NameTsubaki Koutaro
DepartmentDepartment of Mechanical Engineering
Job TitleAssistant Professor Degree Obtained
  • Master (Engineering)
  • Doctor (Engineering)
E-mailtsubakik(a)cc.saga-u.ac.jp
Homepagehttp://tsubaki.me.saga-u.ac.jp/
http://tsubaki.me.saga-u.ac.jp/index-e.html

Detailed Information

Research Field/Keywords for Research Field

  • Thermal Engineering

Education

  • 2001/03, Department of Human & Mechanical Systems Engineering, Graduated
  • 2003/03, Master Course, Completed
  • 2006/03, Doctor Course, Completed

Employment Experience

  • 2003/10 - 2006/03
  • 2006/04 - 2007/03 Research Associate, Mechanical Engineering , Faculty of Science and Engineering, Saga University
  • 2007/04 - 2010/03 Assistant Professor, Mechanical Engineering , Faculty of Science and Engineering, Saga University
  • 2010/04 -  *  Assistant Professor, Mechamical Engineering, Graduate School of Science and Engineering, Saga University

Field of Specialization

  • Thermal engineering

Awards

  • 日本冷凍空調学会奨励賞 (2008/05)

Research Topics and Results

  • 柱上高圧開閉器内部の消弧グリッドでの冷却現象の伝熱評価 2023/10
  • Effect of Groundwater Flow on Horizontal Ground Heat Exchanger 2022/11
  • Performance evaluation of an eight-tube ground heat exchanger using TRT data 2021/00
  • Evaporation time and vapor generation limit of a droplet on a hot surface 2021
  • Inherent characteristics of interface temperature behavior after sudden contact of liquid and oxidized hot metal surface 2019
  • 新浅埋地中熱利用システム「Geo-MexR3」の開発 2017
  • Characteristics of gas permeability and effective thermal conductivity in metal hydride packed bed of CaNi5 2016
  • Performance of ground-source heat exchangers using short residential foundation piles 2016
  • Application of the Spray Quenching to T6 Heat Treatment of Thick A6061 Hollow Cylinders 2015
  • Characteristics of Transient Heat Transfer and Wetting Phenomena During Laminar Jet Quenching on Rotating Cylinder 2015
  • Ground Source Heat Pump System Controlled by Refrigerant Average Density 2015
  • Measurement and Observation of Elementary Transition Boiling Process after Sudden Contact of Liquid with Hot Surface 2015
  • Ground source heat pump system controlled by refrigerant average density 2014/12
  • Measurement and Observation of Elementary Transition Boiling Process after Sudden Contact of Liquid with Hot Surface, 2014/12
  • Characteristics of transient heat transfer and wetting phenomena during laminar jet quenching on rotating cylinder 2014/12
  • Application of the spray quenching to T6 heat treatment of thick A6061 hollow cylinders 2014/12
  • The novel cycle suit for a ground source heat application 2014/09
  • 温暖地域における地中熱の空調利用に適したサイクル 2014/05
  • 住宅用基礎杭を用いた新たな地中熱利用システムの開発 2014/03
  • 遷臨界CO2二相流エジェクタサイクルにおけるノズル出口断面積の影響, 2011/12
  • R1234ze(E)+R32およびR1234yf+R32混合冷媒の飽和液の熱伝導率測定 2011/12
  • 二相流エジェクタの形状がサイクル性能に与える影響 2011/04
  • Experimental study of several types of ground heat exchanger using a steel pile foundation 2011
  • MEASUREMENT OF THE THERMAL CONDUCTIVITY OF HFO-1234ZE(E)+HFC32 MIXTURE REFRIGERANT 2010/12
  • Experimental study on evaporation heat transfer of CO2/DME mixture refrigerant in a horizontal smooth tube 2010/11
  • CO2ヒートポンプサイクルにおける圧縮機オイル濃度の影響 2010/09
  • Two-phase Flow Distribution of Air Water in A Distributor at Different Inclination 2010/09
  • Effect of inclination on the two-phase flow in a distributor 2009/11
  • Numerical Simulation of Contact Condition Effects on Heat Exchanger Performance 2009/06
  • Numerical Simulation of Upwelling Flow in Pipe Generated by Perpetual Salt Fountain 2007/12
  • クロスフィンチューブ熱交換器におけるフィンカラー形状が伝熱性能に及ぼす影響 2007/12
  • EXPERIMENTAL HEAT TRANSFER AND PRESSURE DROP OF CO2/ DME MIXTURE REFRIGERANT INSIDE HORIZONTAL SMOOTH TUBE 2007/10
  • CO2/DME混合冷媒を用いたヒートポンプサイクルの性能解析 2007/10
  • 地中熱交換システムの開発 2007/09
  • A Study on the Effects of Fin Collar Shape on the Heat Transfer Performance of Fin-tube Heat Exchangers 2007/08
  • フィンカラーと伝熱管の接触形状が伝熱性能に及ぼす影響 2007/05
  • Two-Phase Flow Behaviour in Herringbone Microfin Tubes 2007/05
  • Prediction of friction factor for single-phase flow inside microfin tubes 2007/05
  • Continuous measurement of an artificial upwelling of deep sea water induced by the perpetual salt fountain 2007
  • フィンチューブ熱交換器の生産過程の形状変化が伝熱性能に及ぼす影響 2006/10
  • 永久塩泉による管内自然対流の数値シミュレーション 2006/05
  • Estimation of Upwelling by the Perpetual Salt Fountain for Sea Planting 2005/04
  • Creation of Ocean Forest by Upwelling of Deep Seawater Using Perpetual Salt Fountains 2004/11
  • Measurement of Upwelling Flow Velocity Generated by the Perpetual Salt Fountain in the Pacific 2004/11
  • 永久塩泉による化石燃料を使わない海洋深層水の汲み上げ 2004/10
  • 海洋深層水汲み上げによる海洋緑化-ラピュタ計画- 2004
  • Artificial Upwelling of Deep Seawater Using the Perpetual Salt Fountain for Cultivation of Ocean Desert 2004
  • Flow prediction in upwelling deep seawater-the perpetual salt fountain 2004

