Detailed Information

Research Field/Keywords for Research Field

• Thermal Engineering, Ocean Thermal Energy Conversion (OTEC), Organic Rankine Cycle (ORC), Seawater Desalination, Heat Exchangers, Deep seawater, Exergy

Education

• 2003/03, Doshisha University, Engineering, Energy and Mechenical Engineering, Graduated
• 2005/03, Saga University Graduate School, Engineering, Mechanical system, Master Course, Completed
• 2008/03, Saga University Graduate School, Engineering, Energy Material Science, Doctor Course, Completed

Employment Experience

• 2008/04 - 2013/03 Technical Staff Mitsubishi Heavy Industries, Ltd.
• 2013/04 - 2015/03 Senior Engineer Mitsubishi Heavy Industries, Ltd.
• 2015/04 - 2023/03 Assistant Professor, Institute of Ocean Energy, Saga University
• 2023/04 -  *  Associate Professor, Institute of Ocean Energy, Saga University

Field of Specialization

• Thermal engineering, Energy engineering, Design and evaluation of sustainable and environmental conscious system, Fluid engineering, Computational science

Membership in Academic Societies

• Deep Ocean Water Applications Society (DOWAS), The Heat Transfer Society of Japan, The Society of Sea Water Science, Japan, The Japan Society of Mechanical Engineer, The Geothermal Research Society of Japan

Books

• Ocean Thermal Energy Conversion: Technological Readiness and Indonesia Progress;　2023/11
  ANNOUNCEMENT INFO.;　Indonesia's Energy Transition Preparedness Framework Towards 2045, Chapter 2, 23-86
  AUTHOR;　Ristiyanto Adiputra, Rasgianti, Erwandi, Ariyana Dwiputra Nugraha, Navik Puryantini, Takeshi Yasunaga
  
• Carnot Cycle and Heat Engine Fundamentals and Applications Chapter title: OTEC Maximum Net Power Output Using Carnot Cycle and Application to Simplify Heat Exchanger Selection;　2020/07
  ANNOUNCEMENT INFO.;　(Reprinted from Entropy, 2019, 21, p.1232), 75-94
  AUTHOR;　Kevin Fontaine; Takeshi Yasunaga; Yasuyuki Ikegami
  
• 造水技術ハンドブック<追補版>;　2014/04
  ANNOUNCEMENT INFO.;　, 93-95
  AUTHOR;　
  

Original Articles

• Basic Design Optimization of Power and Desalinated Water for Hybrid Cycle Ocean Thermal Energy Conversion System Integrated with Desalination Plant;　2024/02
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Technology, online
  AUTHOR;　A. A. Azmi, T. Yasunaga, K. Fontaine, T. Morisaki, T. Nakaoka, S. T. Thirugnana, A.B. Jaafar, Y. Ikegami
  
• Internal flow effects in OTEC cold water pipe: Finite element modelling in frequency and time domain approaches;　2023/11
  ANNOUNCEMENT INFO.;　Ocean Engineering, 288, 116056
  AUTHOR;　Muhammad Iqbal Habib, Ristiyanto Adiputra, Aditya Rio Prabowo, Erwandi Erwandi, Nurul Muhayat, Takeshi Yasunaga, S¨oren Ehlers, Moritz Braun
  
• Experimental Study of Small Scale Hybrid Hot Spring Thermal Energy Conversion;　2023/05
  ANNOUNCEMENT INFO.;　Transitions of the JSME (in Japanese), 89, 921, 00264
  AUTHOR;　Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Spatial structures of rf ring-shaped magnetized sputtering plasmas with two facing cylindrical ZnO/Al2O3 targets;　2023/04
  ANNOUNCEMENT INFO.;　Japanese Journal of Applied Physics, 62, SI1007
  AUTHOR;　Yasunori Ohtsu, Kousuke Hara, Shoma Imoto, Julian Schulze, Takeshi Yasunaga, and Yasuyuki Ikegami
  
• Performance Analysis of a 10 MW Ocean Thermal Energy Conversion Plant Using Rankine Cycle in Malaysia;　2023/02
  ANNOUNCEMENT INFO.;　Sustainability, 15, 4, 3777
  AUTHOR;　Sathiabama T. Thirugnana, Abu Bakar Jaafar, Srithar Rajoo, Ahmad Aiman Azmi, Hariharan Jai Karthikeyan, Takeshi Yasunaga, Tsutomu Nakaoka, Hesam Kamyab, Shreeshivadasan Chelliapan, Yasuyuki Ikegami
  
• Construction of state-space model with multiple flow rate inputs for an OTEC plant using Rankine cycle;　2022/06
  ANNOUNCEMENT INFO.;　SICE Journal of Control, Measurement, and System Integration, 15, 2, 89-98
  AUTHOR;　Matsuda, Y., Suyama, D., Sugi, T., Goto S, Morisaki, T., Yasunaga, T., Ikegami, Y.
  
• Spatial profile of Al-ZnO thin film on polycarbonate deposited by ring-shaped magnetized rf plasma sputtering with two facing cylindrical Al2O3 - ZnO targets;　2022/01
  ANNOUNCEMENT INFO.;　Japanese Journal of Applied Physics, 61, SI1005
  AUTHOR;　Yasunori Ohtsu, Godai Sakata, Julian Schulze, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Oceanic Observation and Investigation for Ocean Thermal Energy Conversion and Deep Ocean Water Use in Coast of Kemejima Island;　2021/12
  ANNOUNCEMENT INFO.;　Deep Ocean Water Research, 22, 2, 39-47
  AUTHOR;　Urata, K., Yasunaga, T., Ikegami, Y., Omi, S., Fukami, K., Tanaka, T., Kawano, T., Ishida, M,. Ohara, J., Nishida, T., Nakaoka, T.
  
• Preparation of Water‑Repellent Film on a Plastic Plate by Unbalanced Radio‑Frequency Magnetron Plasma Sputtering Using PTFE Target for a Next‑Generation Automobile Window;　2021/09
  ANNOUNCEMENT INFO.;　Plasma Chemistry and Plasma Processing
  AUTHOR;　Yasunori Ohtsu, Yuta Ino, Yuki Fujio, Tatsuo Tabaru, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Performance evaluation concept in ocean thermal energy conversion towards standardization and intelligent design;　2021/04
  ANNOUNCEMENT INFO.;　Energies, 14, 8, 2336
  AUTHOR;　Takeshi Yasunaga, Kevin Fontaine, Yasuyuki Ikegami
  
• Estimation of Ocean Thermal Energy Conversion Resources in the East of Malaysia;　2021/01
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 9, 1, 22
  AUTHOR;　Sathiabama T. Thirugnana, Abu Bakar Jaafar, Takeshi Yasunaga, Tsutomu Nakaoka, Yasuyuki Ikegami, Suriyanti Su
  
• Fundamental characteristics in power generation by heat engines on ocean thermal energy conversion (Construction of finite-time thermodynamic model and effect of heat source flow rate);　2020/06
  ANNOUNCEMENT INFO.;　Transactions of the JSME, 86, 886
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• Parametric analysis on hybrid ocean thermal energy conversion system;　2020/03
  ANNOUNCEMENT INFO.;　Transactions of the JSME, 86, 883, 19-00370
  AUTHOR;　Yasuyuki IKEGAMI, Takeshi YASUNAGA, Natsuki KOYAMA, Tomoya OKUNO
  
