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

Development of Radial Expansion microchannel Cooler for High Heat Flux Data Center Cooling

Research Project

Project/Area Number 20K04320
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionUniversity of Fukui (2021-2022)
The University of Tokyo (2020)

Principal Investigator

Dang Chaobin  福井大学, 学術研究院工学系部門, 准教授 (30401227)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords流動安定性 / 自己吸引沸騰 / 高熱流束冷却 / データセンター冷却 / 薄液膜蒸発 / 濡れ性 / レーザ共焦点変位計 / データセンタ冷却 / マイクロチャネル / 流動沸騰 / 流動不安定 / ヘルムホルツ共鳴器
Outline of Research at the Start

データセンターが使用する電力量は世界全体のエネルギー需要に対して約2%を占めており、年間10%ずつ増大している。特に近年は、ビッグデータやAIなどに活用されるような高性能HPCサーバが急速に拡大し、それらは処理能力が高い半面,電力消費量,発熱量も増大している。データセンターを確実に冷却でき、かつ省エネルギーシステムの構築が求められている。
本研究は、データセンターの性能向上、省エネ及びエネルギー利用効率向上に有効な相変化冷却・熱回収システムを着目し、CPUなどから潜熱として回収して、吸着冷凍機による冷却用動力、あるいはデシカント空調によりデータセンターの湿度調節を有効利用システムを開発する。

Outline of Final Research Achievements

Firstly, the characteristics of thin liquid films in microchannels were evaluated using a laser confocal displacement meter and numerical analysis, confirming that the liquid films in triangular and rectangular tubes are thin. In addition, the characteristics of flow boiling and self-suction boiling using expanded channels were evaluated. The spontaneous flow characteristics of bubbles in the flow path were studied, revealing that expansion forces and surface tension affect the movement of the bubbles. Flow boiling experiement using expanded channels confirmed the configuration of a cooler network is possible through the series and parallel connection of coolers proposed. Furthermore, experimental results of boiling heat transfer characteristics of the heated surface facing downwards using expanded channels, and the self-suction boiling with a porous layer on the expanded flow path, confirmed that self-suction boiling has a higher cooling performance than pool boiling.

Academic Significance and Societal Importance of the Research Achievements

データセンターなどの電子機器やシステムの性能が向上するとともに、効率的な冷却手法の開発が求められている。本研究では、拡張流路を用いた流動沸騰および自己吸引沸騰手法を提案した。従来のシステムより流動安定性と伝熱性能が優れている上に、高熱流束や多熱源への対応も可能である。また、加熱面が下向きの条件での高性能な冷却を確認し、微小重力環境でも相変化伝熱システムの構築が可能になる。
さらに、薄液膜蒸発の流動と伝熱特性について実験、数値解析を行った結果、伝熱管の形状、流体の物性、運転条件が伝熱特性にどのように影響を与えるかを明らかにした。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (44 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (17 results) (of which Int'l Joint Research: 15 results,  Peer Reviewed: 17 results) Presentation (24 results) (of which Int'l Joint Research: 9 results,  Invited: 7 results) Remarks (1 results)

  • [Int'l Joint Research] 中山大学/重慶大学(中国)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] 天津大学/中山大学/重慶大学(中国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Review on state-of-the-art research in pool and flow boiling under microgravity2023

    • Author(s)
      Sihui Hong, JiaXu Wang, Zhijie Gao, Chaobin Dang
    • Journal Title

      Experimental Thermal and Fluid Science

      Volume: 144 Pages: 110848-110848

    • DOI

      10.1016/j.expthermflusci.2023.110848

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental study on suppressing heat transfer deterioration of supercritical CO2 in vertical tubes based on Helmholtz oscillator2023

    • Author(s)
      Yong Cao, Xiaoxiao Xu, Dan Li, Chao Liu, Chaobin Dang
    • Journal Title

