Detailed Information

Research Field/Keywords for Research Field

• OTEC, LTEC, heat exchanger

Education

• 2009/03, Saga University, Faculty of Science and Engineering, Department of Mechanical and System Engineering, Graduated
• 2011/03, Saga University, Graduate School of Science and Engineering, Department of Mechanical Engineering, Master Course, Completed
• 2014/03, Saga University, Graduate School of Science and Engineering, Department of Science and Advanced Technology, Doctor Course, Completed

Membership in Academic Societies

• Deep Ocean Water Applications Society, The Japan Society of Mechanical Engineers, ISOPE (International Society of Offshore and Polar Engineers)

Themes for Ongoing Research

• Improvement of Ocean Thermal Energy Conversion
• Flow Visualization of Heat exchanger
• Experimental study of Hybrid Hot Spring Thermal Energy Conversion
• Scaling of Hot Spring Water in Hot Spring Thermal Energy Conversion
• Maximum Power of Multi-stage Cycle
• Experimental study of Hybrid Hot Spring Thermal Energy Conversion using R1224yd as working fluid

Research Themes in the Past

• Flow Visualization of Heat exchanger
• Maximum Power of Multi-stage Cycle

Research Topics and Results

• Experimental Study of Small Scale Hybrid Hot Spring Thermal Energy Conversion 2023/04
• Water Level Control of After Condenser in a Spray Flash Desalination System Using Stochastic Process 2019
• Study of available thermal energy on OTEC 2018
• Construction of a Static Model for Power Generation of OTEC Plant Using Uehara Cycle Based on Experimental Data 2018
• Performance Evaluation Method of Ocean Thermal Energy Conversion System 2017
• SEAWATER FLOW RATE REGULATION OF OTEC PLANT USING UEHARA CYCLE BY CONSIDERING WARM SEAWATER TEMPERATURE VARIATION 2017
• Performance Evaluation of Heat Exchangers for Application to Ocean Thermal Energy Conversion System 2017
• An Improvement on LQG Controller for Liquid Level Control of Separator in an OTEC Experimental Plant Using Uehara Cycle 2017
• Evaluation of a Liquid Level Model of Separator in an OTEC Experimental Plant Using Uehara Cycle via Different Experimental Data 2017
• Construction of Water Level Model for After Condenser in Spray Flash Desalination System via Stochastic Process 2017
• Construction of OTEC Potential Model Based on Cycle Analysis 2017
• Control of OTEC Plant Using Double-stage Rankine Cycle Considering Warm Seawater Temperature Variation 2017
• Web Applicaton for OTEC Simulator Using Double-stage Rankine Cycle 2017
• Potential Evaluation of Ocean Thermal Energy Conversion 2015
• Performance Test of Double-stage Rankine Cycle Experimental Plant for OTEC 2015
• Evaluation of performance characteristics of multi-stage Rankine cycle based on maximum power 2015
• Spectrum Analysis of OTEC Experimental Plant Under Continuous Operation 2014
• Double-Stage Rankine Cycle for Ocean Thermal Energy Conversion 2014
• Maximum power of a multistage Rankine cycle in low-grade thermal energy conversion 2014

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
  AUTHOR;　Ahmad Aiman Azmi, Takeshi Yasunaga, Kevin Fontaine, Takafumi Morisaki, Tsutomu Nakaoka, Sathiabama T. Thirugnana, Abu Bakar Jaafar, Yasuyuki Ikegami
  
• Net Power Generation Control of OTEC Plant Using Rankine Cycle with Seawater Pumps by Warm Seawater Flow Rate Regulation;　2023/07
  ANNOUNCEMENT INFO.;　IFAC-PapersOnLine, 56, 2, 2275-2280
  AUTHOR;　Yoshitaka Matsuda, Ryo Izutsu, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Experimental Study of Small Scale Hybrid Hot Spring Thermal Energy Conversion;　2023/04
  ANNOUNCEMENT INFO.;　, 2023, 921, 22-00264
  AUTHOR;　Takafumi MORISAKI, Takeshi YASUNAGA, Yasuyuki IKEGAMI
  
• Construction of a State Space Model with Working Fluid Flow Rate Inputs for an OTEC Plant Using Double-stage Rankine Cycle;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Matsuda Yoshitaka, Suyama Daiki, Sugi Takenao, Goto Satoru, Morisaki Takafumi, Yasunaga Takeshi, Ikegami Yasuyuki
  
