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Yoshinori Hamamoto Last modified date:2023.11.22

Associate Professor / Thermal Engineering
Department of Mechanical Engineering
Faculty of Engineering


Graduate School
Undergraduate School


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Homepage
https://kyushu-u.elsevierpure.com/en/persons/yoshinori-hamamoto
 Reseacher Profiling Tool Kyushu University Pure
http://therme.mech.kyushu-u.ac.jp/index-j.html
Thermal energy conversion laboratory (in Japanese)
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Phone
092-802-3122
Fax
092-802-3125
Academic Degree
Dr. of Engineering
Field of Specialization
Thermal engineering
Total Priod of education and research career in the foreign country
01years02months
Outline Activities
Research:
- Vapor adsorption to the adsorbrnt controlled pore diameter
- Regeneration potential of a desiccant rotor with direct heating by solar energy
- Development of the heat driven sorption refrigerating and air conditioning cycle
- Evaporation of a droplet
Education:
Experiments and seminars in thermal engineering and energy system
Social activities:
We conduct joint researches regarding the waste heat and renewable energy utilizing heat pump and the element technology.
Research
Research Interests
  • Heat and mass transfer in the evaporating droplet on a substance
    keyword : Evaporation, droplet, flow
    2010.04.
  • Development of simulator for the temperature distribution in a heating furnace
    keyword : Temperature disribution, prediction
    2009.03.
  • Effect of CO2 reduction with thermal insulating material
    keyword : Thermal insulating material, CO2, Reduction
    2008.02CO2 reduction effect with heat insulating material.
  • Boiling and condensation heat transfer for refrigerants flowing in micro scale tube
    keyword : Micro scale tube, Boiling, Condensation
    2007.04Boiling and condensation heat transfer for refrigerants flowing in micro scale tube.
  • Measurement of absorptivity and emissivity of adsorbent material for development of an adsorption humidity control system
    keyword : Adsorption, humidity control, absorptivity of ray
    2007.04Measurement of absorptivity and emissivity of adsorbent material for development of an adsorption humidity control system.
  • Measurements of thermal properties on porous materials
    keyword : Porous material, Thermal conductivity, Specific heat, Void fraction
    2006.04Measurements of thermal properties on porous materials.
  • Development of simulation model for hydrogen absorption/dedorption in the metal hydride packed beds
    keyword : Metal hydride, Packed bed, Effective thermal conductivity, Exothermic/Endothermic reaction, Hydrogen storage
    2005.04Development of simulation model for hydrogen absorption/dedorption in the metal hydride packed beds.
  • Two phase flow characteristics of micro scale porous materials
    keyword : Porous material, Two phase flow, Pressure drop, Permeability
    2005.04Two phase flow characteristics of micro scale porous materials.
  • Study on a vapor adsorption using pore size controlled adsorbents, and waste thermal energy conversion systems
    keyword : Waste thermal energy, Energy conservation, Adsorption, Desorption, Heat and mass transfer coefficients, Humidity control
    2005.03Study on a vapor adsorption for pore size controlled adsorbents, and waste thermal energy conversion systems.
  • Development of a vapor adsorbent with metal processing technology
    keyword : Metal, Adsorbent, Processing technology
    2002.12Development of a vapor adsorbent with metal processing technology.
  • An investigation of thermal energy potential in a fermenting process
    keyword : Heat of fermentation, Thermal energy potential, Energy conversion
    2002.12~2005.02An investigation of thermal energy potential in a fermenting process.
  • Performance analysis of a desiccant hybrid air-conditioning system
    keyword : Performance analysis, Desiccant, Hybrid, Air-conditioning system
    2000.04Performance analysis of a desiccant hybrid air-conditioning system.
  • Heat and mass transfer analysis in a desiccant rotor
    keyword : Heat and mass transfer, Desiccant rotor
    2000.04Heat and mass transfer analysis in a desiccant rotor.
  • Development of advanced adsorption refrigerators and performance evaluation of adsorbent heat exchangers
    keyword : Advanced adsorption refrigerators, Performance evaluation, Adsorbent heat exchanger, Performance improvement
    2000.04Development of advanced adsorption refrigerators and performance evaluation of adsorbent heat exchangers.