Original Articles

  • 柱上高圧開閉器内部の消弧グリッドでの冷却現象の伝熱評価; 2023/10
    ANNOUNCEMENT INFO.; , 89, 926, 23-00055
    AUTHOR; 
  • Performance evaluation of an eight-tube ground heat exchanger using TRT data; 2021/00
    ANNOUNCEMENT INFO.; Heat Transfer Research, 52, 13, 1-10
    AUTHOR; Koutaro Tsubaki, Toshihide Morikawa, Aya Yabuki, Yasuo Tanaka, Yusuke Satoh, Hiroaki Okubo
  • Evaporation time and vapor generation limit of a droplet on a hot surface; 2021
    ANNOUNCEMENT INFO.; International Journal of Heat and Mass Transfer, 173, 121280
    AUTHOR; Y. Liu, M. Monde, Y. Mitsutake, K. Tsubaki
  • Inherent characteristics of interface temperature behavior after sudden contact of liquid and oxidized hot metal surface; 2019
    ANNOUNCEMENT INFO.; Thermal Science and Engineering, 27, 1, 17-23
    AUTHOR; Yang LIU, Mohamed Shoieb Abdelgawad, Yuichi MITSUTAKE, Koutaro TSUBAKI, Masanori MONDE
  • Performance of ground-source heat exchangers using short residential foundation piles; 2016
    ANNOUNCEMENT INFO.; Energy, 104, 229-236
    AUTHOR; Koutaro Tsubaki, Yuichi Mitsutake
  • Application of the Spray Quenching to T6 Heat Treatment of Thick A6061 Hollow Cylinders; 2015
    ANNOUNCEMENT INFO.; Procedia Engineering, 105, 776-786
    AUTHOR; Hisayoshi Soejima,Yuichi Mitsutake,Suhaimi Illias,Koutarou Tsubaki,Masanori Monde
  • Characteristics of Transient Heat Transfer and Wetting Phenomena During Laminar Jet Quenching on Rotating Cylinder; 2015
    ANNOUNCEMENT INFO.; Procedia Engineering, 105, 787-797
    AUTHOR; Shinya Tsuboyama,Tomofumi Higashi,Yuichi Mitsutake,Suhaimi bin Illias,Aloke Kumar Mazumder,Koutaro Tsubaki,Masanori Monde
  • Ground Source Heat Pump System Controlled by Refrigerant Average Density; 2015
    ANNOUNCEMENT INFO.; Procedia Engineering, 105, 153-159
    AUTHOR; Koutaro Tsubaki,Yuichi Mitsutake
  • Measurement and Observation of Elementary Transition Boiling Process after Sudden Contact of Liquid with Hot Surface; 2015
    ANNOUNCEMENT INFO.; Procedia Engineering, 105, 5-21
    AUTHOR; Yuichi Mitsutake,Suhaimi Illias,Koutarou Tsubaki,Mohammad Nasim Hasan,Masanori Monde
  • 遷臨界CO2二相流エジェクタサイクルにおけるノズル出口断面積の影響,; 2011/12
    ANNOUNCEMENT INFO.; , 28, 4, 517-528
    AUTHOR; 
  • R1234ze(E)+R32およびR1234yf+R32混合冷媒の飽和液の熱伝導率測定; 2011/12
    ANNOUNCEMENT INFO.; , 28, 4, 435-443
    AUTHOR; 
  • Experimental study of several types of ground heat exchanger using a steel pile foundation; 2011