• Construction of a 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;　Yoshitaka Matsuda;Daiki Suyama;Takenao Sugi;Satoru Goto;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Construction of a Dynamic Model for an OTEC Plant Using Hybrid Cycle Based on a Simple Dynamic Model;　2021
  ANNOUNCEMENT INFO.;　Proceedings of SICE Annual Conference 2021, 180 - 183
  AUTHOR;　Yoshitaka Matsuda;Takenao Sugi;Satoru Goto;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Water Level Control of After Condenser in a Spray Flash Desalination System Using Stochastic Process;　2019
  ANNOUNCEMENT INFO.;　, 32, 1, 24 - 31
  AUTHOR;　MATSUDA Yoshitaka;EISHIMA Yoshihiro;GOTO Satoru;SUGI Takenao;MORISAKI Takafumi;YASUNAGA Takeshi;IKEGAMI Yasuyuki
  
• Basic Heat Exchanger Performance Evaluation Method on OTEC;　2018
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 6, 2, 32
  AUTHOR;　Takeshi Yasunaga;Takafumi Noguchi;Takafumi Morisaki;Yasuyuki Ikegami
  
• Ocean Thermal Energy Conversion Using Double-Stage Rankine Cycle;　2018
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 6, 1, 21
  AUTHOR;　Yasuyuki Ikegami;Takeshi Yasunaga;Takafumi Morisaki
  
• Study of available thermal energy on OTEC;　2018
  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
  ANNOUNCEMENT INFO.;　Journal of Marine Science and Engineering, 6, 1, 18
  AUTHOR;　Yoshitaka Matsuda;Takuma Yoshitake;Takenao Sugi;Satoru Goto;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Thermody namical optimum heat source mean velocity in heat exchangers on OTEC;　2018
  ANNOUNCEMENT INFO.;　Grand Renewable Energy proceedings, 1, 241
  AUTHOR;　Yasunaga Takeshi;Koyama Natsuki;Noguchi Takafumi;Morisaki Takafumi;Ikegami Yasuyuki
  
• Anti-Windup Compensation for Water Level Control of a Spray Flash Desalination System with Flow Rate Limitations;　2018
  ANNOUNCEMENT INFO.;　IEEE Conference Proceedings, 2018, CCTA, 1363 - 1368
  AUTHOR;　Matsuda Yoshitaka;Sakai Ryoichi;Sugi Takenao;Gotol Satoru;Morisaki Takafumi;Yasunaga Takeshi;Ikegami Yasuyuki
  
• Simultaneous Regulation of Multiple Flow Rates for Power Generation Control of OTEC Plant Using Double-Stage Rankine Cycle;　2018
  ANNOUNCEMENT INFO.;　IEEE Conference Proceedings, 2018, SICE, 983 - 988
  AUTHOR;　Matsuda Yoshitaka;Oouchida Riku;Sugi Takenao;Goto Satoru;Morisaki Takafumi;Yasunaga Takeshi;Ikegami Yasuyuki
  
• SEAWATER FLOW RATE REGULATION OF OTEC PLANT USING UEHARA CYCLE BY CONSIDERING WARM SEAWATER TEMPERATURE VARIATION;　2017
  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;Yasuyuki Ikegami
  
• An Improvement on LQG Controller for Liquid Level Control of Separator in an OTEC Experimental Plant Using Uehara Cycle;　2017
  ANNOUNCEMENT INFO.;　SICE Annual Conference 2017 in Kanazawa（SICE2017）, 1496 - 1501
  AUTHOR;　Yoshitaka Matsuda;Satoru Goto;Takenao Sugi;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Evaluation of a Liquid Level Model of Separator in an OTEC Experimental Plant Using Uehara Cycle via Different Experimental Data;　2017
  ANNOUNCEMENT INFO.;　SICE Annual Conference 2017 in Kanazawa（SICE2017）, 1490 - 1495
  AUTHOR;　Yoshitaka Matsuda;Satoru Goto;Takenao Sugi;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Construction of Water Level Model for After Condenser in Spray Flash Desalination System via Stochastic Process;　2017
  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;Yasuyuki Ikegami
  