  • Experiments and numerical analysis of a bubble absorption process
    keyword : Experiment, Numerical analysis, Bubble, Absorption
    2000.04~2004.03Experiments and numerical analysis of a bubble absorption process.
  • Study on heat and mass transfer in adsorbent packed beds
    keyword : Heat and mass transfer, Adsorption, Packed bed
    1995.04~2000.03Study on heat and mass transfer in adsorbent packed beds.
Current and Past Project
  • Research program "Development of Light Water Cooled Super Fast " has been conducted as a JST project in FY2011.
Academic Activities
Books
1. Bidyut Baran Saha, Yoshinori Hamamoto, Sivasankaran Harish, Kyaw Thu, Kazushi Miyata, Hiroaki Watanabe , Proceedings of the 5th International Conference on Polygeneration (ICP2019), Midori Printing, 2019.05.
2. Yoshiaki Oka, Hideo Mori ;Editors, Hideo Mori, Yoshinori Hamamoto, Supercritical-Pressure Light Water Cooled Reactors, Springer, Section 3.1.5 and 3.1.6 pp285-291, 2014.06.
3. Bidyut Baran Saha, Michihisa KOYAMA, Yasuyuki Takata, Yoshinori Hamamoto, Takahiko Miyazaki, Masamichi Kohno, Kohei Ito, Innovative Materials for Processes in Energy Systems (Chemical Science & Engineering Series 3), Touka Shobo, 2013.09.
4. A revised edition, Desiccant Air-conditioning System, Chap.2 and Chap.5, pp.14-36, pp.122-168.
5. Handbook of Energy, Chapter1 1.1, 1.4, Chapter4 4.3.
6. Energy storage and transportation, 3.Chap.4.1, pp.260-272.
Reports
1. Bidyut Baran Saha, Yoshinori Hamamoto, Guest Editorial: Special issue on the 5th International Conference on Polygeneration 2019, Applied Thermal Engineering, vol.190 (2021) 116853, 10.1016/j.applthermaleng.2021.116853, 2021.03.
2. 濱本 芳徳, 高田 保之, Selected Papers from the International Symposium on Innovative Materials for Processes in Energy Systems 2013 (IMPRES2013): Part II, Heat Transfer Engineering, vol.37, Issue 7-8, pp.684-685, 2016.05.
3. Heating Piping & Air Conditioning Vol.53 No.11, pp.2-6, 2015.09.
Papers
1. Takafumi OUCHI, Yoshinori HAMAMOTO, Hideo MORI, Influence of elapsed time on adsorption equilibrium of water vapor to silica gel film, Chemical Engineering Research and Design, 10.1016/j.cherd.2022.12.014, 190, 704-714, 2023.02.
2. Yoshinori HAMAMOTO, Thermodynamic Analysis of Adsorption Heat Transformer Cycle using Low Heat Capacity Adsorption Reactor and a Proposal of Heat Recovery, Trans. of the Japan Society of Refrigerating and Air Conditioning Engineers, 10.11322/tjsrae.21-45DE_OA, 39, 1, 97-104, 2022.03.
3. Yoshinori Hamamoto, Takehiro Nakamori, Hideo Mori, Measuring of isothermal water vapor adsorption/desorption rate using QCM method and its mass transfer resistance of a layer coated with silica-gel micro particles in a moist air, International Journal of Refrigeration, 10.1016/j.ijrefrig.2019.03.003, 105, 11-18, 2019.09, A quartz crystal microbalance (QCM) technique was used to measure amounts of adsorbed and desorbed water vapor in a moist air to a thin layer of adsorbent consolidated with silica-gel micro particles on the quartz crystal coated with thin gold electrodes. First, measured relative isothermal equilibrium adsorption was confirmed to reproduce the catalogue data of the silica gel. Then, the adsorption and desorption rates to the layer were measured under a condition of a step change of the surrounding relative humidity. Overall mass transfer resistance which related to both the mass diffusion in the particle and the mass transfer in the boundary layer was revealed by the obtained time constants of these reactions. The resistance decreased with the increase of the velocity, and it became a negligible quantity in the boundary layer when the flow rate was above 0.1 m s−1. Finally, correlations were proposed to predict these resistances..