• A Numerical Investigation of the Plunging Phenomenon of Cold Water Discharged from Ocean Thermal Energy Conversion Systems;　2020/02
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 8, 3, 155
  AUTHOR;　Dan Hua,Takeshi Yasunaga, Yasuyuki Ikegami
  
• Finite-Time Thermodynamic Model for Evaluating Heat Engines in Ocean Thermal Energy Conversion;　2020/02
  ANNOUNCEMENT INFO.;　Entropy, 22, 2, 211
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• OTEC Maximum Net Power Output Using Carnot Cycle and Application to Simplify Heat Exchanger Selection;　2019/11
  ANNOUNCEMENT INFO.;　Entropy, 21, 12, 1143
  AUTHOR;　Kevin Fontaine, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Preliminary design of a 100 MW-net ocean thermal energy conversion (OTEC) power plant study case: Mentawai island, Indonesia;　2019/02
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Technology, 1-21
  AUTHOR;　Ristiyanto Adiputra, Tomoaki Utsunomiya, Jaswar Koto, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Water Level Control of After Condenser in a Spray Flash Desalination System Using Stochastic Process;　2019/01
  ANNOUNCEMENT INFO.;　Transactions of the Institute of Systems, Control and Information Engineers, 32, 1, 24-31
  AUTHOR;　Yoshitaka Matsuda, Yoshihiro Eishima, Satoru Goto, Takenao Sugi,Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Basic Heat Exchanger Performance Evaluation Method on OTEC;　2018/04
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 6, 2, 32
  AUTHOR;　Takeshi Yasunaga, Takafumi Noguchi, Takafumi Morisaki and Yasuyuki Ikegami
  
• Ocean Thermal Energy Conversion Using Double-Stage Rankine Cycle;　2018/03
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 6, 1, 21
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga and Takafumi Morisaki
  
• Study of available thermal energy on OTEC;　2018/03
  ANNOUNCEMENT INFO.;　Transactions of the JSME (in Japanese), 84, 859, 17 - 00398-17-00398
  AUTHOR;　YASUNAGA Takeshi;MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Construction of a Static Model for Power Generation of OTEC Plant Using Uehara Cycle Based on Experimental Data;　2018/02
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 6, 1, 18
  AUTHOR;　Yoshitaka Matsuda, Takuma Yoshitake, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• SEAWATER FLOW RATE REGULATION OF OTEC PLANT USING UEHARA CYCLE BY CONSIDERING WARM SEAWATER TEMPERATURE VARIATION;　2017/11
  ANNOUNCEMENT INFO.;　International Journal of Innovative Computing, Information and Control, 13, 6, 2123–2131
  AUTHOR;　Yoshitaka Matsuda, Daiki Urayoshi, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Construction of OTEC Potential Model Based on Cycle Analysis;　2017/08
  ANNOUNCEMENT INFO.;　, 30, 8, 297-304
  AUTHOR;　
  
• Web Application for OTEC Simulator Using Double-stage Rankine Cycle;　2017/07
  ANNOUNCEMENT INFO.;　IFAC-Papers OnLine, 50, 1, 121-128
  AUTHOR;　Satoru Goto, Yoshitaka Matsuda, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami, Naruto Egashira
  
• Liquid Level Control of Separator in an OTEC Plant with Uehara Cycle;　2016/12
  ANNOUNCEMENT INFO.;　Trans of the institute system, control and Information Engineer, 29, 12, 353-543
  AUTHOR;　Yoshitaka Matsuda, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Construction of Simulation Model for OTEC Plant Using Uehara Cycle;　2011/02
  ANNOUNCEMENT INFO.;　Electrical Engineering in Japan, 176, 2
  AUTHOR;　SATORU GOTO, YOSHIKI MOTOSHIMA, TAKENAO SUGI, TAKESHI YASUNAGA, YASUYUKI IKEGAMI, MASATOSHI NAKAMURA
  
• Construction of Simulation Model for Spray Flash Desalination System;　2010/03
  ANNOUNCEMENT INFO.;　Electrical Engineering in Japan, 170, 4, 993-999
  AUTHOR;　SATORU GOTO, YUJI YAMAMOTO, TAKENAO SUGI, TAKESHI YASUNAGA, YASUYUKI IKEGAMI, MASATOSHI NAKAMURA
  
• Construction of Simulation Model for OTEC Plant Using Uehara Cycle;　2009/02
  ANNOUNCEMENT INFO.;　, 129, 2, 272282
  AUTHOR;　GOTO Satoru;MOTOSHIMA Yoshiki;SUGI Takenao;YASUNAGA Takeshi;IKEGAMI Yasuyuki;NAKAMURA Masatoshi
  
• Construction of Simulation Model for Spray Flash Desalination System;　2008/08
  ANNOUNCEMENT INFO.;　, 128, 8, 993999
  AUTHOR;　GOTO Satoru;YAMAMOTO Yuji;SUGI Takenao;YASUNAGA Takeshi;IKEGAMI Yasuyuki;NAKAMURA Masatoshi
  
• A Simulation Model of Spray Flash Desalination System;　2008/07
  ANNOUNCEMENT INFO.;　IFAC Proceedings Volumes, 41, 2, 15909-15914
  AUTHOR;　Satoru Goto,Yuji Yamamoto,Takenao Sugi, Takeshi Yasunaga, Yasuyuki Ikegami, Masatoshi Nakamura
  
• Performance Test of OTEC with Ammonia/water as Working Fluid Using Shell and Plate Type Heat Exchangers : Effects of Heat Source Temperature and Flow Rate(Thermal Engineering);　2008/02
  ANNOUNCEMENT INFO.;　, 74, 738, 445452
  AUTHOR;　YASUNAGA Takeshi;IKEGAMI Yasuyuki;MONDE Masanori
  
• Performance Evaluation of Benchmark Plant for Selective Lithium Recovery from Seawater;　2007/10
  ANNOUNCEMENT INFO.;　Journal of Ion Exchange, 18, 4, 450-453
  AUTHOR;　Kazuharu Yoshizuka, Marek Holba, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Optimum Mass Fraction of Working Fluid for OTEC Using the Uehara Cycle;　2006/02
  ANNOUNCEMENT INFO.;　, 60, 1, 3946
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;HARADA Hidemitsu
  
• Performance Experiments on Ocean Thermal Energy Conversion System Using the Uehara Cycle;　2006/02
  ANNOUNCEMENT INFO.;　, 60, 1, 3238
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;HARADA Hidemitsu
  

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

• Fundamental power generation characteristics of ocean thermal energy system and the applications of deep sea water;　2024/03
  ANNOUNCEMENT INFO.;　Bulletin of the Society of Sea Water Science, Japan, 78, 1, In Press
  AUTHOR;　Takeshi Yasunaga
  
• Geometry optimization on herringbone plate heat exchangers for low-enthalpy heat energy conversion (Consideration of the performance of heat source heat transfer and pressure drop);　2024/02
  ANNOUNCEMENT INFO.;　OTEC, 28, In Press
  AUTHOR;　Takeshi YASUNAGA, Kevin FONTAINE, Yasunori OHTSU, Yasuyuki IKEGAMI, Sathiabama T. Thirugnana, and Abu Bakakar Jaafar
  
• Development status and problems on ocean energy;　2023/08
  ANNOUNCEMENT INFO.;　AKUANETTO, 26, 8, 40-46
  AUTHOR;　Takeshi Yasunaga
  