• Construction of OTEC Potential Model Based on Cycle Analysis;　2017
  ANNOUNCEMENT INFO.;　, 30, 8, 297 - 304
  AUTHOR;　Yoshitaka Matsuda;Daiki Urayoshi;Takenao Sugi;Satoru Goto;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Control of OTEC Plant Using Double-stage Rankine Cycle Considering Warm Seawater Temperature Variation;　2017
  ANNOUNCEMENT INFO.;　IFAC-PapersOnLine, 50, 1, 135 - 140
  AUTHOR;　Yoshitaka Matsuda;Satoru Goto;Takenao Sugi;Takafumi Morisaki;Takeshi Yasunaga;Yasuyuki Ikegami
  
• Web Applicaton for OTEC Simulator Using Double-stage Rankine Cycle;　2017
  ANNOUNCEMENT INFO.;　IFAC-PapersOnLine, 50, 1, 121 - 128
  AUTHOR;　Satoru Goto;Yoshitaka Matsuda;Takenao Sugi;Takafumi Morisaki;Takeshi Yasunaga;Yasunori Ikegami;Naruto Egashira
  
• Liquid Level Control of Separator in an OTEC Plant with Uehara Cycle;　2016
  ANNOUNCEMENT INFO.;　, 29, 12, 535 - 543
  AUTHOR;　MATSUDA Yoshitaka;GOTO Satoru;SUGI Takenao;MORISAKI Takafumi;YASUNAGA Takeshi;IKEGAMI Yasuyuki
  
• Performance Test of Double-stage Rankine Cycle Experimental Plant for OTEC;　2015
  ANNOUNCEMENT INFO.;　Procedia Engineering, 105, 713 - 718
  AUTHOR;　Eisuke Kusuda;Takafumi Morisaki;Yasuyuki Ikegami
  
• Spectrum Analysis of OTEC Experimental Plant Under Continuous Operation;　2014
  ANNOUNCEMENT INFO.;　DEEP OCEAN WATER RESEARCH, 14, 3, 197 - 210
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki;GOTO Satoru
  
• Double-Stage Rankine Cycle for Ocean Thermal Energy Conversion;　2014
  ANNOUNCEMENT INFO.;　DEEP OCEAN WATER RESEARCH, 14, 3, 185 - 195
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Maximum power of a multistage Rankine cycle in low-grade thermal energy conversion;　2014
  ANNOUNCEMENT INFO.;　Applied Thermal Engineering, 69, 44198.0, 78 - 85
  AUTHOR;　Takafumi Morisaki;Yasuyuki Ikegami
  
• Influence of temperature difference calculation method on the evaluation of Rankine cycle performance;　2014
  ANNOUNCEMENT INFO.;　Journal of Thermal Science, 23, 1, 68 - 76
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Performance evaluation of heat exchangers in OTEC using ammonia/water mixture as working fluid;　2013
  ANNOUNCEMENT INFO.;　Open Journal of Fluid Dynamics, 3, 4, 302 - 310
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  

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

• Trends and Prospects of Ocean Thermal Energy Conversion;　2023/07
  ANNOUNCEMENT INFO.;　Journal of Japan Solar Energy Society, 49, 4, 23-30
  AUTHOR;　Takafumi Morisaki
  
• Performance Evaluation Method of Ocean Thermal Energy Conversion System;　2017
  ANNOUNCEMENT INFO.;　, 22, 37 - 46
  AUTHOR;　
  
• Performance Evaluation of Heat Exchangers for Application to Ocean Thermal Energy Conversion System;　2017
  ANNOUNCEMENT INFO.;　, 22, 65 - 75
  AUTHOR;　Takeshi YASUNAGA;Kevin FONTAINE;Takafumi MORISAKI;Yasuyuki IKEGAMI
  
• Potential Evaluation of Ocean Thermal Energy Conversion;　2015
  ANNOUNCEMENT INFO.;　, 20, 21 - 31
  AUTHOR;　Morisaki Takafumi;Yasunaga Takeshi;Ikegami Yasuyuki
  

General Lectures

• Power Generation Control of OTEC Plant Using Hybrid Cycle by Working Fluid Flow Rate Regulation;　2022/11
  ANNOUNCEMENT INFO.;　
  AUTHOR;　R. Izutsu, Y. Matsuda, T. Sugi, S. Goto, T. Morisaki T. Yasunaga and Y. Ikegami
  