4. Jie Li, Yoshinori Hamamoto, Hideo Mori, Zhan Wang, Study of solar irradiation distribution in narrow channel of desiccant rotor, AIP Advances, 10.1063/1.5100879, 9, 7, 075223, 2019.07, The objective of this paper is to present experimental results on distribution characteristics of solar irradiation absorbed by the narrow channel wall of desiccant rotor. Experiments are performed with the channel made by the silica gel and the poly propylene (PP). Energy absorption rate is measured in conditions of different channel lengths, incident irradiation angles, air temperatures, and humidity. The result of the present measurement for silica gel is equal to that of the previous study [J. Li, Y. Hamamoto, and H. Mori, Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers 32(2), 149-154 (2015)], which is conducted using laser light as a source. It is confirmed the previous prediction model of laser light is suitable for this solar light system. Moreover, the previous model is improved, because the rate of laser for PP is larger than that of solar. These models are applicable to predict desorption rate of the water vapor in a desiccant rotor heated directly by the concentrated solar irradiation. The results show that the absorption rates of solar irradiation and red laser are equal to each other in the silica gel channel. The absorption rates of the laser irradiation are larger than that of the solar irradiation for PP materials. It is clear that the solar irradiation absorption rate cannot be influenced by the ambient humidity and temperature. The prediction model of the absorption efficiency based on the laser for silica gel channel can reproduce well the absorption efficiency of experiment based on solar irradiation. In the case of PP, the difference between the prediction and the measurement is observed..
5. Jie LI, Yoshinori HAMAMOTO, Hideo MORI, Experiment of water vapor adsorption/desorption rate in a desiccant rotor regenerated directly by concentrated artificial solar light irradiation, Journal of Thermal Science and Technology, 10.1299/jtst.2017jtst0037, 12, 2, JTST0037-1-JTST0037-11, 2017.12.
6. Jie LI, Yoshinori HAMAMOTO, Hideo MORI, Measurement and Prediction of Absorbed Irradiation Energy Distribution in Narrow Channel of Desiccant Rotor, Trans. of the Japan Society of Refrigerating and Air Conditioning Engineers, 10.11322/tjsrae.15-02_OA, 32, 2, 149-154, 2015.03.
7. Takafumi Ouchi, Yoshinori Hamamoto, Hideo Mori, Shou Takata, Atsuroh Etoh, Water vapor adsorption equilibrium and adsorption/desorption rate of porous alumina film adsorbent synthesized with anodization on heat transfer plate, Applied Thermal Engineering, 72, 2, 219-228, 2014.06.
8. Takagumi OHUCHI, Yoshinori HAMAMOTO, Hideo MORI and Atsushi ETOH, Measurement of Thermal Resistance of an Adsorbent Coated on Heat Transfer Plate and Comparison of the Resistance with an Adsorbent Particle Packed Bed, Trans. of the Japan Society of Refrigerating and Air Conditioning Engineers, Vol.30, No.4, pp.439-447, 2013.
9. Koji ENOKI Hideo MORI Kazushi MIYATA Yoshinori HAMAMOTO, Flow Patterns of the Vapor-liquid Two-phase Flow in Small Tubes, Trans. of the Japan Society of Refrigerating and Air Conditioning Engineers, Vol.30, No.2, pp.155-167, 2013.
10. Koji Enoki, Kazushi Miyata, Hideo Mori, Keishi Kariya, Yoshinori Hamamoto, Boiling Heat Transfer and Pressure Drop of a Refrigerant Flowing Vertically Upward in Small Rectangular and Triangular Tubes, Heat Transfer Engineering, 10.1080/01457632.2012.753576, 34, 11-12, 966-975, 2013.03.
11. Hideo Mori, Takenobu KAIDA, 大野 正規, Suguru YOSHIDA, Yoshinori Hamamoto, Heat Transfer to a Supercritical Pressure Fluid Flowing in Sub-bundle Channelss, Journal of Nuclear Science Technology (J. Nucl. Sci. Technol.), 49, 4, 373-383, 2012.04.
12. Yoshinori Hamamoto, John R. E. Christy, Khellil Sefiane, The Flow Characteristics of an Evaporating Ethanol Water Mixture Droplet on a Glass Substrate, Journal of Thermal Science and Technology (JTST), 7, 3, 425-436, 2012.05.
13. John R. E. Christy, Yoshinori Hamamoto, and Khellil Sefiane, Flow Transition within an Evaporating Binary Mixture Sessile Drop, Physical Review Letters, 10.1103/PhysRevLett.106.205701, 106, 20, 205701(4), 2011.05.
