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Heat Transport Characteristics and its Mechanism of Heat Transport Device Using Parallel Tubes

Research Project

Project/Area Number 18360099
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

MOCHIZUKI Sadanari  Tokyo University of Agriculture and Technology, Institute of Symbiotic Science and Technology, professor (10013715)

Co-Investigator(Kenkyū-buntansha) MURATA Akira  National University Corporation Tokyo University of Agriculture and Technology, Institute of Symbiotic Science and Technology, professor (60239522)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥14,040,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥840,000)
Fiscal Year 2007: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2006: ¥10,400,000 (Direct Cost: ¥10,400,000)
KeywordsHeat transfer / Boiling / Heat transfer enhancement / Phase change / Heat pipe / Flow visualization / Multiphase flow
Research Abstract

The increasing power consumption of the CPUs has made the thermal management one of the critical factors in their design. The present investigators proposed a new type of heat transport device, called parallel tube heat transport device (PTH) consisting of multiple capillary tubes and headers on both ends. PTH has a heat transport potential higher than any other heat transport devices previously proposed. The objective of this study is to examine the fundamental heat transport characteristics of PTH and to clarify its heat transport mechanism.
In the heat transport experiments, two types of test sections were used. First test section had six copper tubes. The working fluid was R-134a, and the tube inner diameter and tube length were 2mm and 100mm, respectively. In this case, the heat was supplied by circulating the hot water around an evaporator. Second test section had two (inner diameter of 6.5mm and 3.5mm) or six (inner diameter of 2.8mm) copper tubes and used water as a working flui … More d. In this second case, the electric heater was used to heat the evaporator, and the effects of inclination angle, heating rate, and tube length were examined.
In the flow visualization experiments, in order for the test section to be endurable against the high pressure caused by a working fluid of R-134a, the test section was made out of a brass plate by machining channels (2mm x 2mm x100mm) and covering it with a transparent plastic plate. The number of channels was three or six. In the case of six-channel test section, the effect of the combination of different channel sizes was also examined by replacing two channels out of six with those having larger side length of 4mm. Three-channel test section showed the unidirectional circulating flow or the oscillating flow depending on the temperature difference between two headers. In the results of the six-channel test section, the transported heat increased by combining two channel sizes. The image processing system developed in this study can capture the upward and downward flow velocities, its temporal change, and the flow pattern in the multiple channels. Less

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (20 results)

All 2007 2006

All Journal Article (20 results) (of which Peer Reviewed: 6 results)

  • [Journal Article] Quantitative Description of the Inner Flow Behavior of Two-Phase Heat Transport Device Using Image Sequence Processing2007

    • Author(s)
      J. Hemrle, T. Onishi, S. Mochizuki, and A. Murata
    • Journal Title

      Proc. of 6th Pacific Symp. on Flow Visualization and Image Processing, 16-19 May 2007, Hawaii, USA

      Pages: 1-6

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] 相変化を伴う二本の並行細管よりなる熱輸送デバイス(Part II)2007

    • Author(s)
      A. Cirtog, 望月 貞成, 村田 章, J. Hemrle
    • Journal Title

      第44回日本伝熱シンポジウム講演論文集 II

      Pages: 165-166

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Quantitative Description of the Inner Flow Behavior of a Two-Phase He at Transport Device Using Image Sequence Processing2007

    • Author(s)
      Hemrle, J., Onishi, T., Cirtog, A., Mochizuki, S., and Murata, A.
    • Journal Title

      Journal of Flow Visualization and Image Processing 14

      Pages: 417-430

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Heat Transport Device with Phase Change Using Two Parallel Tubes2007

    • Author(s)
      Cirtog, A. P., Mochizuki, S., Murata, A., and Ionel, I.
    • Journal Title

      Thermal Science and Engineering 15

      Pages: 241-244

    • NAID

      10019725209

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Characteristics of Two Phase Heat Transport Device with Multiple Parallel Tubes2007

    • Author(s)
      Cirtog, A. P., 望月貞成, 村田章
    • Journal Title

      日本機械学会熱工学コンファレンス2007(京都)講演論文集

      Pages: 383-384

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 3本の平行細管からなる二相熱輸送デバイス内の流動現象2007

    • Author(s)
      井上大祐, 大西徹夫, 望月貞成, 村田章
    • Journal Title

      日本機械学会熱工学コンファレンス2007(京都)講演論文集

      Pages: 385-386

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary
  • [Journal Article] Quantitative Description of the Inner Flow Behavior of Two-Phase Heat Transport Device Using Image Sequence Processing2007