• Construction of a State Space Model for a Spray Flash Desalination System with Valve Dynamics;　2022/09
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Yoshitaka Matsuda, Ayato Ehara, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga, Yasuyuki Ikegami
  
• Experimental Study of Small Scale Hybrid Hot Spring Thermal Energy Conversion;　2022/07
  ANNOUNCEMENT INFO.;　
  AUTHOR;　Takafumi MORISAKI, Takeshi YASUNAGA, Kousuke MATSUO and Yasuyuki IKEGAMI
  
• 小型ハイブリッド温泉温度差発電の実験的研究;　2022/07
  ANNOUNCEMENT INFO.;　, C112
  AUTHOR;　
  
• A Pseudo-measurement Approach to State Estimation for Liquid Level Control of Separator in an OTEC Plant Using Uehara Cycle;　2022/04
  ANNOUNCEMENT INFO.;　Proceedings of the 53rd ISCIE International Symposium on Stochastic Systems Theory and Its Applications, Ritsumeikan University, Shiga, JAPAN, HYBRID symposium, October 30-31, 2021, 129-134
  AUTHOR;　Kotaro Ushijima, Yoshitaka Matsuda, Takenao Sugi, Satoru Goto, Takafumi Morisaki, Takeshi Yasunaga and Yasuyuki Ikegami
  
• Target Level Determination for Water Level Control of Spray Flash Desalination System with Flow Rate Limitations;　2018/05
  ANNOUNCEMENT INFO.;　, 62, -
  AUTHOR;　
  
• The Visualization of Evaporation in Plate Heat Exchanger for Low-grade Thermal Energy Conversion;　2018
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 23, E123
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;MORISAKI Takahumi;SASAKI Kiwamu
  
• Basis of Heat Exchanger Performance on Finite-time Thermodynamics in OTEC;　2018
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 23, E121
  AUTHOR;　YASUNAGA Takeshi;KOYAMA Natsuki;NOGUCHI Takafumi;MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Construction of Water Level Model for After Condenser in Spray Flash Desalination System via Stochastic Process;　2018
  ANNOUNCEMENT INFO.;　Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications, 49th, 100 - 105
  AUTHOR;　MATSUDA Yoshitaka;EISHIMA Yoshihiro;GOTO Satoru;SUGI Takenao;MORISAKI Takafumi;YASUNAGA Takeshi;IKEGAMI Yasuyuki
  
• Performance Evaluation of the Plate Type Heat Exchanger for OTEC;　2018
  ANNOUNCEMENT INFO.;　The 6th International OTEC Symposium
  AUTHOR;　Natsuki KOYAMA;Takeshi YASUNAGA;Takafumi NOGUCHI;Takafumi MORISAKI;Yasuyuki IKEGAMI
  
• The Visualization of Plate Heat Exchangers for Ocean Thermal Energy Conversion;　2018
  ANNOUNCEMENT INFO.;　The 6th International OTEC Symposium
  AUTHOR;　Kiwamu SASAKI;Takeshi YASUNAGA;Takahumi MORISAKI;Yasuyuki IKEGAMI
  
• Estimation of thermal energy conversion system using submarine hydrothermal;　2018
  ANNOUNCEMENT INFO.;　Grand Renewable Energy proceedings, 2018, O-Oe-3-4
  AUTHOR;　Yasuyuki Ikegami;Takeshi Yasunaga;Takafumi Morisaki;Shoichiro Baba;Tsuyoshi Miyazaki;Tadahiro Hyakudome;Hiroshi Yoshida
  
• Thermodynamical optimum heat source mean velocity in heat exchangers on OTEC;　2018
  ANNOUNCEMENT INFO.;　Grand Renewable Energy proceedings, 2018, O-Oe-3-2
  AUTHOR;　Takeshi Yasunaga;Natsuki Koyama;Takafumi Noguchi;Takafumi Morisaki;Yasuyuki Ikegami
  
• Theoretical effectiveness of the multi temperature level cycles considering irriversibility in heat transfer on OTEC;　2018
  ANNOUNCEMENT INFO.;　Grand Renewable Energy proceedings, 2018, O-Oe-3-1
  AUTHOR;　Takeshi Yasunaga;Takafumi Morisaki;Yasuyuki Ikegami
  