14. Yoshinori Hamamoto, John R. E. Christy, and Khellil Sefiane, Order-of-magnitude increase in flow velocity driven by mass conservation during the evaporation of sessile drops, Physical Review E, 10.1103/PhysRevE.83.051602, 83, 5, 051602(5), 2011.05.
15. S.S. Elsayed, T. Miyazaki, Y. Hamamoto, A. Akisawa and T. Kashiwagi, Performance analysis of air cycle refrigerator integrated desiccant system for cooling and dehumidifying warehouse, Int. J. of Refrigeration, Vol.31, No.2, pp.189-196 , 2008.03.
16. Yoshinori HAMAMOTO, Hideo MORI, Masazumi GODO, Kunio MIURA, Yutaka WATANABE, Toshihiko ISHIZAWA and Takeshi TAKATSUKA, Overall Heat and Mass Transfer Coefficient of Water Vapor Adsorption -2nd Report: Transfer Coefficient for Adsorbent Rotor Blocks-, Trans. of the Japan Society of Refrigerating and Air Conditioning Engineers, Vol.24, No4, pp. 473-484, 2007 .
17. Yoshinori HAMAMOTO, Kohei FURUYA, Kazushi MIYATA, Measurement of Time Constants of Water Vapor Adsorption Reaction on a Consolidated Silica-gel micro particles using QCM method, Proceedings of the International Sorption Heat Pump Conference 2020 (ISHPC2020), 2020.07.
18. Yoshinori Hamamoto, Hideo Mori, Influence of heat capacity of adsorbent heat exchanger on cooling and heating energy suppy from adsorption chiller driben by solar thermal energy, Proc. of the Fifth IIR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants (TPTPR2017), 10.18462/iir.tptpr.2017.0109, 1-8, 2017.04.
19. Yoshinori Hamamoto, Keisuke Teshima, Hideo Mori, Estimation of local heat transfer coefficients for laminar flow in a desiccant rotor with distributions of heat flux, Proc. of the 4th International Forum on Heat Transfer (IFHT2016), 1-6, IFHT2016-1972, 2016.11.
20. Yoshinori Hamamoto, Jie Li, Hideo Mori, Influence of regeneration air conditions on desorption rate for a desiccant rotor with a comparison of heating process between concentrated solar irradiation and heated air, Proc. of the IVth International Symposium on Innovative Materials for Processes in Energy Systems 2016 (IMPRES2016), 63-64, 2016.10.
21. Yoshinori Hamamoto, Takehiro Nakamori, Hideo Mori, MEASUREMENT OF WATER VAPOR ADSORPTION RATE OF FILM LAYER COATED WITH SILICA-GEL MICRO PARTICLES USING QCM METHOD, Proc. of the 27th International Symposium on Transport Phenomena (ISTP27), 1-5, ISTP27-135, 2016.09.
22. Yoshinori Hamamoto, Takafumi Ouchi, Hideo Mori, MEASUREMENT OF EQUILIBRIUM ADSORPTION AND ADSORPTION/DESORPTION RATE OF WATER VAPOR TO A SILICA GEL THIN FILM COATED ON A CROSS FIN TUBE HEAT EXCHANGER, Proc. of the 8th Asian Conference on Refrigeration and Air Conditioning (ACRA2016), 1-4, ACRA2016-00137, 2016.05.
Presentations
1. Yoshinori HAMAMOTO, Proposal and Performance Prediction of High-temperature Heat Output System of Solar Heat Collector Combined with Adsorption Heat Transformer Cycle, Grand Renewable Energy 2022 International Conference (GRE2022), 2022.12.
2. Performance prediction of adsorption heat transformer cycle using low heat capacity adsorption reactor,Yoshinori HAMAMOTO and Yuma ADACHI, JSRAE 2020 Conf..
3. Yoshinori HAMAMOTO, Smart Energy Utilization Plant Factory mainly for cultivation of leafy vegetables, International Conference on Porigeneration 2019(ICP2019), 2019.05.
4. Yu YAMASHITA, Yoshinori HAMAMOTO, Kazushi MIYATA, Potential Evaluation of Heat Exchange and Prediction of Water Absorbing Rate of a Fin Tube Heat Exchanger Flocked by Rayon Fibers, International Conference on Porigeneration 2019(ICP2019), 2019.05.