    ANNOUNCEMENT INFO.; Renewable Energy, 36, 764-771
    AUTHOR; Jalaluddin, Akio Miyara, Koutaro Tsubaki, Shuntaro Inoue, Kentaro Yoshida
  • Evidences of increasing primary production in the ocean by Stommel's perpetual salt fountain; 2011
    ANNOUNCEMENT INFO.; Deep Sea Research Part I, 58, 5, 567-574
    AUTHOR; Shigenao Maruyama, Takashi Yabuki, Tetsuya Sato, Koutaro Tsubaki, Atsuki Komiya, Mikihito Watanabe, Hiroshi Kawamura, Katsumi Tsukamoto
  • Experimental study on evaporation heat transfer of CO2/DME mixture refrigerant in a horizontal smooth tube; 2010/11
    ANNOUNCEMENT INFO.; International Journal of Refrigeration, 33, 1277-1291
    AUTHOR; Yoji Onaka, Akio Miyara, Koutaro Tsubaki
  • 伝熱管とフィン接触部におけるフィンカラー形状が熱交換器性能に及ぼす影響; 2010/06
    ANNOUNCEMENT INFO.; , 27, 2, 63-71
    AUTHOR; 
  • CO2/DME混合冷媒を用いたヒートポンプサイクルの性能解析; 2009/09
    ANNOUNCEMENT INFO.; , 26, 3, 53-60
    AUTHOR; 
  • Heat transfer coefficients and pressure drops during in-tube condensation of CO2/DME mixture refrigerant; 2008
    ANNOUNCEMENT INFO.; International Journal of Refrigeration, 31, 1458-1466
    AUTHOR; Hasan M.M. Afroz, Akio Miyara, Koutaro Tsubaki
  • クロスフィンチューブ熱交換器におけるフィンカラー形状が伝熱性能に及ぼす影響; 2007/12
    ANNOUNCEMENT INFO.; , 24, 4, 121-128
    AUTHOR; 
  • Continuous measurement of an artificial upwelling of deep sea water induced by the perpetual salt fountain; 2007
    ANNOUNCEMENT INFO.; DEEP SEA RESEARCH -PART 1-, 54, 1, 75-84
    AUTHOR; Tsubaki, K / Maruyama, S / Komiya, A / Mitsugashira, H
  • Mechanism for enhanced diffusivity in the deep-sea perpetual salt fountain; 2006
    ANNOUNCEMENT INFO.; JOURNAL OF OCEANOGRAPHY, 62, 2, 133-142
    AUTHOR; Zhang, X / Maruyama, S / Tsubaki, K / Sakai, S / Behnia, M
  • 海洋深層水汲み上げによる海洋緑化-ラピュタ計画-; 2004
    ANNOUNCEMENT INFO.; , 36, 84-93
    AUTHOR; 
  • Artificial Upwelling of Deep Seawater Using the Perpetual Salt Fountain for Cultivation of Ocean Desert; 2004
    ANNOUNCEMENT INFO.; JOURNAL OF OCEANOGRAPHY, 60, 3, 563-568
    AUTHOR; Maruyama, S / Tsubaki, K / Taira, K / Sakai, S
  • Flow prediction in upwelling deep seawater-the perpetual salt fountain; 2004
    ANNOUNCEMENT INFO.; DEEP SEA RESEARCH -PART 1-, 51, 9, 1145-1157
    AUTHOR; Zhang, X. R / Maruyama, S / Sakai, S / Tsubaki, K / Behnia, M

Material, Commentary, Editorials, Research Report, A Comprehensive Journal Articles