• Water Level Control for Flash Chamber in Spray Flash Desalination System;　2017/05
  ANNOUNCEMENT INFO.;　, 61, -
  AUTHOR;　
  
• Parametric Analysis of Thermal Energy Conversion System Using Submarine Hydrothermal;　2017
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 22, E126
  AUTHOR;　IKEGAMI Yasuyuki;YASUNAGA Takeshi;MORISAKI Takafumi;BABA Shoichiro;MIYAZAKI Tsuyoshi;HYAKUDOME Tadahiro;YOSHIDA Hiroshi
  
• 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, 22, tE125
  AUTHOR;　NOGUCHI Takafumi;YASUNAGA Takeshi;MORISAKI Takafumi;Nakano Yuki;IKEGAMI Yasuyuki
  
• Study of Available Thermal Energy on OTEC;　2017
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 22, E124
  AUTHOR;　YASUNAGA Takeshi;MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Construction of Water Level Model for After Condenser in Spray Flash Desalination System;　2017
  ANNOUNCEMENT INFO.;　Record of Joint Conference of Electrical and Electronics Engineers in Kyushu, 2017, 70 - 70
  AUTHOR;　
  
• Model Construction of Warm Water Temperature of Heat Source in an OTEC Experimental Plant via Stochastic Process;　2017
  ANNOUNCEMENT INFO.;　Proceedings of the ISCIE International Symposium on Stochastic Systems Theory and its Applications, 48th, 70 - 75
  AUTHOR;　MATSUDA Yoshitaka;GOTO Satoru;SUGI Takenao;MORISAKI Takafumi;YASUNAGA Takeshi;IKEGAMI Yasuyuki
  
• Construction of a Static Model for Power Generation of OTEC Plant Using Uehara Cycle Based on Experimental Data of Cold Source by Linear Interpolation;　2016/05
  ANNOUNCEMENT INFO.;　, 60, -
  AUTHOR;　
  
• Study of OTEC System Design Method for Multi-stage Rankine Cycle System;　2016
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 21, E124
  AUTHOR;　YASUNAGA Takeshi;MORISAKI Takafumi;KUSUDA Eisuke;NAKANO Yuki;IKEGAMI Yasuyuki
  
• Reduction of Required Seawater Quantity by Munti-stage Rankine Cycle on OTEC;　2016
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 21, E123
  AUTHOR;　NOGUCHI Takafumi;NAKANO Yuuki;MORISAKIT Takafumi;Yasunaga Takeshi;IKEGAMI Yasuyuki
  
• Heat Source Temperature Difference and Maximum Power of Multi-stage Rankine Cycle;　2016
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2016, D124
  AUTHOR;　Morisaki Takafumi;Yasunaga Takeshi;Ikegami Yasuyuki
  
• Turbulence-induced enhancement of heat transfer performance by means of air/liquid mixing in plate heat exchangers;　2016
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2016, C112
  AUTHOR;　MUTAIR Sami;YASUNAGA Takeshi;MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Influence of Heat Transfer Performance on Multi-stage Rankine Cycle;　2015
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 20, 347 - 350
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Pressure Loss and Net Power of Multi-stage Rankine Cycle;　2015
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 20, 355 - 358
  AUTHOR;　IKEGAMI Yasuyuki;NAKANO Yuki;MORISAKI Takafumi
  
• Research on the Influence of Temperature Difference between High- and Low-temperature Heat Sources on Multi-stage Rankine Cycle;　2015
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2015, C133
  AUTHOR;　Morisaki Takafumi;Yasunaga Takeshi;Ikegami Yasuyuki
  
• Study of Evaluation Method for Low-grade Thermal Energy Conversion Using Exergy and Maximum Work of Heat Engine;　2015
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2015, C134
  AUTHOR;　Yasunaga Takeshi;Morisaki Takafumi;Ikegami Yasuyuki
  
• The visualization of evaporation and condensation in plate type heat exchanger manufactured by 3Dprinter;　2015
  ANNOUNCEMENT INFO.;　Journal of the Visualization Society of Japan, 35, 1, 285 - 288
  AUTHOR;　
  