    • Author(s)
      J., Hemrle, T., Onishi, S., Mochizuki, A., Murata
    • Journal Title

      Proc. of 6th Pacific Symp. on Flow Visualization and Image Processing 16-19

      Pages: 1-6

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Heat Transport Device with Phase Change Using Two Parallel Tubes (part II)2007

    • Author(s)
      A., Cirtog, S., Mochizuki, A., Murata, J., Hemrle
    • Journal Title

      Proc. of 44th National Heat Transfer Symp Vol. II

      Pages: 165-166

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Quantitative Description of the Inner Flow Behavior of a Two-Phase Heat Transport Device Using Image Sequence Processing2007

    • Author(s)
      J., Hemrle, T., Onishi, A., Cirtog, S., Mochizuki, A., Murata
    • Journal Title

      Journal of Flow Visualization and Image Processing Vol. 14

      Pages: 417-430

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Heat Transport Device with Phase Change Using Two Parallel Tubes2007

    • Author(s)
      A.P., Cirtog, S., Mochizuki, A., Murata, I., Ionel
    • Journal Title

      Thermal Science and Engineering Vol. 15

      Pages: 241-244

    • NAID

      10019725209

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Characteristics of Two Phase Heat Transport Device with Multiple Parallel Tubes2007

    • Author(s)
      A.P., Cirtog, S., Mochizuki, A., Murata
    • Journal Title

      Proc. of JSME Thermal Engineering Conf., Kyoto

      Pages: 383-384

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Flow Phenomena in Two Phase Heat Transport Device with Three Parallel Tubes2007

    • Author(s)
      D., Inoue, T., Onishi, S., Mochizuki, A., Murata
    • Journal Title

      Proc. of JSME Thermal Engineering Conf., Kyoto

      Pages: 385-386

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Quantitative Description of the Inner Flow Behavior of a Two-Phase Heat Transport Device Using Image Sequence Processing2007

    • Author(s)
      Hemrle, J., Onishi, T., Cirtog, A., Mochizuki, S., and Murata, A.
    • Journal Title

      Journal of Flow Visualization and Image Processing 14

      Pages: 417-430

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heat Transport Device with Phase Change Using Two Parallel Tubes2007

    • Author(s)
      Cirtog, A.P., Mochizuki, S., Murata, A., and Ionel, I.
    • Journal Title

      Thermal Science and Engineering 15

      Pages: 241-244

    • NAID

      10019725209

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characteristics of Two Phase Heat Transport Device with Multiple Parallel Tubes2007

    • Author(s)
      Cirtog, A.P., 望月貞成, 村田章
    • Journal Title

      日本機械学会熱工学コンファレンス2007(京都)講演論文集

      Pages: 383-384

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Quantitative Description of the Inner Flow Behavior of Two-Phase Heat Transport Device Using Image Sequence Processing2007

    • Author(s)
      J.Hemrle, T.Onishi, S.mochizuki, A.Murata
    • Journal Title

      The 6th Pacific Symposium on Flow Visualization and Image Processing, 16-19 May 2007, Hawaii, USA

      Pages: 1-6

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 相変化を伴う二本の並行細管よりなる熱輸送デバイス(Part II)2007

    • Author(s)
      A.Cirtog, 望月 貞成, 村田 章, J.Hemrle
    • Journal Title

      第44回 日本伝熱シンポジウム講演論文集 Vol. II

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Heat Transport Device with Boiling-Driven Recirculating Flow2006

    • Author(s)
      Cirtog, A., Mochizuki, S., Murata, A., and Ionel, I.
    • Journal Title

      CD-ROM Proc. of 17th Int. Symp. on Transport Phemom., ISTP-17, Toyama, Sept. 4-8, 2006, 3-E-I-2

      Pages: 1-5

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Heat Transport Device with Boiling-Driven Recirculating Flow2006

    • Author(s)
      A., Cirtog, S., Mochizuki, A., Murata, I., Ionel
    • Journal Title

      Proc. of 17th Int. Symp. on Transport Phemom., ISTP-17, Toyama 3-E-I-2(CD-ROM)

      Pages: 1-5

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Heat Transport Device with Boiling-Driven Recirculating Flow2006

    • Author(s)
      Cirtog, A., Mochizuki, S., Murata, A., Ionel, I.
    • Journal Title

      CD-ROM Proc. of the 17th Int. Symp. on Transport Phemom., ISTP-17, Toyama, Sept. 4-8, 2006, 3-E-I-2

      Pages: 1-5

    • Related Report
      2006 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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