  • 新浅埋地中熱利用システム「Geo-MexR3」の開発; 2017
    ANNOUNCEMENT INFO.; , 26, 11, 52-56
    AUTHOR; 
  • 住宅用基礎杭を用いた新たな地中熱利用システムの開発; 2014/03
    ANNOUNCEMENT INFO.; , 31, 143-147
    AUTHOR; 
  • クロスフィンチューブ熱交換器におけるフィンカラー形状が伝熱性能に及ぼす影響; 2008
    ANNOUNCEMENT INFO.; , 49, 1, 80-86
    AUTHOR; 

General Lectures

  • Effect of Groundwater Flow on Horizontal Ground Heat Exchanger; 2022/11
    ANNOUNCEMENT INFO.; 9th Asian Joint Workshop on Thermophysics and Fluid Science, 4122
    AUTHOR; Koutaro Tsubaki, Retsu Harada
  • 水平に埋設した地中熱交換器による地下水流れの地中熱利用; 2022/07
    ANNOUNCEMENT INFO.; , C111
    AUTHOR; 
  • 柱上高圧開閉器内部の消弧グリッドでの冷却現象の伝熱評価; 2021/07
    ANNOUNCEMENT INFO.; , B115
    AUTHOR; 
  • 水平埋設した地中熱交換器における地下水流れの伝熱への影響; 2021/03
    ANNOUNCEMENT INFO.; 日本機械学会九州支部第 74 期総会・講演会講演論文集, B22
    AUTHOR; 
  • アーク放電により加熱された高圧開閉器内部の伝熱評価; 2020/06
    ANNOUNCEMENT INFO.; , E322
    AUTHOR; 
  • 低設置コストで高性能な地中熱利用; 2019/11
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • HDD工法による水平設置地中熱交換器の伝熱性能; 2019/06
    ANNOUNCEMENT INFO.; , C233
    AUTHOR; 
  • 衝突噴流冷却中のウエッティングフロントの拡大 実験結果と解析モデルの提案; 2019/05
    ANNOUNCEMENT INFO.; , B233
    AUTHOR; 
  • 水平設置Uチューブによる地中熱交換器の伝熱性能; 2019/05
    ANNOUNCEMENT INFO.; , C313
    AUTHOR; 
  • 加熱金属表面上の液滴蒸発に関する実験; 2019/03
    ANNOUNCEMENT INFO.; , 602
    AUTHOR; 
  • Influence of mixing metal powders on thermal conductivity and inverse permeability of metal hydride systems; 2018/10
    ANNOUNCEMENT INFO.; 16th International Symposium on Metal-Hydrogen Systems, 272
    AUTHOR; M. Shoieb, M. Yoshijima, Y. Liu, K. Tsubaki, Y. Mitsutake
  • Simulation study of metal hydride intermediate buffer purification method of reformed crude hydrogen gas; 2018/10
    ANNOUNCEMENT INFO.; 16th International Symposium on Metal-Hydrogen Systems, 273
    AUTHOR; M. Shoieb, M. Yoshijima, K. Yoshida, S. Matsuo, K. Tsubaki, Y. Mitsutake
  • 水平設置した透層内の地中熱交換器性能評価; 2018/06
    ANNOUNCEMENT INFO.; , E124
    AUTHOR; 
  • 透水層内に水平設置した地中熱交換器の伝熱性能; 2018/06
    ANNOUNCEMENT INFO.; , D214
    AUTHOR; 
  • 液体と酸化金属表面との接触時の固液接触界面温度と熱流束変動の特性; 2018/06
    ANNOUNCEMENT INFO.; , G124
    AUTHOR; 
  • サブクール衝突噴流冷却中の高温面上のぬれ開始温度計測; 2017/05
    ANNOUNCEMENT INFO.; , F115
    AUTHOR; 
  • 冷媒密度制御による温暖地域での地中熱空調利用サイクル; 2017/05
    ANNOUNCEMENT INFO.; , B321
    AUTHOR; 
  • 地中熱の空調利用に適したサイクルの計算; 2017/03
    ANNOUNCEMENT INFO.; , 9-10
    AUTHOR; 
  • 水素吸蔵合金CaNi5充填層における通気抵抗および熱輸送特性; 2017/03
    ANNOUNCEMENT INFO.; , 57-58
    AUTHOR; 
  • Characteristics of gas permeability and effective thermal conductivity in metal hydride packed bed of CaNi5; 2016
    ANNOUNCEMENT INFO.; Proceedings of the 4th International Forum on Heat Transfer, IFHT2016, 2040
    AUTHOR; Kazuki Yoshida, Koutaro Tsubaki, Yuichi Mitsutake, Akitoshi Fujisawa, Shinichi Miura
  • 高温面上への液滴衝突時の非定常遷移沸騰過程; 2016
    ANNOUNCEMENT INFO.; , J223
    AUTHOR; 
  • 地中熱の空調利用に適したサイクル関する実験; 2016
    ANNOUNCEMENT INFO.; , D312
    AUTHOR; 
  • 温暖地における地中熱の利用に適した空調用サイクル; 2016
    ANNOUNCEMENT INFO.; , E134
    AUTHOR; 
  • 高温回転中空円筒の非定常ラミナー冷却特性; 2015