• Oceanographic Survey for Installation of OTEC Plant in Kumejima (Assessment of seawater temperature, salinity, and dissolved oxygen from 2016-2022);　2023/03
  ANNOUNCEMENT INFO.;　OTEC, 27, 35-57
  AUTHOR;　Hideyuki Yoshimura, Junichi OHARA, Tetsuya NISHIDA, Junji KOGA, Tatsuhiko TANAKA, Kiyohiko FUKAMI, Tsuyoshi IHARA, Heita OKAMOTO, Kimihiko NAKAMURA, Takahiro UEDA, Hisateru NAKATSUKA, Ryosuke SAKAKI, Kousuke YAMAMOTO, Naoki HIROSE, Takeshi YASUNAGA, Takahumi MORISAKI, Kazuya URATA, Shin HIRAYAMA and Yasuyuki IKEGAMI
  
• Extracting energy from seawater: A thermodynamic dilemma;　2022/09
  ANNOUNCEMENT INFO.;　Research Features, 143, 30-33
  AUTHOR;　Takeshi Yasunaga
  
• Development of Hybrid Ocean Thermal Energy Conversion;　2022/07
  ANNOUNCEMENT INFO.;　Journal of Society of Automotive of Engineer of Japan, 76, 7, 106-112
  AUTHOR;　Yasunaga, T., Morisaki, T., Ikegami, Y.
  
• Heat Transfer Performance Test Results of A Plate Evaporator-Condenser for Hybrid Ocean Thermal Energy Conversion;　2022/02
  ANNOUNCEMENT INFO.;　OTEC, 26, 43-47
  AUTHOR;　Shuji MIYAZONO, Takeshi YASUNAGA, Taisei NAKAMURA, Yasuyuki IKEGAMI, Takafumi MORISAKI
  
• Proposal of Performance Evaluation Method of Heat Exchanger for Ocean Thermal Energy Conversion Based on Thermodynamics Perspective;　2022/02
  ANNOUNCEMENT INFO.;　OTEC, 26, 19-24
  AUTHOR;　Akira MIYAZAKI,Takeshi YASUNAGA, Kevin Fontaine and Yasuyuki IKEGAMI
  
• Flow Visualization And Void Fraction Measurement via Image Processing Using Transparent Resin Evaporator;　2022/02
  ANNOUNCEMENT INFO.;　OTEC, 26, 13-18
  AUTHOR;　Masashi NAKAYAMA, Takeshi YASUNAGA, Takafumi MORISAKI, Yasunori OHTSU and Yasuyuki IKEGAMI
  
• Performance evaluation of the ocean thermal energy conversion system using cross-flow plate type heat exchangers;　2020/12
  ANNOUNCEMENT INFO.;　OTEC, 25, 69-74
  AUTHOR;　Takeshi Yasunaga, Taisei Nakamura, Tomoya Okuno, Yasuyuki Ikegami
  
• Parameter Analysis on OTEC using Hybrid Cycle;　2019/09
  ANNOUNCEMENT INFO.;　OTEC, 24, 41-46
  AUTHOR;　Yasuyuki IKEGAMI, Takeshi YASUNAGA, Tomoya OKUNO
  
• The Optimum Design on Ocean Thermal Energy Conversion;　2019/02
  ANNOUNCEMENT INFO.;　Bulletin of the Society of Water Science, Japan, 73, 9-13
  AUTHOR;　
  
• Performance Evaluation of Heat Exchangers for Application to Ocean Thermal Energy Conversion System;　2017/09
  ANNOUNCEMENT INFO.;　, 22, 65-75
  AUTHOR;　Takeshi YASUNAGA, Kevin FONTAINE, Takafumi MORISAKI and Yasuyuki IKEGAMI
  
• 海洋温度差発電システムの性能評価手法の検討;　2017/09
  ANNOUNCEMENT INFO.;　, 22, 37-46
  AUTHOR;　
  
• Performance Evaluation Method of Ocean Thermal Energy Conversion System;　2017
  ANNOUNCEMENT INFO.;　, 22, 37 - 46
  AUTHOR;　
  
• Oceanic Observation and Investigation for Compound use of OTEC in Kumejima;　2016/10
  ANNOUNCEMENT INFO.;　, 21, 26-34
  AUTHOR;　
  
• Potential Evaluation of Ocean Thermal Energy Conversion;　2015/07
  ANNOUNCEMENT INFO.;　, 20, 2131
  AUTHOR;　
  
• Performance Test of 30kW OTEC System Using Ammonia/water as Working Fluid: Effects of Heat Source Temperature and Flow Rate;　2008/03
  ANNOUNCEMENT INFO.;　, 13, 8794
  AUTHOR;　Yasunaga Takeshi;Ikegami Yasuyuki;Monde Masanori
  
• Performance Test of 30kW OTEC System Using Ammonia/water as Working Fluid: Effects of Composition of Ammonia/water Mixture;　2008/03
  ANNOUNCEMENT INFO.;　, 13, 95102
  AUTHOR;　Yasunaga Takeshi;Ikegami Yasuyuki;Asou Hiroyuki;Monde Masanori
  

General Lectures

• Construction of a State Space Model for a Spray Flash Desalination System with Valve Dynamics;　2022/09
  ANNOUNCEMENT INFO.;　Proceedings of SICE Annual Conference 2022, 448-453
  AUTHOR;　Yoshitaka Matsuda, Ayato Ehara, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Development of remote operation system for sea water valves of a spray flash desalination plant;　2022/08
  ANNOUNCEMENT INFO.;　2022 Annual Conference of Electronics, Information, and Systems Society, I.E.E. of Japan, GS1-2, 978-981
  AUTHOR;　Matsuo, Y., Matsuda, Y., Sugi, T., Goto, S., Morisaki, T.,Yasunaga, T., Ikegami, Y., Egashira, N.
  
• COMPONENTS IN CLOSED CYCLE OTEC SYSTEM: A REVIEW;　2022/07
  ANNOUNCEMENT INFO.;　Proceedings of 18th International Conference on Clean Energy
  AUTHOR;　Karthikeyan, H. J., Thirugnana, S.T., Chelliapan, S., Yasunaga, T., Ikegami, Y.
  
• AN ASSESSMENT ON TECHNICAL CHALLENGES OF HEAT EXCHANGER IN HYBRID OTEC;　2022/07
  ANNOUNCEMENT INFO.;　Proceedings of 18th International Conference on Clean Energy
  AUTHOR;　Azmi, A. A., Yasunaga, T., Ikegami, Y., Fontaine, K., Thirugnana, S. T., Jaafar, A. B.
  
• Power Generation Control of OTEC Plant Using Hybrid Cycle by Warm Seawater Flow Rate Regulation;　2022/05
  ANNOUNCEMENT INFO.;　roceedings of the 66th Annual Conference of the Institute of Systems, Control and Information Engineers (ISCIE), 114, 1, 80-84
  AUTHOR;　Izutsu, R., Matsuda, Y., Sugi, T., Goto, S., Morisaki, T., Yasunaga, T., Ikegami, Y.
  
• OTEC and Advanced Deep Ocean Water Use for Kumejima: An Introduction;　2022/05
  ANNOUNCEMENT INFO.;　Proceedings of OCEANS 2022 –Chennai
  AUTHOR;　Martine, B., Okamura, S., Yasunaga, T., Ikegami, Y., Ohta, N.
  
• Comprehensive heat exchanger perforamance evaluation method on ocean thermal energy conversion for maximum net power;　2021/10
  ANNOUNCEMENT INFO.;　Proc. 6th Int. Seminar ORC Power Systems, 48
  AUTHOR;　Yasunaga, T., Miyazaki, A., Fontaine, K., Ikegami, Y.
  
