for Gorter-Mellink equatons was presented. It was confirmed that his model can describe our and other workers' experimental data of noiseless film boiling heat transfer coefficients on horizontal wires with the diameters ranging from 0.08 to 0.254 mm.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] M.Shiotsu: "Effect of Pressure on Film Boiling Heat Transfer from Horizontal Cylinder in Saturated Liquid Helium" Heat Transfer 1990 (Proc.of the 9th International Heat Transfer Conf.). 6. 317-322 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Shiotsu: "Film Boiling Heat Transfer from a Horizontal Wire in He II" National Heat Transfer Conf.,Sanduego,USA,Aug.1992.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] A.Sakurai: "Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizontal Wire In Saturated He II" Avances in Cryogenic Engineering. 37A. 25-35 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Shiotsu: "Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizonta Wire in Subcooled He II" Avances in Cryogenic Engineering. 37A. 37-46 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Shiotsu: "Comparison Between the Characteristics of Transient Heat Transfer Caused by Large Stepwise Heat Inputs for He I and those for He II" Proc.of the US-Japan Seminar on Basic Mechanisms of Helium Heat Transfer and Related Influence on Stability of Super-conduction Magnerts.2A-2 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Shiotsu, K. Hata, and A. Sakurai: "Effect of Pressure on Film Boiling Heat Transfer from Horizontal Cylinder in Saturated Liquid Helium" Heat Transfer 1990 (Proc. SME, of 9th International Heat 90). Transfer Conf.). 1. 157-186 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Shiotsu, K. Hata, and A. Sakurai: "Film Boiling Heat Transfer from a Horizontal Wire in He II" National Heat Transfer Conference. Sandiego, CA. USA. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] A. Sakurai, M. Shiotsu, and K. Hata: "Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizontal Wire in Saturated He II" Advances in Cryogenic Engineering,. 37A. 25-35 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Shiotsu, K. Hata, and A. Sakurai: "Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizontal Wire in Saturated He II" Advances in Cryogenic Engineering,. 37A. 37-46 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Shiotsu, K. Hata, and A. Sakurai,: "Comparison Between the Characteristics of Transient Heat Transfer Caused by Large Stepwise Heat Inputs for He I and those for He II" Proc. of the US-Japan Seminar on Basic Mechanisms of Helium Heat Transfer and Related Influence on Stability of Super Conducting Magnets,. 2A-2. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Shiotsu: "Film Boiling Heat Transfer from a Horizontal Wire in He II" National Heat Transfer Conf.,Sandiego,CA,USA,Aug.1992.

    • Related Report
      1991 Annual Research Report
  • [Publications] A.Sakurai: "Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizontal Wire in Saturated He II" Advances in Cryogenic Engineering. 37A. 25-35 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Shiotsu: "Transient Heat Transfer for Large Stepwise Heat Inputs to a Horizontal Wire in Subcooled He II" Advances in Cryogenic Engineering. 37A. 37-46 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Shiotsu: "Comparison Between the Characteristics of Transient Heat Transfer Caused by Large Stepwise Heat Inputs for He I and those for He II" Proc.of the USーJapan Seminar on Basic Mechanisms of Helium Heat Transfer and Related Influence on Stability of SuperーCOnducting Magnets. 2A2 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Shiotsu: "Effect of Pressure on Film Boiling Heat Transfer from Horizontal Cylinder in Saturated Liquid Helium" Heat transfer 1990(Proc.of the 9th International Heat Transfer Conf.).

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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