    ANNOUNCEMENT INFO.; , E13
    AUTHOR; 
  • 高温面上への液滴衝突時の非定常遷移沸騰熱伝達特性; 2015
    ANNOUNCEMENT INFO.; , E12
    AUTHOR; 
  • クロスフィンチューブ熱交換器におけるフィンカラー形状の影響; 2015
    ANNOUNCEMENT INFO.; , F-11
    AUTHOR; 
  • 高熱伝導性材料の熱物性測定と加速器検出部電子回路冷却への適用の検討; 2015
    ANNOUNCEMENT INFO.; , E325
    AUTHOR; 
  • 高温面上への液滴列衝突時の非定常遷移沸騰過程の計測; 2015
    ANNOUNCEMENT INFO.; , D132
    AUTHOR; 
  • Ground source heat pump system controlled by refrigerant average density; 2014/12
    ANNOUNCEMENT INFO.; 6th BSME International Conference on Thermal Engineering (ICTE 2014), 2.16
    AUTHOR; Koutaro Tsubaki, Yuichi Mitsutake
  • Measurement and Observation of Elementary Transition Boiling Process after Sudden Contact of Liquid with Hot Surface,; 2014/12
    ANNOUNCEMENT INFO.; 6th BSME International Conference on Thermal Engineering (ICTE 2014), 1.02
    AUTHOR; Yuichi MITSUTAKE, Suhaimi ILLIAS, Koutarou TSUBAKI, Mohammad Nasim Hasan, Masanori MONDE
  • Characteristics of transient heat transfer and wetting phenomena during laminar jet quenching on rotating cylinder; 2014/12
    ANNOUNCEMENT INFO.; 6th BSME International Conference on Thermal Engineering (ICTE 2014), 13.03
    AUTHOR; Shinya Tsuboyama, Tomofumi Higashi, Yuichi Mitsutake, Suhaimibin Illias, Aloke Kumar Mazumder, Koutaro Tsubaki, Masanori Monde
  • Application of the spray quenching to T6 heat treatment of thick A6061 hollow cylinders; 2014/12
    ANNOUNCEMENT INFO.; International Conference on Thermal Engineering (ICTE 2014), 13.02
    AUTHOR; Hisayoshi Soejima, Yuichi Mitsutake, Suhaimi Illias, Koutarou Tsubaki, Masanori Monde
  • The novel cycle suit for a ground source heat application; 2014/09
    ANNOUNCEMENT INFO.; Proceedings of 5th Asian Joint Workshop on Thermophysics and Fluid Science, JP31
    AUTHOR; Koutaro Tsubaki, Yuichi Mitsutake
  • 温暖地域における地中熱の空調利用に適したサイクル; 2014/05
    ANNOUNCEMENT INFO.; , H224
    AUTHOR; 
  • 住宅用基礎杭を用いた同軸二重管式地中熱交換器での自然対流の影響; 2013/11
    ANNOUNCEMENT INFO.; , 1002
    AUTHOR; 
  • 同軸二重管式地中熱交換器の熱伝達における自然対流の影響; 2013/10
    ANNOUNCEMENT INFO.; , F143
    AUTHOR; 
  • 地中熱交換器の性能に及ぼす地中温度分布の影響; 2013/09
    ANNOUNCEMENT INFO.; , 7-10
    AUTHOR; 
  • 垂直型地中熱交換器における熱媒体の流動および伝熱特性; 2013/07
    ANNOUNCEMENT INFO.; , 414
    AUTHOR; 
  • 地中熱交換器の伝熱特性に及ぼす自然対流の影響; 2012/06
    ANNOUNCEMENT INFO.; , E324
    AUTHOR; 
  • 住宅用基礎杭を利用した地中熱交換器の伝熱特性; 2012/03
    ANNOUNCEMENT INFO.; , 125-126
    AUTHOR; 
  • 遷臨界CO2エジェクタサイクルにおける駆動流ノズルのど部断面積の影響; 2012/03
    ANNOUNCEMENT INFO.; , 123-124
    AUTHOR; 
  • CO2ヒートポンプサイクルの特性とエジェクタを用いた高性能化; 2011/10
    ANNOUNCEMENT INFO.; , 9-12
    AUTHOR; 
  • THERMAL CONDUCTIVITY OF SATURATED LIQUID OF HFO-1234ze(E) AND HFO-1234ze(E)+HFC-32 MIXTURE; 2011/08
    ANNOUNCEMENT INFO.; The 23rd IIR International Congress of Refrigeration, Prague, Czech Republic, 900
    AUTHOR; 2011, Miyara A., Tsubaki K., Sato N., Fukuda R.
  • CYCLE EVALUATION OF REFRIGERANT MIXTURES OF CO2/DME AND HFC-32/HFO-1234ze(E); 2011/08