• Exergetic performance evaluation of ocean thermal energy conversion system with crossflow plate heat exchangers;　2021/10
  ANNOUNCEMENT INFO.;　Proc. 6th Int. Seminar ORC Power Systems, 87
  AUTHOR;　Yasunaga, T., Nakamura, T., Okuno, T., Ikegami, Y.
  
• Construction of a Dynamic Model for an OTEC Plant Using Hybrid Cycle Based on a Simple Dynamic Model;　2021/09
  ANNOUNCEMENT INFO.;　Proceedings of SICE Annual Conference 2021, 180-183
  AUTHOR;　Yoshitaka Matsuda, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Construction of a State Space Model with Working Fluid Flow Rate Input for an OTEC Plant Using Rankine Cycle;　2021/09
  ANNOUNCEMENT INFO.;　Proceedings of SICE Annual Conference 2021, 176-179
  AUTHOR;　Yoshitaka Matsuda, Daiki Suyama, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Void Fraction Measurement of Transparent Resin Evaporation via Image Processing Bubble Flow Motion in Low Void Fraction Range;　2021/09
  ANNOUNCEMENT INFO.;　, No.21-35
  AUTHOR;　Takeshi Yasunaga, Masashi Nakayama, Takahumi Morisaki, Kiwamu Sasaki, Yasuyuki Ikegami
  
• Proposal of Performance Evaluation Index of Heat Exchanger for Ocean Thermal Energy Conversion based on Finite-time Thermodynamics;　2021/07
  ANNOUNCEMENT INFO.;　Proceedings of the 25th National Symposium on Power and Energy Systems, C133
  AUTHOR;　Takeshi YASUNAGA, Akira MIYAZAKI, Kevin FONTAINE, Yasuyuki IKEGAMI
  
• Heat transfer performance evaluation of an evaporator-condenser for hybrid cycle OTEC;　2021/07
  ANNOUNCEMENT INFO.;　Proceedings of the 25th National Symposium on Power and Energy Systems, C132
  AUTHOR;　Yasuyuki IKEGAMI, Takeshi YASUNAGA, Tomoya OKUNO, Taisei NAKAMURA, Shuji MIYAZONO, Takahumi MORISAKI
  
• Ocean Thermal Energy-Driven Development for Sustainability;　2021/04
  ANNOUNCEMENT INFO.;　Proceedings of 9th International Conference on Applied Science and Technology (ICAST) 2021
  AUTHOR;　A. Bakar Jaafar, Mohd Khairi Abu Husain, Sathiabama T. Thirugnana, Syuhaida Ismail, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Thermodynamics for the Standardization of Performance Evaluation on OTEC;　2021/01
  ANNOUNCEMENT INFO.;　8th International OTEC Symposium
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• Estimation of Ocean Thermal Energy Conversion Resources in Sabah, Malaysia;　2021/01
  ANNOUNCEMENT INFO.;　8th International OTEC Symposium
  AUTHOR;　Sathiabama T. Thirugnana, Abu Bakar Jaafar, Takeshi Yasunaga, Tsutomu Nakaoka, Suriyanti Su, Yasuyuki Ikegami
  
• Novel, enhanced thermal conductivity heat exchanger for OTEC;　2021/01
  ANNOUNCEMENT INFO.;　8th International OTEC Symposium
  AUTHOR;　Meng Soon Chiong, Feng Xian Tan, Srithar Rajoo, Sathiabama T. Thirugnana, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Simplification of Heat Exchanger Selection for OTEC Using Carnot Cycle Based Maximum Power Output Assessment;　2021/01
  ANNOUNCEMENT INFO.;　8th International OTEC Symposium
  AUTHOR;　Fontaine Kevin, Takeshi Yasunaga, Yasuyuki Ikegami
  
• マレーシア海域での海洋熱エネルギ量の推算;　2020/10
  ANNOUNCEMENT INFO.;　Deep Ocean Water Research, 21, 1, 9
  AUTHOR;　
  
• ハイブリッドサイクルを用いた海洋温度差発電の性能特性;　2020/10
  ANNOUNCEMENT INFO.;　Deep Ocean Water Research, 21, 1, 10
  AUTHOR;　
  
• Fundamental Characteristics of Power Output on Ocean Thermal Energy Conversion System Using Cross-flow Heat Exchangers;　2020/10
  ANNOUNCEMENT INFO.;　Thermal Engineering Conference 2020, D222
  AUTHOR;　Takeshi Yasunaga, Taisei Nakamura, Tomoya Okuno, Yasuyuki Ikegami
  
• Parametric Analysis on Novel Self-water Supply ORC Power System for Hot-Spring Thermal Energy Conversion;　2020/10
  ANNOUNCEMENT INFO.;　Thermal Engineering Conference 2020, D221
  AUTHOR;　Tomoya Okuno, Takeshi Yasunaga, Yasuyuki Ikegami
  
• アンバランスマグネトロンスパッタ装置の構築と ポリカーボネート板への PTFE 撥水性薄膜合成;　2020/09
  ANNOUNCEMENT INFO.;　, 8a-Z04-15
  AUTHOR;　
  
• Construction of a State Space Model with Warm and Cold Seawater Flow Rate Inputs for an OTEC Plant Using Rankine Cycle;　2020/09
  ANNOUNCEMENT INFO.;　Proceedings of SICE Annual Conference 2020, 1856-1861
  AUTHOR;　Yoshitaka Matsuda, Daiki Suyama, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
  
• スプレーフラッシュ蒸発式海水淡水化実験プラントの遠隔地からの監視実験;　2020/09
  ANNOUNCEMENT INFO.;　, 06-1A-05, 67
  AUTHOR;　
  
• Construction of a State Space Model for a Spray Flash Desalination System;　2020/08
  ANNOUNCEMENT INFO.;　Proceedings of 4th IEEE Conference on Control Technology and Applications, 922-927
  AUTHOR;　Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Parametric Analysis of Novel Self-water Supply ORC Power System for Hot Spring Thermal Energy Conversion;　2020/07
  ANNOUNCEMENT INFO.;　Proc. IIR Rankine 2020 Conference, 1184
  AUTHOR;　Takeshi YASUNAGA, Tomoya OKUNO, Yasuyuki IKEGAMI
  
• Theoretical Model Construction for Renewable Low-grade Thermal Energy Conversion: An Insight from Finite-time Thermodynamics;　2020/07
  ANNOUNCEMENT INFO.;　Proc. IIR Rankine 2020 Conference, 1185
  AUTHOR;　Takeshi YASUNAGA, Yasuyuki IKEGAMI
  
• Construction of a State Space Model for an OTEC Plant Using Rankine Cycle with Heat Flow Rate Dynamics;　2020/07
  ANNOUNCEMENT INFO.;　Preprints of the 21st IFAC World Congress, 2020, 13225-13230
  AUTHOR;　Yoshitaka Matsuda, Daiki Suyama, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Control System for Water Level Control of Flash Chamber in a Spray Flash Desalination System via Stochastic Processes;　2020/07
  ANNOUNCEMENT INFO.;　Proceedings of the 51st ISCIE International Symposium on Stochastic Systems Theory and Its Applications, 7-12
  AUTHOR;　Matsuda, Y., Saki, R., Sugi, T., Goto S, Yasunaga, T., Ikegami, Y.
  