      Applied Thermal Engineering

      Volume: 225 Pages: 120198-120198

    • DOI

      10.1016/j.applthermaleng.2023.120198

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An experimental investigation of subcooled pool boiling on downward-facing surfaces with microchannels2023

    • Author(s)
      Zhijie Gao, Sihui Hong, Chaobin Dang
    • Journal Title

      Applied Thermal Engineering

      Volume: 226 Pages: 120283-120283

    • DOI

      10.1016/j.applthermaleng.2023.120283

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental Study of Frosting Cleaning Process on Superhydrophobic Copper Surface2023

    • Author(s)
      Yingling Li, Minxia Li, Chaobin Dang, Huanxin Chen
    • Journal Title

      International Journal of Refrigeration

      Volume: - Pages: 87-96

    • DOI

      10.1016/j.ijrefrig.2023.03.012

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of surface wettability on dust removal characteristics during frosting cleaning process2023

    • Author(s)
      Yingling Li, Minxia Li, Chaobin Dang
    • Journal Title

      Applied Thermal Engineering

      Volume: 229 Pages: 120592-120592

    • DOI

      10.1016/j.applthermaleng.2023.120592

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mathematical modeling investigation on flow boiling and high efficiency heat dissipation of two rectangular radial microchannel heat exchangers2022

    • Author(s)
      Mengjie Song, Zhengyong Jiang, Chaobin Dang,Yuyan Jiang, Jun Shen, Xiaoyan Luo
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 190 Pages: 122736-122736

    • DOI

      10.1016/j.ijheatmasstransfer.2022.122736

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The characteristics and mechanisms of self-excited oscillation pulsating flow on heat transfer deterioration of supercritical CO2 heated in vertical upward tube2022

    • Author(s)
      Dan Li, Xiaoxiao Xu, Yong Cao, Chao Liu, Shijie Zhang, Chaobin Dang
    • Journal Title

      Applied Thermal Engineering

      Volume: 202 Pages: 117839-117839

    • DOI

      10.1016/j.applthermaleng.2021.117839

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental investigation and theoretical analysis on the heat transfer deterioration of supercritical CO2 in mixed and forced convection in vertical-straight tube with downward flow2022

    • Author(s)
      Shijie Zhang, Xiaoxiao Xu, Chao Liu, Xiaoxiao Li, Chuang Wu, Chaobin Dang
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 187 Pages: 122510-122510

    • DOI

      10.1016/j.ijheatmasstransfer.2021.122510

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Solidification Thermal Behavior of Fin Heat Exchanger with Phase Change Material for Electric Vehicle Thermal Management2022

    • Author(s)
      Hong Seok Kim, Eiji Hihara, Chaobin Dang
    • Journal Title

      International Journal of Automotive Technology

      Volume: 23 Issue: 1 Pages: 257-264

    • DOI

      10.1007/s12239-022-0022-1

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of dissolved gas on the nucleation and growth of ice crystals in freezing droplets2022

    • Author(s)
      Yingling Li, Minxia Li, Chaobin Dang, Xuetao Liu
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 184 Pages: 122334-122334

    • DOI

      10.1016/j.ijheatmasstransfer.2021.122334

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Desorption characteristic of LiBr-H2O solution in hydrophobic hollow fiber membrane for absorption chiller2021

    • Author(s)
      Jiacheng He, Ryusuke Hirata, Eiji Hihara, Chaobin Dang
    • Journal Title

      Applied Thermal Engineering

      Volume: 195 Pages: 117164-117164

    • DOI

      10.1016/j.applthermaleng.2021.117164

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Condensation heat and mass transfer characteristics of low GWP zeotropic refrigerant mixture R1234yf/R32 inside a horizontal smooth tube: An experimental study and non-equilibrium film model development2021

    • Author(s)
      Linlin Wang, Pengfei Jiao,Chaobin Dang, Eiji Hihara, Baomin Dai
    • Journal Title

      International Journal of Thermal Science

      Volume: 170 Pages: 107090-107090

    • DOI

      10.1016/j.ijthermalsci.2021.107090

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of two-phase flow microchannel heat sink applied to solar-tracking high-concentration photovoltaic thermal hybrid system2020