    ANNOUNCEMENT INFO.; The 23rd IIR International Congress of Refrigeration, Prague, Czech Republic, 310
    AUTHOR; Onaka Y., Miyara A., Tsubaki K., Koyama S.
  • Numerical simulation of several types of ground heat exchangers in discontinuous operation mode; 2011/07
    ANNOUNCEMENT INFO.; Proceedings of International Conference on Air-Conditioning & Refrigeration 2011, 150-155
    AUTHOR; Jalaluddin, Akio Miyara, Koutaro Tsubaki, Kentaro Yoshida
  • Effect of the shape on the two-phase flow in a distributor; 2011/06
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Numerical simulation of vertical ground heat exchangers for ground source heat pumps; 2011/06
    ANNOUNCEMENT INFO.; 10th IEA Heat Pump Conference 2011
    AUTHOR; Jalaluddin, A. Miyara, K. Tsubaki, K. Yoshida
  • 二相流エジェクタの形状がサイクル性能に与える影響; 2011/04
    ANNOUNCEMENT INFO.; , 33
    AUTHOR; 
  • ANALYSIS OF HEAT PUMP CYCLE USING REFRIGERNAT MIXTURES; 2010/12
    ANNOUNCEMENT INFO.; THE INTERNATIONAL SYMPOSIUM ON NEW REFRIGERANTS AND ENVIRONMENTAL TECHNOLOGY 2010
    AUTHOR; Yoji ONAKA, Akio MIYARA, Koutaro TSUBAKI, Shigeru KOYAMA
  • MEASUREMENT OF THE THERMAL CONDUCTIVITY OF HFO-1234ZE(E)+HFC32 MIXTURE REFRIGERANT; 2010/12
    ANNOUNCEMENT INFO.; THE INTERNATIONAL SYMPOSIUM ON NEW REFRIGERANTS AND ENVIRONMENTAL TECHNOLOGY 2010
    AUTHOR; Koutaro TSUBAKI, Akio MIYARA, Nobuki SATO
  • Flow Pattern and Two Phase Flow Distribution in a Distributor; 2010/12
    ANNOUNCEMENT INFO.; ICCHT2010 - 5th International Conference on Cooling and Heating Technologies. Bandung, Indonesia, 045
    AUTHOR; Azridjal Aziz, Akio Miyara, Koutaro Tsubaki, Fumiaki Sugino
  • 圧縮機オイルがCO2ヒートポンプサイクルに及ぼす影響; 2010/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • CO2ヒートポンプサイクルにおける圧縮機オイル濃度の影響; 2010/09
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Two-phase Flow Distribution of Air Water in A Distributor at Different Inclination; 2010/09
    ANNOUNCEMENT INFO.; 日本冷凍空調学会 年次大会 2010
    AUTHOR; Azridjal Aziz, Akio Miyara, Koutaro Tsubaki, Tomoaki Shigetomi
  • Thermal Performances Of Three Types Of Ground Heat Exchangers In Short-Time Period Of Operation; 2010/07
    ANNOUNCEMENT INFO.; 2010 Purdue Compressor Engineering, Refrigeration and Air Conditioning and High Performance Buildings Conferences
    AUTHOR; Jalaluddin, Jalaluddin; Miyara, Akio; Tsubaki, Koutaro; Inoue, Shuntaro; Yoshida, Kentaro
  • Thermal conductivity of HFO1234ze and HFC32 mixture; 2010/02
    ANNOUNCEMENT INFO.; 2010 International Symposium on Next-generation Air Conditioning and Refrigeration Technology
    AUTHOR; Akio Miyara, Koutaro Tsubaki, Nobuki Sato
  • Analysis of CO2/DME heat pump cycle with consideration of heat transfer degradation; 2009/11
    ANNOUNCEMENT INFO.; Sixth International Conference on Flow Dynamics
    AUTHOR; Yoji Onaka, Akio Miyara, Koutaro Tsubaki, Shigeru Koyama
  • CO2/DME混合冷媒の水平蒸発管内熱伝達に関する実験的研究; 2009/11
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 分流器の傾斜が流動および分配特性に及ぼす影響; 2009/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • HEAT TRANSFER PERFORMANCE OF SEVERAL TYPES OF GROUND HEAT EXCHANGERS; 2009/10
    ANNOUNCEMENT INFO.; 2009 JSRAE Annual Conference
    AUTHOR; Jalaluddin, Shuntaro Inoue, Kentaro Yoshida, Koutaro Tsubaki, Akio Miyara
  • CO2/DME混合冷媒の管内熱伝達に関する研究; 2009/09
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • フィンカラー形状が接触熱抵抗に及ぼす影響; 2009/06
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Numerical Simulation of Contact Condition Effects on Heat Exchanger Performance; 2009/06
    ANNOUNCEMENT INFO.; 3rd Conference on Thermophysical Properties and Transfer Processes of Refrigerants
    AUTHOR; Koutaro Tsubaki, Yoshimi Matsuo, Akio Miyara
  • Flow Observation and Distribution of Two-Phase Flow in a Distributor; 2009/06
    ANNOUNCEMENT INFO.; 3rd Conference on Thermophysical Properties and Transfer Processes of Refrigerants
    AUTHOR; Akio Miyara, Koutaro Tsubaki, Tomoaki Shigetomi, Masaharu Oshima, Ryuuji Kitano
  • Development of Geothermal Heat Exchanger Using a Steel Pile Foundation of Housing; 2009/05
    ANNOUNCEMENT INFO.; ACRA 2009 Taipei
    AUTHOR; Akio MIYARA, Koutaro TSUBAKi, Shuntaro INOUE, Jalaluddin
  • 多管式地中熱交換器の伝熱性能実験; 2009/04
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 水平管内凝縮におけるCO2/DME混合冷媒の圧力損失特性; 2008/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 伝熱管とフィンの接触状態が熱交換器性能に及ぼす影響; 2008/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 地中熱交換器の伝熱特性に関する実験的研究; 2008/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 分流器内気液二相流の流動および分配特性; 2008/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 溝付管内の単相流および気液二相流の圧力損失の予測方法; 2008/09
    ANNOUNCEMENT INFO.; , 5-6
    AUTHOR; 
  • Yoji ONAKA, Akio MIYARA, Koutaro TSUBAKI, Shigeru KOYAMA; 2008/07
    ANNOUNCEMENT INFO.; International Refrigeration and Air Conditioning Conference at Purdue
    AUTHOR; Analysis of Heat Pump Cycle Using CO2 /DME Mixture Refrigerant
  • 地中熱交換器の伝熱性能の評価; 2008/05
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Numerical Simulation of Upwelling Flow in Pipe Generated by Perpetual Salt Fountain; 2007/12
    ANNOUNCEMENT INFO.; 16th Australasian Fluid Mechanics Conference Crown Plaza, Gold Coast, Australia
    AUTHOR; Tetsuya SATO, Shigenao MARUYAMA, Atsuki KOMIYA and Koutaro TSUBAKI
  • 地中熱利用ヒートポンプのための熱交換システムに関する研究; 2007/11
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • EXPERIMENTAL HEAT TRANSFER AND PRESSURE DROP OF CO2/ DME MIXTURE REFRIGERANT INSIDE HORIZONTAL SMOOTH TUBE; 2007/10
    ANNOUNCEMENT INFO.; , B204
    AUTHOR; Hasan M.M. AFROZ , Akio MIYARA, Atshushi BABA, Koutaro TSUBAKI
  • CO2/DME混合冷媒を用いたヒートポンプサイクルの性能解析; 2007/10
    ANNOUNCEMENT INFO.; , B204
    AUTHOR; 
  • 地中熱交換システムの開発; 2007/09
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • A Study on the Effects of Fin Collar Shape on the Heat Transfer Performance of Fin-tube Heat Exchangers; 2007/08
    ANNOUNCEMENT INFO.; The 22nd International Congress of Refrigeration, Beijing, China
    AUTHOR; K. TSUBAKI, A. MIYARA, Y. NAGAI, N. SASAKI, Y. MIZUTA