• Construction of a State Space Model with Cold Seawater Flow Rate Input for an OTEC Plant Using Rankine Cycle;　2020/05
  ANNOUNCEMENT INFO.;　The 64th Annual Conference of the Institute of Systems, Control and Information Engineers (ISCIE), GS08-1, 356-360
  AUTHOR;　Daiki Suyama, Yoshitaka Matsuda, Takenao Sugi, Satoru Goto, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Power Generation Control of OTEC Plant Using Rankine Cycle Based on a Simple Dynamic Model with Time Delay;　2020/03
  ANNOUNCEMENT INFO.;　7th Multi-symposium on Control Systems
  AUTHOR;　Yoshitaka Matsuda, Yuya Aosaki, Takenao Sugi, Satoru Goto, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Control System for Water Level Control of Flash Chamber in a Spray Flash Desalination System via Stochastic Processes;　2019/11
  ANNOUNCEMENT INFO.;　Extended Abstract of the 51st ISCIE International Symposium on Stochastic Systems Theory and Its Applications, 19-20
  AUTHOR;　Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Power Generation Control of OTEC Plant Using Double-stage Rankine Cycle based on a Simple Dynamic Model with Flow Rate Dynamics;　2019/11
  ANNOUNCEMENT INFO.;　Proc. 38th symposium of the society of instrument and control engineers Kyushu branch, 49-52
  AUTHOR;　Riku Oouchida, Yoshitaka Matsuda, Takenao Sugi, Satoru Goto, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Water Level Control of Flash Chamber in a Spray Flash Desalination System with Valve Dynamics and Flow Rate Limitation;　2019/10
  ANNOUNCEMENT INFO.;　Proceedings of 2019 19th International Conference on Control, Automation and Systems (ICCAS 2019), 879-884
  AUTHOR;　Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
  
• OTEC Demonstration Project Using Technologies of Advanced cycles and heat exchangers in Japan;　2019/10
  ANNOUNCEMENT INFO.;　7th International OTEC Symposium in Busan, Korea
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga
  
• Standardization of OTEC Potential and Performance Evaluation Analysis Method;　2019/10
  ANNOUNCEMENT INFO.;　7th International OTEC Symposium in Busan, Korea
  AUTHOR;　Takeshi Yasunaga, Ikegami Yasuyuki
  
• Power Generation Control of OTEC Plant Using Double-stage Rankine Cycle with Target Power Output Variation by Simultaneous Regulation of Multiple Flow Rates;　2019/09
  ANNOUNCEMENT INFO.;　Proceedings of SICE Annual Conference 2019, 1412-1417
  AUTHOR;　Yoshitaka Matsuda, Riku Oouchida, Takenao Sugi, Satoru Goto, Takeshi Yasunaga and Yasuyuki Ikegami
  
• IRREVERSIBILITY IN THE ORGANIC RANKINE CYCLE FOR LOW-GRADE THERMAL ENERGY CONVERSION SYSTEM;　2019/09
  ANNOUNCEMENT INFO.;　Proceedings of 5th International Seminar on ORC Power Systems, 162
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• The Blue Innovation Using OTEC: Evaluation of Advanced OTEC System in Kumejima, Okinawa;　2019/06
  ANNOUNCEMENT INFO.;　The 3rd South China Sea
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga
  
• Hybrid OTEC System - Test Rig off Port Dickson, Malaysia;　2019/06
  ANNOUNCEMENT INFO.;　The 3rd South China Sea
  AUTHOR;　Sathiabama T. Thirugnana, A Bakar Jaafar, Takeshi Yasunaga, Yasuyuki Ikegami, Tsutomu Nakaoka
  
• Power and Water Supply Balance on Hybrid OTEC System;　2019/06
  ANNOUNCEMENT INFO.;　The 3rd South China Sea Conference
  AUTHOR;　Takeshi Yasunaga, Tomoya Okuno, Yasuyuki Ikegami, Tsutomu Nakaoka, Sathiabama T. Thurugunana, Bakar Jaafar
  
• Characteristics of Net Power in Ocean Thermal Energy Conversion System Considering Heat Engine Irreversibility;　2019/06
  ANNOUNCEMENT INFO.;　The 24th National Symposium on Power and Energy Systems, C225
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• Performance Evaluation Using FTT on Organic Rankine Cycle Hot Spring Binary Power Generation;　2019/06
  ANNOUNCEMENT INFO.;　The 24th National Symposium on Power and Energy Systems, C222
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• Parametric Analysis on Hybrid Ocean Thermal Energy Conversion System;　2019/06
  ANNOUNCEMENT INFO.;　The 24th National Symposium on Power and Energy Systems, C223
  AUTHOR;　Yasuyuki IKEGAMI, Takeshi YASUNAGA, Natsuki KOYAMA, Tomoya OKUNO
  
• 2段ランキンサイクルを用いた海洋温度差発電プラントのむだ時間を考慮した簡易動的モデルにおける海水流量変化の影響;　2019/03
  ANNOUNCEMENT INFO.;　, 3B2-6
  AUTHOR;　
  
• 2段ランキンサイクルを用いた海洋温度差発電プラントの作動流体ポンプの動特性を考慮した簡易動的モデルの構築;　2019/03
  ANNOUNCEMENT INFO.;　, 3B2-5
  AUTHOR;　
  
• Performance evaluation of high pressure resistance inner-fin plate type heat exchanger;　2019/03
  ANNOUNCEMENT INFO.;　, 622
  AUTHOR;　Daithi YAYAMA, Kiwamu SASAKI, Takeshi YASUNAGA, Yasuyuki IKEGAMI
  
• Parametric Analysis on Hybrid Ocean Thermal Energy Conversion System;　2019/03
  ANNOUNCEMENT INFO.;　, 620
  AUTHOR;　Tomoya Okuno, Natsuki Koyama, Takeshi Yasunaga, Yasuyuki Ikegami
  
• 2段ランキンサイクルを用いた海洋温度差発電プラント実時間遠隔操作のためのWebアプリケーション開発;　2018/11
  ANNOUNCEMENT INFO.;　, 3C4
  AUTHOR;　
  
• ランキンサイクルを用いた海洋温度差発電プラントの気液分離器を考慮した動的モデルの構築;　2018/11
  ANNOUNCEMENT INFO.;　, 102B2
  AUTHOR;　
  
• ランキンサイクルを用いた海洋温度差発電プラントの気液分離器を考慮した動的モデルの構築;　2018/11
  ANNOUNCEMENT INFO.;　, 104A9
  AUTHOR;　
  
• Exergy Distraction in Heat Transfer on Low-grade Thermal Energy Conversion (LTEC) System: A Case of Plate Type Heat Exchangers;　2018/10
  ANNOUNCEMENT INFO.;　5th International Conference, Low Temperature and Waste Heat Use in Energy Supply Systems
  AUTHOR;　Takeshi Yasunaga and Yasuyuki Ikegami
  
• Anti-windup Compensation for Water Level Control of a Spray Flash Desalination System with Flow Rate Limitations;　2018/09
  ANNOUNCEMENT INFO.;　Proc. 2nd IEEE Conference on Control Technology and Applications, 1363-1368
  AUTHOR;　Yoshitaka Matsuda, Ryoichi Sakai, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Simultaneous Regulation of Multiple Flow Rates for Power Generation Control of OTEC Plant Using Double-stage Rankine Cycle;　2018/09
  ANNOUNCEMENT INFO.;　Proc. SICE Annual Conference 2018, 983-988
  AUTHOR;　Yoshitaka Matsuda, Riku Oouchida, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• 2段ランキンサイクルを用いた海洋温度差発電プラントのむだ時間を考慮した動的モデルの構築;　2018/09
  ANNOUNCEMENT INFO.;　, 03-2A-08, 299
  AUTHOR;　
  
• スプレーフラッシュ蒸発式海水淡水化システムの真空ポンプを考慮したシミュレーションモデルの改良;　2018/09
  ANNOUNCEMENT INFO.;　, 03-2A-07, 298
  AUTHOR;　
  
• 2段ランキンサイクルを用いた海洋温度差発電プラントの温海水温度の変動を考慮した発電量制御の改善;　2018/09
  ANNOUNCEMENT INFO.;　, 03-2A-09, 300
  AUTHOR;　
  
• Current Status of Web-based Simulator and Control System for OTEC Plant Using Double-stage Rankine Cycle;　2018/09
  ANNOUNCEMENT INFO.;　6th International OTEC Symposium, IOS6-09
  AUTHOR;　Yoshitaka Matsuda, Takenao Sugi, Satoru Goto, Takeshi Yasunaga, Yasuyuki Ikegami and Naruto Egashira
  
• Hybrid OTEC System – The First Experimental Test Rig in Malaysia;　2018/09
  ANNOUNCEMENT INFO.;　The 6th International OTEC symposium
  AUTHOR;　Sathiabama T. Thirugnanaa, A Bakar Jaafara, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Performance Evaluation of the Plate Type Heat Exchanger for OTEC;　2018/09
  ANNOUNCEMENT INFO.;　The 6th International OTEC Symposium
  AUTHOR;　Natsuki KOYAMA, Takeshi YASUNAGA, Takafumi NOGUCHI, Takafumi MORISAKI and Yasuyuki IKEGAMI
  
• The Visualization of Plate Heat Exchangers for Ocean Thermal Energy Conversion;　2018/09
  ANNOUNCEMENT INFO.;　The 6th International OTEC Symposium
  AUTHOR;　Kiwamu SASAKI, Takeshi YASUNAGA, Takahumi MORISAKI and Yasuyuki IKEGAMI
  
• Advanced cycles and heat exchangers on OTEC Technology;　2018/09
  ANNOUNCEMENT INFO.;　The 6th International OTEC Symposium
  AUTHOR;　Yasuyuki Ikegami and Takeshi Yasunaga
  
• Application of Finite-time Thermodynamics to Simplifying Heat Exchanger Performance Evaluation Method on OTEC;　2018/09
  ANNOUNCEMENT INFO.;　The 6th International OTEC Symposium
  AUTHOR;　Takeshi Yasunaga and Yasuyuki Ikegami
  
• 2段ランキンサイクルを用いた海洋温度差発電プラントシミュレータの遠隔制御;　2018/06
  ANNOUNCEMENT INFO.;　, E122
  AUTHOR;　
  
• Estimation of thermal energy conversion system using submarine hydrothermal;　2018/06
  ANNOUNCEMENT INFO.;　Grand Renewable Energy 2018, O-Oe-3-4
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga, Takafumi Morisaki, Shoichiro Baba, Tsuyoshi Miyazaki, Tadahiro Hyakudome and Hiroshi Yoshida
  
• Thermodynamical optimum heat source mean velocity in heat exchangers on OTEC;　2018/06
  ANNOUNCEMENT INFO.;　Grand Renewable Energy 2018, O-Oe-3-2
  AUTHOR;　Takeshi Yasunaga, Natsuki Koyama, Takafumi Noguchi Taakafumi Morisaki and Yasuyuki Ikegami
  
• Theoretical effectiveness of the multi temperature level cycles considering irriversibility in heat transfer on OTEC;　2018/06
  ANNOUNCEMENT INFO.;　Grand renewable energy 2018, O-Oe-31
  AUTHOR;　Takeshi Yasunaga, Takafumi Morisaki, Yasuyuki Ikegami
  
• The Visualization of Evaporation in Plate Heat Exchanger for Low-grade Thermal Energy Conversion;　2018/06
  ANNOUNCEMENT INFO.;　The 23rd National Symposium on Power and Energy Systems, E123
  AUTHOR;　Yasuyuki IKEGAMI, Takeshi YASUNAGA,Takahumi MORISAKI and Kiwamu SASAKI
  
• Basis of Heat Exchanger Performance on Finite-time Thermodynamics in OTEC;　2018/06
  ANNOUNCEMENT INFO.;　The 23rd National Symposium on Power and Energy Systems, E121
  AUTHOR;　Takeshi YASUNAGA, Natsuki KOYAMA,Takafumi NOGUCHI, Takafumi MORISAKI and Yasuyuki IKEGAMI
  
• 2段ランキンサイクルを用いた海洋温度差発電実験プラントの目標発電出力変更を考慮した制御シミュレーション;　2017/11
  ANNOUNCEMENT INFO.;　, SaA3-2
  AUTHOR;　
  
• ランキンサイクルを用いた海洋温度差発電プラント実時間遠隔操作のためのWebアプリケーション開発;　2017/11
  ANNOUNCEMENT INFO.;　, 102C5, 91-94
  AUTHOR;　
  
• 淡水出口バルブの動特性を考慮したスプレーフラッシュ蒸発式海水淡水化システムの補助凝縮器水位モデルの構築;　2017/11
  ANNOUNCEMENT INFO.;　, 103B4, 123-126
  AUTHOR;　
  
• スプレーフラッシュ蒸発式海水淡水化システムの補助凝縮器水位モデルの構築;　2017/09
  ANNOUNCEMENT INFO.;　, 08-1A-03, 70
  AUTHOR;　
  
• An Improvement on LQG Controller for Liquid Level Control of Separator in an OTEC Experimental Plant Using Uehara Cycle;　2017/09
  ANNOUNCEMENT INFO.;　SICE 2017, 1496-1501
  AUTHOR;　Yoshitaka Matsuda, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Evaluation of a Liquid Level Model of Separator in an OTEC Experimental Plant Using Uehara Cycle via Different Experimental Data;　2017/09
  ANNOUNCEMENT INFO.;　SICE2017, 1490-1495
  AUTHOR;　Yoshitaka Matsuda, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Construction of Water Level Model for After Condenser in Spray Flash Desalination System via Stochastic Process;　2017/09
  ANNOUNCEMENT INFO.;　The 49th ISCIE International Symposium on Stochastic Systems Theory and Its Applications, 100-105
  AUTHOR;　Yoshitaka Matsuda, Yoshihiro Eishima, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Application of Finite-time Thermodynamics for Evaluation Method of Heat Engines;　2017/09
  ANNOUNCEMENT INFO.;　Energy Procedia, 129, 995-1001
  AUTHOR;　Takeshi Yasunaga and Yasuyuki Ikegami
  
• Control of OTEC Plant Using Double-stage Rankine Cycle Considering Warm Seawater Temperature Variation;　2017/07
  ANNOUNCEMENT INFO.;　Preprints of the 21th World Congress, The International Federation of Automatic Control, 50, 1, 135-140
  AUTHOR;　Yoshitaka Matsuda, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Web Application for OTEC Simulator Using Double-stage Rankine Cycle;　2017/07
  ANNOUNCEMENT INFO.;　Preprints of the 20th World Congress, The International Federation of Automatic Control, 50, 1, 121-128
  AUTHOR;　Satoru Goto, Yoshitaka Matsuda, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami and Naruto Egashira
  