5. Yusuke NAKAMURA, Yoshinori HAMAMOTO, Kazushi MIYATA, Influence of Air Flow Velocity on Equivalent Mass Transfer Coefficient for A Desiccant Rotor Regenerated by Concentrated Solar Irradiation, International Conference on Porigeneration 2019(ICP2019), 2019.05.
6. Yuma ADACHI, Yoshinori HAMAMOTO, Kazushi MIYATA, Measurement of Water Vapor Adsorption Rate of Consolidated Silica-gel Particle Layer on a Commercially Available Heat Exchanger, International Conference on Porigeneration 2019(ICP2019), 2019.05.
7. Kohei FURUYA, Yoshinori HAMAMOTO, Kazushi MIYATA, Measurement of Time Constants for Water Vapor Adsorption Rate to Silica-gel Micro Particles below Atmospheric Pressure by Using a Quartz Crystal Microbalance, International Conference on Porigeneration 2019(ICP2019), 2019.05.
8. Simulation for Prediction of Temperature, Pressure Distribution, and Hydrogen Desorption Reaction Rate in a Packed Bed of Hydrogen Storage Material, Keita MOCHIHARA, Yoshinori HAMAMOTO, Kazushi MIYATA, JSME Kyushu Conf..
9. A Study on Distribution of Heat Generation in a Sheet of Heat Spreader, Wataru NOBORITATE, Kazushi MIYATA,Yoshinori HAMAMOTO, JSME Kyushu Conf..
10. Yoshinori HAMAMOTO, Hideo MORI, Comparison of Annual Cooling and Heating Supply Energy from Adsorption Refrigeration and Heat Pump System Driven by Solar Thermal Energy between FAM-Z01 and Z02, GRAND RENEWABLE ENERGY 2018 (GRE2018), 2018.06.
11. Yoshinori HAMAMOTO, Takehiro NAKAMORI, Hideo MORI, Mass transfer resistance of silica-gel micro particles adsorbing/desorbing water vapor in a flowing moist air, International Sorption Heat Pump Conference 2017 (ISHPC2017), 2017.08.
12. Yoshinori HAMAMOTO, Keisuke TESHIMA, Kazushi MIYATA, Hideo MORI, Influence of local heat transfer coefficient along a channel on dehumidification rate in a desiccant rotor regenerated by concentrated solar irradiation, International Sorption Heat Pump Conference 2017 (ISHPC2017), 2017.08.
13. Yoshinori Hamamoto, Hideo Mori, Influence of heat capacity of adsorbent heat exchanger on cooling and heating energy suppy from adsorption chiller driben by solar thermal energy, the Fifth IIR International Conference on Thermophysical Properties and Transfer Processes of Refrigerants, 2017.04.
14. Yoshinori Hamamoto, Keisuke Teshima, Hideo Mori, Estimation of local heat transfer coefficients for laminar flow in a desiccant rotor with distributions of heat flux, the 4th Intl. Forum on Heat Transfer, 2016.11.
15. Yoshinori Hamamoto, Jie Li, Hideo Mori, Influence of regeneration air conditions on desorption rate for a desiccant rotor with a comparison of heating process between concentrated solar irradiation and heated air, the IVth Intl. Symposium on Innovative Materials for Processes in Energy Systems 2016, 2016.10.
16. Jie Li, Yoshinori Hamamoto, Hideo Mori, 松本 駿介, Numerical simulation and experiment regarding the prediction of dehumidifying rate in a desiccant rotor regenerated directly by concentrated solar irradiation, 日本機械学会熱工学コンファレンス2015, 2015.10.
17. Jie Li, Yoshinori Hamamoto, Hideo Mori, MEASUREMENT AND A MODEL OF ABSORBED ENERGY DISTRIBUTION FOR NUMERICAL SIMULATION IN A DESICCANT ROTOR REGENERATED BY CONCENTRATED SOLAR IRRADIATION, GRAND RENEWABLE ENERGY 2014, 2014.07.