• Evaluation of performance characteristics of multi-stage Rankine cycle based on maximum power;　2015
  ANNOUNCEMENT INFO.;　Proceedings of the International Conference on Power Engineering, 2015.12, ICOPE-15-1154
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Multi-Stage Cycle for Advanced OTEC System in Saga University;　2015
  ANNOUNCEMENT INFO.;　The 3rd International OTEC Symposium
  AUTHOR;　Takeshi Yasunaga;Takafumi Morisaki;Yasuyuki Ikegami
  
• Maximum net power of multi-stage Rankine cycle;　2014
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 19, 133 - 136
  AUTHOR;　KUSUDA Eisuke;MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Experimental Study on Double-Stage Rankine Cycle for Ocean Thermal Energy Conversion (OTEC);　2014
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 19, 139 - 142
  AUTHOR;　MORISAKI Takafumi;KUSUDA Eisuke;IKEGAMI Yasuyuki
  
• Net power of low-grade thermal energy conversion system using multi-stage Rankine cycle;　2014
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2014, E111
  AUTHOR;　Morisaki Takafumi;Ikegami Yasuyuki
  
• Generalization of the Evaluation method about Maximum Net Power Output Using Multi-stage Rankine cycle;　2014
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2014, E112
  AUTHOR;　Kusuda Eisuke;Morisaki Takafumi;Ikegami Yasuyuki
  
• Experimental Study on OTEC using Double-Stage Rankine Cycle;　2014
  ANNOUNCEMENT INFO.;　Proceedings of 5th Asian Joint Workshop on Thermopysics and Fluid Science, JP15
  AUTHOR;　Ikegami, Y.;Morisaki, T.;Kusuda, E.
  
• An Experimental Investigation of Double-stage Rankine Cycle for OTEC;　2014
  ANNOUNCEMENT INFO.;　Pacific Congress on Marine Science and Technology (PACON 2014), 30 (Session 2-3)
  AUTHOR;　Morisaki, T.;Kusuda, E.;Ikegami, Y.
  
• Comparison between the conventional method and a new developed method for calculating a multi-stage Rankine cycle;　2014
  ANNOUNCEMENT INFO.;　Grand Renewable Energy proceedings, 2014, O-Oc-12-2
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Construction of a Static Model for OTEC Plant Using Uehara Cycle Based on Experimental Data;　2013/05
  ANNOUNCEMENT INFO.;　, 57, -
  AUTHOR;　
  
• Research on Heat Pump and Refrigerating Cycle of Multi-Stage Reverse Rankine Cycle;　2013/04
  ANNOUNCEMENT INFO.;　, 47, 99 - 102
  AUTHOR;　IKEGAMI Yasuyuki;MORISAKI Takafumi
  
• Heat transfer enhancement using micro fabrication surface on plate evaporator;　2013/04
  ANNOUNCEMENT INFO.;　, 47, 111 - 114
  AUTHOR;　Ikegami Yasuyuki;Arima Hirofumi;Kawabata Yusuke;Morisaki Takafumi;Okamoto Akio;Itsumi Yoshio
  
• Evaluation for Multi-Stage Rankine Cycle in Low-grade Thermal Energy Conversion (LTEC);　2013
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 18, 247 - 250
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Maximum Power of Multi-Stage Rankine Cycle in Low-grade Thermal Energy Conversion (LTEC);　2013
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2013, 321 - 322
  AUTHOR;　Ikegami Yasuyuki;Morisaki Takafumi
  
• OTEC Using Multi-stage Rankine Cycle;　2013
  ANNOUNCEMENT INFO.;　Proceedings of 23rd (2013) International Offshore (Ocean) and Polar Engineering Conference, 1, 451 - 456
  AUTHOR;　IKEGAMI Yasuyuki;MORISAKI Takafumi
  
• Research on Low-grade Thermal Energy Conversion using HFC245fa as working fluid;　2012
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 17, 249 - 252
  AUTHOR;　IKEGAMI Yasuyuki;MORISAKI Takafumi
  
• Heat transfer enhancement using micro fabrication surface on plate heat exchanger;　2012
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2012, 417 - 418
  AUTHOR;　Ikegami Yasuyuki;Arima Hirofumi;Kawabata Yusuke;Morisaki Takafumi;Okamoto Akio;Itsumi Yoshio
  