    • Author(s)
      Sihui Hong, Bohan Zhang, Chaobin Dang, Eiji Hihara
    • Journal Title

      Energy

      Volume: 212 Pages: 118739-118739

    • DOI

      10.1016/j.energy.2020.118739

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improved two-phase flow boiling in a minichannel heat sink for thermal management of information and communication technology (ICT) equipment2020

    • Author(s)
      Sihui Hong, Chaobin Dang, Eiji Hihara, Hitoshi Sakamoto, Mizuki Wada
    • Journal Title

      Applied Thermal Engineering

      Volume: 181 Pages: 119957-119957

    • DOI

      10.1016/j.applthermaleng.2020.115957

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A 3D inlet distributor employing copper foam for liquid replenishment and heat transfer enhancement in microchannel heat sinks2020

    • Author(s)
      Sihui Hong, Chaobin Dang, Eiji Hihara
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 157 Pages: 119934-119934

    • DOI

      10.1016/j.ijheatmasstransfer.2020.119934

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Experimental investigation on flow boiling characteristics of radial expanding minichannel heat sinks applied for two-phase flow inlet2020

    • Author(s)
      Sihui Hong, Chaobin Dang, Eiji Hihara
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 151 Pages: 119316-119316

    • DOI

      10.1016/j.ijheatmasstransfer.2020.119316

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Wettability effect on pool boiling heat transfer using a multiscale copper foam surface2020

    • Author(s)
      Juan Shi, Xi Jia, Dongyang Feng, Zhenqian Chen, Chaobin Dang
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 146 Pages: 118726-118726

    • DOI

      10.1016/j.ijheatmasstransfer.2019.118726

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Experimental Investigation on Effects of Inlet and Outlet structures in Expanding Micro Channel Heat Sinks2022

    • Author(s)
      Yang S., Hong S., Li C., Nishigawa R., Dang C., Chen Y.
    • Organizer
      10th Asian Conference on Refrigeration and Air-conditioning (ACRA2022)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] erformance evaluation of radial expanding minichannel heat sinks for thermal management of multiple information and communication technology (ICT) equipment with parallel/series connection configuration2022

    • Author(s)
      Li C., Dang C., Hong S., Song M., Sakamoto H., Wada M.
    • Organizer
      The 32nd International Symposium on Transport Phenomena
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pool boiling enhancement via bubble elongation induced liquid-vapor seprarated flow paths2022

    • Author(s)
      Hong S., Dang C., Gao Z., Mo S.
    • Organizer
      The 32nd International Symposium on Transport Phenomena
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 次世代データセンター用高効率省エネ冷却システムの開発2022

    • Author(s)
      波多野颯太、李 成智、楊 少博、党 超鋲
    • Organizer
      日本機械学会北陸信越支部2022年合同講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 衝撃波の可視化観察2022

    • Author(s)
      渡邉 寛仁 、党 超鋲
    • Organizer
      日本機械学会北陸信越支部2022年合同講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 可変流路自励振動型ヒートパイプに関する研究2022

    • Author(s)
      笹木航大 、李 成智、楊 少博、党 超鋲
    • Organizer
      日本機械学会北陸信越支部2022年合同講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] 放射拡張流路に関する研究2022

    • Author(s)
      西川竜之介 、李 成智、楊 少博、党 超鋲
    • Organizer
      日本機械学会北陸信越支部2022年合同講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] マイクロチャンネル内における気液二相流の流動様式と液膜厚さの測定2022

    • Author(s)
      山田瑛大 、李 成智、楊 少博、党 超鋲
    • Organizer
      日本機械学会北陸信越支部2022年合同講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Enhancement on two phase flow boiling via expanding micro channel heat sinks2021