  • フィンカラーと伝熱管の接触形状が伝熱性能に及ぼす影響; 2007/05
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Two-Phase Flow Behaviour in Herringbone Microfin Tubes; 2007/05
    ANNOUNCEMENT INFO.; 第44回日本伝熱シンポジウム(長崎)
    AUTHOR; Mohammad Ariful Islam, Koutaro Tsubaki, Akio Miyara
  • Prediction of friction factor for single-phase flow inside microfin tubes; 2007/05
    ANNOUNCEMENT INFO.; 第44回日本伝熱シンポジウム(長崎)
    AUTHOR; Hasan M.M. Afroz, Koutaro Tsubaki, Akio Miyara
  • フィンチューブ熱交換器の生産過程の形状変化が伝熱性能に及ぼす影響; 2006/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 永久塩泉による管内自然対流の数値シミュレーション; 2006/05
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Estimation of Upwelling by the Perpetual Salt Fountain for Sea Planting; 2005/04
    ANNOUNCEMENT INFO.; 6th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, (Matsushima, Japan)
    AUTHOR; Koutaro Tsubaki, Shigenao Maruyama, Hiroaki Mitsugashira and Atsuki Komiya
  • Creation of Ocean Forest by Upwelling of Deep Seawater Using Perpetual Salt Fountains; 2004/11
    ANNOUNCEMENT INFO.; Oceans'04/Techno-Ocean'04, (Kobe, Japan)
    AUTHOR; Koutaro Tsubaki, Shigenao Maruyama, Hiroaki Mitsugashira, Xingrong. Zhang and Atsuki Komiya
  • Measurement of Upwelling Flow Velocity Generated by the Perpetual Salt Fountain in the Pacific; 2004/11
    ANNOUNCEMENT INFO.; AFI/TFI 2004 & First International Conference on Flow Dynamics, (Sendai, Japan)
    AUTHOR; Hiroaki Mitsugashira, Koutaro Tsubaki, Shigenao Maruyama and Atsuki Komiya
  • 永久塩泉による化石燃料を使わない海洋深層水の汲み上げ; 2004/10
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Cultivation of Ocean Desert by Upwelling Deep Seawater Using Perpetual Salt Fountains: Laputa Project; 2003/11
    ANNOUNCEMENT INFO.; Third International Symposium on Advanced Fluid Information, New York
    AUTHOR; Shigenao Maruyama, Koutaro Tsubaki, Seigo Sakai, Xinrong Zhang and Keisuke Taira
  • 永久塩泉による深層水湧昇現象の数値解析; 2003/11
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • A Numerixal Study of Upwelling Deep Seawater Using the Perpetual Salt Fountain; 2003/09
    ANNOUNCEMENT INFO.; 2003 Japan-Korea Seminar on Heat Transfer in Micro to Mega Scales, Sendai
    AUTHOR; Xinrong ZHANG, Shigenao MARUYAMA, Seigo SAKAI and Koutaro TSUBAKI
  • 永久塩泉の原理による海洋深層水汲み上げの測定; 2003/05
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • Study on Measurement of Ultra Low Pipe Flow by the Upwelling in the Sea; 2002/08
    ANNOUNCEMENT INFO.; The Third Japan-Korea Seminar on Combustion and Heat Transfer, Matsushima
    AUTHOR; Shigenao Maruyama, Koutaro Tsubaki, Seigo Sakai, Keisuke Taira
  • 海洋での人工湧昇による管内極低速流の計測に関する研究; 2002/04
    ANNOUNCEMENT INFO.; 
    AUTHOR; 
  • 熱塩永久泉の湧昇検証実験; 2001/09
    ANNOUNCEMENT INFO.; , 60-60
    AUTHOR; 

Invited Lecture, Special Lecture

  • Effect of inclination on the two-phase flow in a distributor; 2009/11
    ANNOUNCEMENT INFO.; Sixth International Conference on Flow Dynamics
    AUTHOR; Tsubaki Koutaro, Akio Miyara, Tomoaki Shigetomi


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