• 海底熱水温度差発電システムの性能解析に関する研究;　2017/06
  ANNOUNCEMENT INFO.;　, E126
  AUTHOR;　Yasuyuki IKEGAMI, Takeshi YASUNAGA, Takafumi MORISAKI, Shoichiro BABA, Tsuyoshi MIYAZAKI, Tadahiro HYAKUDOME and Hiroshi YOSHIDA
  
• Study of Available Thermal Energy on OTEC;　2017/06
  ANNOUNCEMENT INFO.;　, E124
  AUTHOR;　
  
• Study of System Design Method for Rankine Cycle System on OTEC;　2017/06
  ANNOUNCEMENT INFO.;　, E125
  AUTHOR;　Takafumi NOGUCHI, Takeshi YASUNAGA, Takafumi MORISAKI, Yuki Nakano and Yasuyuki IKEGAMI
  
• Study of Available Thermal Energy on OTEC;　2017
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 2017, 0, -
  AUTHOR;　YASUNAGA Takeshi;MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Study of System Design Method for Rankine Cycle System on OTEC;　2017
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 2017, 0, -
  AUTHOR;　NOGUCHI Takafumi;YASUNAGA Takeshi;MORISAKI Takafumi;Nakano Yuki;IKEGAMI Yasuyuki
  
• Parametric Analysis of Thermal Energy Conversion System Using Submarine Hydrothermal;　2017
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 2017, 0, -
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;MORISAKI Takafumi;BABA Shoichiro;MIYAZAKI Tsuyoshi;HYAKUDOME Tadahiro;YOSHIDA Hiroshi
  
• Control Simulation for OTEC Plant Using Double-stage Rankine Cycle by Considering the Target Power Output Variation;　2017
  ANNOUNCEMENT INFO.;　Proceedings of the Japan Joint Automatic Control Conference, 60, 0, 319 - 324
  AUTHOR;　Matsuda Yoshitaka;Goto Satoru;Sugi Takenao;Morisaki Takafumi;Yasunaga Takeshi;Ikegami Yasuyuki
  
• 2段ランキンサイクル海洋温度差発電プラントのシミュレータに基づく遠隔操作Webアプリケーション開発;　2016/12
  ANNOUNCEMENT INFO.;　, 544-548
  AUTHOR;　
  
• Model Construction of Warm Water Temperature of Heat Source in an OTEC Experimental Plant via Stochastic Process;　2016/11
  ANNOUNCEMENT INFO.;　The 48th ISCIE International Symposium on Stochastic Systems Theory and Its Applications, ４, ５, 70-75
  AUTHOR;　Yoshitaka Matsuda, Satoru Goto, Takenao Sugi, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami
  
• The visualization of evaporation and condensation in plate heat exchanger (The effect of inlet quality);　2016/10
  ANNOUNCEMENT INFO.;　, C111
  AUTHOR;　
  
• Heat Source Temperature Difference and Maximum Power of Multi-stage Rankine Cycle;　2016/10
  ANNOUNCEMENT INFO.;　, D214
  AUTHOR;　
  
• Turbulence-induced enhancement of heat transfer performance by means of air/liquid mixing in plate heat exchangers;　2016/10
  ANNOUNCEMENT INFO.;　, C112
  AUTHOR;　Sami Mutair, Takeshi Yasunaga, Takafumi Morisaki, Yasuyuki Ikegami
  
• Optimization of OTEC Design Parameter for Staging Rankine Cycle;　2016/08
  ANNOUNCEMENT INFO.;　2016 International Ocean Energy Symposium & 15th Joint Young Researcher Forum
  AUTHOR;　Yuki NAKANO, Takeshi YASUNAGA, Takafumi MORISAKI, Eisuke KUSUDA and Yasuyuki IKEGAMI
  
• The visualization of Evaporation-Condensation and Heat Transfer Performance Analysis on Plate Type Heat Exchangers;　2016/08
  ANNOUNCEMENT INFO.;　2016 International Ocean Energy Symposium & 15th Joint Young Researcher Forum
  AUTHOR;　
  
• THE VISUALIZATION OF PHASE CHANGE PHENOMENA IN HERRINGBONE TYPE PLATE HEAT EXCHANGER USING 3D-PRINTER;　2016/08
  ANNOUNCEMENT INFO.;　The 27th International Symposium on Transport Phenomena
  AUTHOR;　M. NAKAMURA, Y. KAWABATA, T. YASUNAGA and Y. IKEGAMI
  
• Study of OTEC System Design Method for Multi-stage Rankine Cycle System;　2016/06
  ANNOUNCEMENT INFO.;　, E124
  AUTHOR;　
  
• Reduction of Required Seawater Quantity by Multi-stage Rankine Cycle on OTEC;　2016/06
  ANNOUNCEMENT INFO.;　, 2016, E123
  AUTHOR;　
  
• 海洋熱エネルギーを利用した海水淡水化システムの最大回収率に関する研究;　2016/06
  ANNOUNCEMENT INFO.;　Bull. Soc. Sea Water Sci., Jpn., 70, 3, 2016
  AUTHOR;　
  
• Construction of Dynamic Model for Warm Heat Source in an OTEC Experimental Plant Based on Experimental Data of Warm Water Temperature;　2016
  ANNOUNCEMENT INFO.;　Proceedings of the Japan Joint Automatic Control Conference, 59, 0, 748-752
  AUTHOR;　Shimada T.;Matsuda Y.;Sugi T.;Goto S.;Morisaki T.;Yasunaga T.;Ikegami Y.
  
• Improvement of User Interface Function of Remote Monitoring System for OTEC Plant;　2016
  ANNOUNCEMENT INFO.;　Proceedings of the Japan Joint Automatic Control Conference, 59, 0, 39-44
  AUTHOR;　Ueno T.;Matsuda Y.;Sugi T.;Goto S.;Morisaki T.;Yasunaga T.;Ikegami Y.;Egashira N.
  
• 久米島海洋深層水を利用した海水淡水化装置の連続運転;　2015/11
  ANNOUNCEMENT INFO.;　, 16, 2, 61
  AUTHOR;　
  
• 多段ランキンサイクルを用いたOTECによる海水流量低減の検討;　2015/11
  ANNOUNCEMENT INFO.;　, 16, 2, 62
  AUTHOR;　
  
• 低温度差発電のエクセルギーと熱機関の最大出力を用いた評価方法の検討;　2015/09
  ANNOUNCEMENT INFO.;　, C134
  AUTHOR;　
  
• Multi-Stage Cycle for Advanced OTEC System in Saga University;　2015/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Takeshi YASUNAGA, Takafumi MORISAKI and Yasuyuki IKEGAMI
  
• 多段ランキンサイクルにおける伝熱性能と段数の影響;　2015/08
  ANNOUNCEMENT INFO.;　, E15
  AUTHOR;　
  
• プレート式熱交換器の二相状態における可視化と伝熱性能;　2015/07
  ANNOUNCEMENT INFO.;　, E17
  AUTHOR;　
  
• D117 Experimental research of OTEC using ammonia/water mixture as working fluid;　2008/06
  ANNOUNCEMENT INFO.;　, 2008, 13, 185186
  AUTHOR;　Ikegami Yasuyuki;Asou Hiroyuki;Yasunaga Takeshi;Inadomi Junichi;Goto Hirokazu
  
• D116 Evaluation for Renewable Energy Generation System using Low-grade Thermal Energy Conversion (LTEC);　2008/06
  ANNOUNCEMENT INFO.;　, 2008, 13, 183184
  AUTHOR;　Ikegami Yasuyuki;Yasunaga Takeshi
  