    • Author(s)
      Yang S., Hong S., Dang C., Chen Y.
    • Organizer
      International Conference on Power Engineering 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study on Two Phase Flow Microchannel Heat Sink Applied to Solar-tracking High concentration Photovoltaic Thermal Hybrid System2021

    • Author(s)
      Yang S.,Hong S.,Zhang B.,Dang C.,Chen Y.
    • Organizer
      11th international sysmposium on solar energy and efficient energy usage
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Recent Progress in the High Heat Flux Electronic Cooling2021

    • Author(s)
      Chaobin Dang
    • Organizer
      FLUTE - 2021 : International Symposium on Fluids and Thermal Engineering
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] マイクロチャネルヒートシンクでの二相流沸騰に関する研究2021

    • Author(s)
      楊 少博, 洪 思慧, 党 超鋲, 陳昱
    • Organizer
      第 58 回日本伝熱シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 自発的な気泡の脱出と液体の補充メカニズムによるプール沸騰の強化に関する研究2021

    • Author(s)
      楊 少博, 洪 思慧, 党 超鋲, 陳昱
    • Organizer
      第 58 回日本伝熱シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 凍結洗浄過程における伝熱面濡れ性の影響2021

    • Author(s)
      李 穎玲, 李 敏霞, 党 超鋲
    • Organizer
      2021年度 日本冷凍空調学会 年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] C20H42を用いた2重管熱交換器の放熱特性に関する研究2021

    • Author(s)
      金 洪碩, 党 超鋲, 飛原 英治
    • Organizer
      2021年度 日本冷凍空調学会 年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 可変流路自励振動型ヒートパイプに関する研究2021

    • Author(s)
      笹木 航大, 高山 晶帆, 党 超鋲
    • Organizer
      2021年度 日本冷凍空調学会 年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 微細流路における気液二相流の薄液膜挙動の計測2021

    • Author(s)
      党超鋲
    • Organizer
      日本伝熱学会 北陸信越支部 2021 秋季セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 可変流路 自励振動型ヒートパイプの 起動特性 に関する研究2020

    • Author(s)
      髙山 晶帆, 党 超鋲, 洪 思慧, 飛原 英治
    • Organizer
      2020年度日本機械学会熱工学コンファレンス
    • Related Report
      2020 Research-status Report
  • [Presentation] 拡張流路を用いた高熱流束電子機器冷却性能向上に関する研究2020

    • Author(s)
      党 超鋲, 洪 思慧
    • Organizer
      2020年度日本機械学会熱工学コンファレンス
    • Related Report
      2020 Research-status Report
  • [Presentation] 高集光倍率太陽光発電・太陽熱コジェネレーションシステムの開発 (Ⅰ)システムデザイン2020

    • Author(s)
      党 超鋲
    • Organizer
      日本機械学会2020 年度年次大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 高集光倍率太陽光発電・太陽熱コジェネレーションシステムの開発 (Ⅱ)太陽電池の冷却と発電性能2020

    • Author(s)
      党 超鋲
    • Organizer
      日本機械学会2020 年度年次大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Development of two-phase flow microchannel heat sink applied to high-concentration photovoltaic thermal hybrid system2020

    • Author(s)
      Chaobin Dang
    • Organizer
      2nd International Conference on Future Learning Aspects of Mechanical Engineering (FLAME - 2020)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of two-phase flow microchannel heat sink applied to high-concentration photovoltaic thermal hybrid system2020

    • Author(s)
      Chaobin Dang
    • Organizer
      2020 Dalian University of Technology-Overseas Partner Universities Series Online Exchange Conference
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of a radial expanding microchannel heat sink applied to solar-tracking high concentrating photovoltaic thermal system2020

    • Author(s)
      Chaobin Dang
    • Organizer
      Sino‐Japan‐UK Frontiers in Phase Change Heat Transfer and Its Applications in Energy
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Remarks] 新型自己吸引沸騰型冷却手法の開発

    • URL

      http://mech.u-fukui.ac.jp/~dang/Research/self-suction%20boiling.html

    • Related Report
      2022 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi