Research Achievements - International conference proceedings -

Field Test-Based Comparative Analysis of Heat Exchange Performance in Vertical and Horizontal Ground Heat Exchanger for Geothermal Applications

Fushiki, Y., Fujii, H., Harada, R., Kosukegawa, H., Mohammadzadeh Bina, S.

Proc., Stanford Geothermal Workshop 2025 ( Stanford University )    1583 - 1590   2025.02

Research paper (international conference proceedings)   Domestic Co-author

Interpretation of the first thermal response test in Central Asian countries

Hikari Fujii, Daizo Ishiyama, Jamshed Rahmatov and Fumiaki Inagaki

Proc., 46th New Zealand Geothermal Workshop     2024.11  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Development of thermal response test equipment applicable to water wells of large diameters

Fujii, H., Tanaka, S., Kosukegawa, H., Harada, R.

Proc., IGSHPA Research Track 2024 ( International Ground Source Heat Pump Association )    143 - 150   2024.05  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

DOI

Field Tests and Numerical Simulation of Thermal Response Test Equipment Applicable to Water Wells of Large Diameters

Tanaka, S., Fujii, H., Kosukegawa, H., Harada, R.

Proc., Stanford Geothermal Workshop 2024 ( Stanford University )    2024.02  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Field tests and numerical simulation of a novel thermal response test equipment for water wells

Tanaka, S., Fujii, H. Kosukegawa, H., Tsuya, S.

Proc., IGSHPA Research Track 2022 ( International Ground Source Heat Pump Association )    104 - 111   2022.12  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

DOI

Potential Mapping of Ground Source Heat Pump Systems Considering Groundwater Pumping

Fujii, H., Yamashita, K., Tsuya, S., Kosukegawa, H.

Proc., IGSHPA Research Track 2022 ( International Ground Source Heat Pump Association )    37 - 43   2022.12  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

DOI

Waterflooding Technique to the Kashkari Oilfield in the North Part of Afghanistan

Mahdi, Z, Abe, K., Naweed, K. S., Fujii, H.

Proc. of 5th International Conference on Chemical Investigation and Utilization of Natural Resource     128 - 134   2021.11  [Refereed]

Research paper (international conference proceedings)   International Co-author

Field Test and Numerical Simulation of Horizontal Ground Heat Exchangers Installed Using Horizontal Directional Drilling

Fujii, H., Tsuya, S., Harada, R., Kosukegawa, H.

Proc. World Geothermal Congress 2020+1     2021.10  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Economic Analysis of Semi-Open Loop Ground Source Heat Pump Systems in Different Parts of Japan

Mohammadzadeh Bina, S., Fujii, H., Tsuya, S., Noorollahi, Y., Farabi, H.

Proc. World Geothermal Congress 2020+1     2021.10  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Field Test and Numerical Simulation for Evaluating an Effect of Ground Surface Coverage on Slinky-Coil Type Horizontal Ground Heat Exchanger

Tsuya, S., Fujii, H., Kosukegawa, H., Mohammadzadeh Bina, S.

Proc. World Geothermal Congress 2020+1     2021.10  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Thermal Response Tests in Thailand

Fujii, H., Kosukegawa, H.

55th CCOP Annual Session     2019.11  [Refereed]  [Invited]

Research paper (international conference proceedings)   Domestic Co-author

Field Test of Horizontal Ground Heat Exchangers installed using Horizontal Directional Drilling Technology

Fujii, H., Tsuya, S., Harada, R., Kosukegawa, H.

Proc. Stanford Geothermal Workshop 2019     922 - 929   2019.02

Research paper (international conference proceedings)   Domestic Co-author

Long-term heating test using the semi-open loop ground source heat pump system

Kosukegawa, H., Fujii, H.

Proc. Stanford Geothermal Workshop 2019     2019.02

Research paper (international conference proceedings)   Domestic Co-author

Numerical Simulation of Slinky-coil Ground Heat Exchangers Installed in Railway Tunnels

Fujii, H., Taniguchi, S., Ogai, K.

Proc. IGSHPA 2nd Research Track     346 - 359   2018.09  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Multi Criteria Decision Analysis of Wind Energy Potential in North Part of Iran

Mohammadzadeh Bina, S., Jalilinasrabady, S., Fujii, H., Farabi-Asl, H., Soltani, N.

Proc. Grand Renewable Energy 2018     2018.06  [Refereed]

Research paper (international conference proceedings)   Single author

Relationship between ground temperature behavior and ground surface coverage in Slinky-coil type horizontal ground heat exchanger

Tsuya, S., Fujii, H., Kosukegawa, H.

Proc. Grand Renewable Energy 2018     2018.06  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

An updated numerical model of the Greater Olkaria geothermal system, Kenya

Rop, E., Fujii, H., Jalilinasrabady, S.

Proc. Stanford Geothermal Workshop     2018.01

Research paper (international conference proceedings)   Domestic Co-author

Characteristics of Pore Structure in Siliceous Shale from the Onnagawa Formation in Japan

Abe, K., Hirose, T., Onishi, K., Fujii, H.

Proc. 13th International Symposium on East Asian Resources Recycling Technology     2015.12  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Numerical modeling of long-term performance of an ATES system

Katsuragi, M., Yamaya, M., Kuronuma, S., Fujii, H., Uchida, Y., Yoshioka, M.

Proc. FEFLOW User Conference 2015     2015.09  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Effect of water injection into a ground heat exchanger drilled in a low-λ formation

Fujii, H., Kosukegawa, H., Onishi, K.