• Performance Test of OTEC with Ammonia/water as Working Fluid Using Shell and Plate Type Heat Exchangers : Effects of Heat Source Temperature and Flow Rate(Thermal Engineering);　2008/02
  ANNOUNCEMENT INFO.;　, 74, 738, 445452
  AUTHOR;　YASUNAGA Takeshi;IKEGAMI Yasuyuki;MONDE Masanori
  
• Comparison between Kalina Cycle and Conventional OTEC System Using Ammonia-water Mixtures as Working Fluid;　2007/07
  ANNOUNCEMENT INFO.;　17th International Offshore and Polar Engineering Conference
  AUTHOR;　Hiroyuki Aso, Takeshi Yasunaga, Yasuyuki Ikegami
  
• OS2-22 Effect of Mass Fraction of Ammonia on OTEC Systemwith Ammonia/water Mixture as Working Fluid;　2007/06
  ANNOUNCEMENT INFO.;　, 2007, 12, 367368
  AUTHOR;　IKEGAMI Yasuyuki;ASOU Hiroyuki;YASUNAGA Takeshi;MANDA Hirokazu;INADOMI Junichi
  
• OS2-23 Research on cycle of OTEC System using Ammonia-Water Mixtures as Working Fluid;　2007/06
  ANNOUNCEMENT INFO.;　, 2007, 12, 369370
  AUTHOR;　ASOU Hiroyuki;YASUNAGA Takeshi;INADOMI Junichi;IKEGAMI Yasuyuki
  
• 2007S-OS2-1 Effect of Mass Fraction of Ammonia/Water Mixture on OTEC System with Uehaara Cycle;　2007/05
  ANNOUNCEMENT INFO.;　, 4, 3738
  AUTHOR;　IKEGAMI Yasuyuki;ASOU Hiroyuki;YASUNAGA Takeshi;MANDA Hirokazu;INADOMI Junichi
  
• Effect of the variation of heat source inlet and outlet temperatures on the performance of the Rankine and the Kalina cycles in OTEC;　2007
  ANNOUNCEMENT INFO.;　, 63-65
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• Performance and economical analyses of benchmark plant for selective lithium recovery from seawater;　2007
  ANNOUNCEMENT INFO.;　The 4th International Conference on Ion Exchange (ICIE’07)
  AUTHOR;　Kazuharu Yoshizuka, Holba Mark, Takeshi Yasunaga, Yasuyuki Ikegami, Gottfried J.
  
• 216 Performance Tests of a Plate Type Evaporator for OTEC Using Ammonia/Water Mixture as Working Fluid;　2006/10
  ANNOUNCEMENT INFO.;　, 2006, 7374
  AUTHOR;　IKEGAMI Yasuyuki;ASOU Hiroyuki;YASUNAGA Takeshi;KUBO Kaori;MANDA Hirokazu
  
• 4-11. Characteristics and the Effect of Heat Source Conditions on Ocean Thermal Energy Conversion System Using Uehara Cycle;　2006/08
  ANNOUNCEMENT INFO.;　, 15, 291292
  AUTHOR;　YASUNAGA Takeshi;HARADA Hidemitsu;IKEGAMI Yasuyuki
  
• CHARACTERISTICS AND ESTIMATION OF OCEAN THERMAL ENERGY CONVERSION SYSTEM USING UEHARA CYCLE;　2006
  ANNOUNCEMENT INFO.;　RENEWABLE ENERGY 2006
  AUTHOR;　Takeshi Yasunaga, Yasuyuki Ikegami
  
• Experimental Performance Evaluation of Ocean Thermal Energy Conversion System Using Uehara Cycle;　2006
  ANNOUNCEMENT INFO.;　RENEWABLE ENERGY 2006
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga
  
• Dreams and Problems as an Future Energy Researcher;　2006
  ANNOUNCEMENT INFO.;　Inter-COE International Symposium on Energy Systems, 44-45
  AUTHOR;　Takeshi Yasunaga
  
• OS2-15 Experimental Study on OTEC System Using Ammonia / Water Mixture as Working Fluid;　2005/06
  ANNOUNCEMENT INFO.;　, 2005, 10, 203204
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;HARADA Hidemitsu;UEHARA Haruo
  
• OS2-14 A Study of Optimum Mass Fraction of OTEC Using Ammonia / Water Mixture as Working Fluid;　2005/06
  ANNOUNCEMENT INFO.;　, 2005, 10, 201202
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;UEHARA Haruo
  
• Effect of Regenerator Heat Transfer Performance on the Cycle Thermal Efficiency of OTEC Using Ammonia - Water as Working Fluid;　2005/06
  ANNOUNCEMENT INFO.;　15th International Offshore and Polar Engineering Conference
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga, Haruo Uehara, H.
  
• Performance Improvement of Ocean Thermal Energy Conversion System using Ammonia / Water Mixtures as Working Fluid;　2005
  ANNOUNCEMENT INFO.;　6th KSME-JSME Thermal and Fluids Engineering Conference, JK.07
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga, Haruo Uehara
  

Application of Intellectual Property Rights

• 水処理システム及び水処理方法;　2017/03
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 水処理システム;　2015/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 水処理システム及び水処理方法;　2015/01
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 逆浸透膜装置の運転方法;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 逆浸透膜装置及びその運転方法;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 逆浸透膜装置;　2014/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• モジュール浮体発電装置;　2014/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置およびその制御方法;　2013/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置;　2013/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置およびその制御方法;　2013/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置およびこれを備えた浮体構造物ならびに波力発電装置の制御方法;　2013/08
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 逆浸透膜装置の運転方法;　2013/02
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 逆浸透膜装置及びその運転方法;　2013/02
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置;　2012/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置の固有振動調整機構;　2012/10
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 波力発電装置;　2011
  ANNOUNCEMENT INFO.;　, 特開2011-117311
  AUTHOR;　
  

Review Articles

• 海洋温度差発電の特徴と開発動向;　2018/12
  ANNOUNCEMENT INFO.;　, 41, 12, 979-983
  AUTHOR;　
  
• 海洋温度差発電Q&A;　2016/08
  ANNOUNCEMENT INFO.;　, 103, 7, 4-9
  AUTHOR;　
  

Invited Lecture, Special Lecture

• Heat Transfer Performance Test of A Plate Type Heat Exchanger for Hybrid Ocean Thermal Energy Conversion (OTEC) System;　2021/06
  ANNOUNCEMENT INFO.;　The 1st International Conference of Advanced Research on Renewable Energy for Universal Sustainability 2021 (ARUS 2021)
  AUTHOR;　Yasunaga, T., Morisaki, T., Miyazono, S., Nakamura, T., Thirugnana, T. S., Jaafar, A. B., Chiong, M. S., Nakaoka, T., Ikegami, Y.
  
• 海洋温度差発電の最新動向とエネルギー利用の可能性;　2018/05
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• 海洋温度差発電の最適設計;　2017/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　
  
• The Advanced Technology and The Future Concept for OTEC in Japan and The World;　2016/03
  ANNOUNCEMENT INFO.;　Island Environment and Climate Change in Asia-Pacific Region
  AUTHOR;　Takeshi Yasunaga
  
• Global innovation using OTEC for stable energy and sustainable water;　2015/07
  ANNOUNCEMENT INFO.;　International Seminar and Exhibition on New Development on Ocean Energy in Asia Pasific
  AUTHOR;　Yasuyuki Ikegami, Takeshi Yasunaga