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Study on Solid-Liquid Phase Change Mechanism in Fine Space

Research Project

Project/Area Number 19H02498
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 27010:Transport phenomena and unit operations-related
Research InstitutionKobe University

Principal Investigator

Suzuki Hiroshi  神戸大学, 工学研究科, 教授 (90206524)

Co-Investigator(Kenkyū-buntansha) 日出間 るり  神戸大学, 工学研究科, 准教授 (20598172)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Keywords相変化 / 硬殻マイクロカプセル / マイクロ流路 / 蓄熱 / 過冷却
Outline of Research at the Start

申請者らが独自に開発したシリカ硬殻マイクロカプセルにこれまで過冷却が大きいためほとんど実用化されていなかった無機水和物を内包したところ過冷却がほとんど生じないことが明らかとなった.この特異な現象のメカニズムに関して,本研究では逆Gibbs-Thomson効果仮説,水分子偏在仮説および気泡核生成仮説の3つの仮説をたて,いずれのメカニズムによって生ずるかを,実験および数値計算によって明らかにする.

Outline of Final Research Achievements

In order to investigate the mechanism of super-cooling disappearance of phase change materials in silica hard-shell microcapsules, an experimental study has been performed based on three hypotheses; inverse Gibbs-Thomson effect, heterogeneous structure of water molecule and bubble nucleation.
From the results, the water molecules forms the heterogenous structure in the capsules was found to occur in the capsules. Thus, the hydrate number locally decreased and the freezing point increased. This is the primary mechanism on the super-cooling disappearance.

Academic Significance and Societal Importance of the Research Achievements

シリカ硬殻マイクロカプセル内における過冷却解消現象のメカニズムを初めて明らかにした.
また,この知見によって,蓄熱利用技術で最大の問題となっている過冷却現象を解決する新たな技術開発が可能となり,カーボンニュートラルに向けた高度熱マネージメントシステムの開発が飛躍的に進むと期待される.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (17 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 6 results,  Invited: 10 results) Book (1 results)

  • [Journal Article] Effects of channel geometry and physicochemical properties of solutions on stable double emulsion production in planar microfluidic devices having triangular orifices2021

    • Author(s)
      Ruri Hidema, Ryotaro Ohashi, Susan J. Muller, Hiroshi Suzuki
    • Journal Title

      AIP Advances

      Volume: 11 Issue: 6 Pages: 065219-065219

    • DOI

      10.1063/5.0055436

    • NAID

      120007163982

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Impacts of the Surfactant Concentration on the Sedimentation Characteristics of Silica Hard-Shell Microcapsules Containing Phase Change Materials2020

    • Author(s)
      Usa Sohei、Hidema Ruri、Komoda Yoshiyuki、Horie Takafumi、Taniya Keita、Ichihashi Yuichi、Ohmura Naoto、Nishiyama Satoru、Asano Hitoshi、Suzuki Hiroshi
    • Journal Title

      JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

      Volume: 53 Issue: 8 Pages: 431-437

    • DOI

      10.1252/jcej.19we123

    • NAID

      130007889029

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Flow and sedimentation characteristics of silica hard-shell microcapsule slurries treated with additives2019

    • Author(s)
      Suzuki Hiroshi、Hidema Ruri、Usa Sohei、Horie Takafumi、Komoda Yoshiyuki、Ohmura Naoto、Taniya Keita、Ichihashi Yuichi、Nishiyama Satoru、Asano Hitoshi
    • Journal Title

      International Journal of Refrigeration

      Volume: 106 Pages: 18-23

    • DOI

      10.1016/j.ijrefrig.2019.07.007

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Hard-Shell Microcapsules Containing Phase Change Materials for Latent Heat Transportation2022

    • Author(s)
      Hiroshi Suzuki
    • Organizer
      13th Asian Thermophysical Properties Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 熱輸送の高効率化に対する希薄溶液および微粒子分散系レオロジーの応用2021

    • Author(s)
      鈴木洋
    • Organizer
      日本レオロジー学会第58年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] カーボンニュートラルに向けた熱マネージメント2021

    • Author(s)
      鈴木洋
    • Organizer
      日本伝熱学会関西支部28期第2回講演討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Development of Hard-Shell Micro-Encapsulated Phase Change Materials2021

    • Author(s)
      Hiroshi Suzuki
    • Organizer
      11th International Synposium on Solar Energy and Efficient Energy Usage (SOLARIS2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Silica Hard-Shell Mirocapsules Containing Phase Change Materials2021

    • Author(s)
      Hiroshi Suzuki
    • Organizer
      11th Annual Kobe University Brussels European Centre Symposium
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 硬殻マイクロカプセル化無機水和物系蓄熱材の過冷却特性2021

    • Author(s)
      森口侑紀,大坪拓夢,日出間るり,谷屋啓太,堀江孝史,市橋祐一 ,菰田悦之,西山覚 大村直人,浅野
    • Organizer
      第10回潜熱工学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 硬殻マイクロカプセル化によるサーマルギャップソリューション2021

    • Author(s)
      鈴木 洋
    • Organizer
      日本伝熱学会関東支部セミナー「未利用熱の活用に関する最新研究紹介」
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 超低炭素社会実現のための熱マネージメント2020

    • Author(s)
      鈴木 洋
    • Organizer
      神戸大学価値創造スマートものづくり研究センター第1回オンラインシンポジウム
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 硬殻マイクロカプセル化蓄熱材がもたらす低炭素社会2020

    • Author(s)
      鈴木 洋
    • Organizer
      日本冷凍空調学会調査研究プロジェクト「地球温暖化に対応するための先進熱交換技術に関する調査研究」第3回委員会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Low Carbon Society Realization by Using Hard-Shell Microcapsules with Phase Change Materials2019

    • Author(s)
      Hiroshi SUZUKI
    • Organizer
      Pacific Rim Thermal Engineering Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hard-Shell Micro-Encapsulation of Phase Change Material by Use of a Coaxial Nozzle2019

    • Author(s)
      Sohei Usa, Ruri Hidema, Takafumi Horie, Keita Taniya, Yoshiyuki Komoda, Yuichi Ichihashi, Naoto Ohmura, Satoru Nishiyama and Hiroshi Suzuki
    • Organizer
      JST International Workshop on Latent Heat Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hard-Shell Micro-Encapsulation of Na2HPO4 Hydrates-Impacts of Coating Process-2019

    • Author(s)
      Nana Ibaraki, Ruri Hidema, Keita Taniya, Takafumi Horie, Yoshiyuki Komoda, Yuichi Ichihashi, Naoto Ohmura, Satoru Nishiyama, Hitoshi Asano, Hiroshi Suzuki
    • Organizer
      JST International Workshop on Latent Heat Engineering
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シリカ硬殻マイクロカプセル化蓄熱材による潜熱輸送2019

    • Author(s)
      鈴木 洋
    • Organizer
      混相流シンポジウム
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Book] 熱エネルギーの有効活用に向けた蓄熱技術開発2022

    • Author(s)
      鈴木洋
    • Total Pages
      260
    • Publisher
      シーエムシー出版
    • ISBN
      9784781316659
    • Related Report
      2021 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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