18. Yoshinori Hamamoto, Hideo Mori, Atsuroh Etoh, Keishi Kariya, Koshiro Seki, Hiroki Tanoue, MEASUREMENT AND PREDICTION OF THE EFFECTIVE THERMAL CONDUCTIVITY IN A PACKED BED OF METAL HYDRIDE CONSIDERING THE EXPANSION AND CONTRACTION, the Intl. Symposium on Innovative Materials for Processes in Energy Systems 2013, 2013.09.
19. A Model of Absorbed Energy Distribution and Numerical Simulation of Dehumidifying Performance in a Desiccant Rotor Regenerated by Concentrated Solar Irradiance, Yoshinori HAMAMOTO and Hideo MORI
.
20. The flow characteristics of an evaporating ethanol water mixture droplet on a glass, Hamamoto, Y. Christy, J. and Sefiane, K.
.
21. Experiments of an evaluation for fin effect on flocked fiber surface and heat transfer coefficient of flocked cross-fin tube heat exchanger, Hamamoto, Y., Yajima, T., Etoh, A. and Mori, H..
22. Y. Hamamoto and H. Mori, Numerical Simulation of Heat and Mass Transfer in a Desiccant Rotor Regenerated by Concentrated Solar Irradiance, IIR 3rd Conference on Thermophysical Properties and Transport Processes of Refrigerants, IIR-160, Boulder, CO, U.S.A., (25, June, 2009).
23. Hideo MORI, Yoshinori HAMAMOTO and Masaki OHNO, Experimental Study for Research and Development of a Super Fast Reactor (2) Oscillatory Condensation of High Temperature Vapor Directly Discharged into Sub-cooled Liquid Pool, 2009 International Congress on Advances in Nuclear Power Plants (ICAPP09), Paper No.9369, Tokyo, JAPAN, (13, May, 2009)..
24. Yoshinori Hamamoto, Hideo Mori, Takahumi Akai, and Tadafumi Mitani, Measurement of emissivity of water vapor adsorbents with infrared radiation thermometer, 45th Natinoal Heat Transfer Symposium of Japan 2009, Kyoto (June, 2008)..
25. Y. Hamamoto, H. Mori and F. Matsuoka, PERFORMANCE ANALYSIS OF ROTARY DEHUMIDIFIER/HUMIDIFIER AND SYSTEMS 4th Report: The experimental results of dehumidification and the performance evaluation method, 2007 JSRAE Annual Conf., Tokyo (Oct., 2007).
.
26. HAMAMOTO, Y., MORI, H., GODO, M., MIURA, K., WATANABE, Y., ISHIZAWA, T., OKAZAKI, N. and TAKATSUKA, T., Study on Energy Saving Air-Conditioning System Using Compact Desiccant Ventilation Units Part 11: Overall heat and mass transfer coefficient of adsorbents, 41st Japanese Joint Conf. on Air-conditioning and Refrigeration, JSME (April, 2007)..
27. Hamamoto, Y, Independent Control Technology of Latent and Sensible Heat, Tech. Seminar of JSRAE West Japan, JSRAE, pp.1-11, 2007..
28. Hamamoto, Y., Mori, H. and Matsuoka, F., Performance Analysis of Rotary Dehumidifier/Humidifier and Systems 3rd Report: A simple method for the performance evaluation, Proc. 2006 JSRAE Annual Conf., JSRAE, A106, 2006..
Membership in Academic Society
  • The Japan Society of Mechanical Engineers
  • The Heat Transfer Society of Japan
  • The Japan Society of Refrigeration and Air Conditioning Engineers
  • The Society of Heating,Air-Conditioning and Sanitary Engineers of Japan
  • Atomic Energy Society of Japan
Educational
Educational Activities
Undergraduate students:
For understanding the basic phenomena of heat and mass transfer in energy conversion systems, I take classes for
- Thermal Energy Conversion II
- Laboratory in Mechanical Engineering I
- Heat Transfer

Graduate students:
For understanding the advanced analysis technology in the thermal energy systems, I take a class for
- Advanced Thermal Science and Engineering
Social
Professional and Outreach Activities
July, 2001 - : Working menber, JSRAE, Research of the next generation refrigeration systems
Dec., 2002 - Oct., 2003: Working menber, JIE, Research on SuCCEED
Nov., 2003 - March, 2004: Working menber, JIE, Research of a regional energy system
Apr., 2002 - : Working menber, HPTCJ, Research of the thermal energy utilizing technology.