• Selection of Working Fluids for Double Stage-Rankine cycle Application;　2012
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2012, 421 - 422
  AUTHOR;　Morisaki Takafumi;Ikegami Yasuyuki
  
• Investigation on Maximum Power and Thermal Efficiency of Cycle in LTEC;　2012
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2012, 423 - 424
  AUTHOR;　Ikegami Yasuyuki;Morisaki Takafumi
  
• Research on Ocean Thermal Energy Conversion using HFC245fa as Working Fluid;　2012
  ANNOUNCEMENT INFO.;　Proceedings of 22nd (2012) International Offshore (Ocean) and Polar Engineering Conference, 1, 776 - 782
  AUTHOR;　MORISAKI Takafumi;IKEGAMI Yasuyuki
  
• Research on Double Stage-Rankine Cycle for Ocean Thermal Energy Conversion using Ammonia as Working Fluid;　2012
  ANNOUNCEMENT INFO.;　Proceedings of 22nd (2012) International Offshore (Ocean) and Polar Engineering Conference, 1, 769 - 775
  AUTHOR;　IKEGAMI Yasuyuki;MORISAKI Takafumi
  
• Influence of heat transfer area on the maximum net power of OTEC using ammonia/water mixture;　2011
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 16, 73 - 76
  AUTHOR;　IKEGAMI Yasuyuki;MORISAKI Takafumi;FURUKAWA Takayuki;KISHIKAWA Yasuhiro
  
• Study on Evaluation of Low-grade Thermal Energy Conversion as Renewable Energy;　2011
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 16, 77 - 78
  AUTHOR;　IKEGAMI Yasuyuki;MORISAKI Takafumi
  
• Double Stage-Rankine cycle for Low-grade Thermal Energy Conversion (LTEC);　2011
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2011, 17 - 18
  AUTHOR;　Ikegami Yasuyuki;Morisaki Takafumi
  
• Simulation Model Construction for Level Control of Separator in OTEC Plant;　2011
  ANNOUNCEMENT INFO.;　Record of Joint Conference of Electrical and Electronics Engineers in Kyushu, 2011, 531 - 531
  AUTHOR;　Iseri Daichi;Morisaki Takeshi;Matsuda Yoshitaka;Sugi Takenao;Goto Satoru;Ikegami Yasuyuki
  
• Evaluation for Power Generation System using Low-grade Thermal Energy Conversion;　2010
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2010, 187 - 188
  AUTHOR;　Ikegami Yasuyuki;Goto Hirokazu;Morisaki Takafumi
  
• Influence of temperature difference calculation method on the evaluation of the power cycle performance;　2010
  ANNOUNCEMENT INFO.;　The Proceedings of the Thermal Engineering Conference, 2010, 189 - 190
  AUTHOR;　Morisaki Takafumi;Ikegami Yasuyuki
  
• Simulation Model Construction and Design of Integrated OTEC and Desalination Plant;　2010
  ANNOUNCEMENT INFO.;　Record of Joint Conference of Electrical and Electronics Engineers in Kyushu, 2010, 550 - 551
  AUTHOR;　Iseri Iseri Daichi Daichi;Goto Goto Satoru Satoru;Sugi Sugi Takenao Takenao;Morisaki Morisaki Takashi Takashi;Ikegami IKegami Yasunori Yasunori
  
• Method of evaluating ocean thermal energy conversion system that uses ammonia/water;　2009
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 14, 231 - 234
  AUTHOR;　IKEGAMI Yasuyuki;INADOMI Junichi;GOTO Hirokazu;MORISAKI Takafumi
  
• Experimental research on advantaged performance of OTEC using ammonia/water mixture;　2009
  ANNOUNCEMENT INFO.;　The Proceedings of the National Symposium on Power and Energy Systems, 14, 235 - 238
  AUTHOR;　IKEGAMI Yasuyuki;INADOMI Junihci;GOTO Hirokazu;MORISAKI Takafumi
  

Invited Lecture, Special Lecture

• Heat Transfer Performance Test of A Plate Type Heat Exchanger for Hybrid Ocean Thermal Energy Conversion (OTEC) System;　2021
  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適設計;　2017
  ANNOUNCEMENT INFO.;　
  AUTHOR;