Proc. World Geothermal Congress 2015     2015.04  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Performance expectation of a geothermal heat pump system using a numerical model

Shim, B.O., Park, H.E., Lee, C., Fujii, H.

Proc. World Geothermal Congress 2015     2015.04  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Performance of a drainage trench employed as ground heat exchanger

Bottarelli, M., Fujii, H., Di Federico, V.

Proc. 15th International Heat Transfer Conference     2014.08  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Enhancement of Heat Exchange Capacity of Ground Heat Exchangers by Injecting Water into Wells

Inoue, Y., Itoi, R., Chou, N., Okubo, H., Fujii, H.

Proc. Stanford Geothermal Workshop     2014.01

Research paper (international conference proceedings)   Domestic Co-author

Effects of injecting water into the well on heat exchange rates on vertical ground heat exchangers

Inoue, Y., Itoi, R., Chou, N., Okubo, H. , Chou, N., Fujii, H.

Proc. Int. Symposium on Earth Science & Technology     2013.12  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Numerical modeling of aquifer thermal energy storage system for Optima1 operation scenario

Maehara, T., Fujii, H., Itoi, R., Yamaya, M., Uchida, Y., Yoshioka, M.

Proc. Int. Symposium on Earth Science & Technology     2013.12  [Refereed]

Research paper (international conference proceedings)   Domestic Co-author

Field test of ungrouted ground heat exchangers with in-hole vertical groundwater flow

Maehara, T., Fujii, H., Ioka, S., Watabe, A.

Proc. Stanford Geothermal Workshop 2013     2013.02

Research paper (international conference proceedings)   Domestic Co-author

Numerical modeling of Slinky-coil horizontal heat exchangers considering snow coverage effects

Fujii, H., Yamasaki, S., Maehara, T.

Proc. Stanford Geothermal Workshop 2013     2013.02

Research paper (international conference proceedings)   Domestic Co-author

Development of Water-dissolved Gas in Nishikambara Gas Field and Calculation of Land Subsidence Induced by Water Pumping

Higuma, T., Fujii, H., Horikawa, K.

Proc. SPE Middle East Unconventional Gas Conference and Exhibition     2013.01

Research paper (international conference proceedings)   Domestic Co-author

Evaluation on the Effect of Water Injection on Heat Exchange Rates in Vertical Ground Heat Exchangers

Maehara, Y., Fujii, H., Komaniwa, Y., , Chou, N.

Proc. Int. Symposium on Earth Science & Technology 2012     2012.09

Research paper (international conference proceedings)   Domestic Co-author

History matching of the land subsidence performance in Nishikambara water-dissolved gas field using the numerical reservoir simulation models

Higuma, T., Fujii, H., Horikawa, K.

Proc. Int. Symposium on Earth Science & Technology 2012     2012.09

Research paper (international conference proceedings)   Domestic Co-author

Evaluation on the effect of crossflow of groundwater on heat exchange rates in vertical ground heat exchangers

Inoue, Y., Fujii, Komaniwa, Y., Ioka, S.

Proc. Int. Symposium on Earth Science & Technology 2012     2012.09

Research paper (international conference proceedings)   Domestic Co-author

Groundwater flow and heat transfer modeling to estimate the area suitable for ATES

Yoshioka, M., Uchida, Y., Fujii, H., Yamaya, M.

Proc. FEFLOW User Conference.     2012.09

Research paper (international conference proceedings)   Domestic Co-author

Numerical modeling of long-term performance of an ATES system

Okuyama, K., Fujii, Yamaya, M.

Proc. FEFLOW User Conference.     2012.09

Research paper (international conference proceedings)   Domestic Co-author

Numerical modeling and sensitivity study of Slinky-coil ground heat exchangers

Fujii, H., Yamasaki, S., Maehara

Proc. FEFLOW User Conference.     2012.09

Research paper (international conference proceedings)   Domestic Co-author

Experiments and numerical study on the effects of filling materials in ground heat exchangers

Fujimoto, M., Fujii, H., Komaniwa, Y., Chou, N.

Proc. InnoStock 2012     2012.05

Research paper (international conference proceedings)   Domestic Co-author

Field Tests and Numerical Modeling of Double-layered Straight Horizontal Ground Heat exchangers

Fujii, H., Maehara, T., Komaniwa, Y., Chou, N., Ishikami, T.

Proc. InnoStock 2012     2012.05

Research paper (international conference proceedings)   Domestic Co-author

Development of a Numerical Model of Greenhouses for Estimating Heating and Cooling Load to Minimize Initial Cost of Geothermal Heat Pump Systems

Komaniwa, Y., Iwata, K., Fujii, H., Ishikami, T., Taniguchi, S., Ohshima, K., Chou, N.

Proc. Int. Symposium on Earth Science & Technology 2011     2011.12

Research paper (international conference proceedings)   Domestic Co-author

History Matching of Gas and Iodine Production Performance in Nishikanbara Water-Dissolved Gas Field

Higuma, T., Fujii, H., Horikawa, K.

Proc. Int. Symposium on Earth Science & Technology 2011     2011.12

Research paper (international conference proceedings)   Domestic Co-author

Experiments and numerical study on the effects of filling materials in ground heat exchangers

Fujimoto, M., Fujii, H., Komaniwa, Y., Chou, N.

Proc. Int. Symposium on Earth Science & Technology 2011     2011.12

Research paper (international conference proceedings)   Domestic Co-author

3D numerical simulation of subsurface temperature distribution in Kumamoto Plain for application of geothermal heat pump systems

Nomoto, T., Fujii, H., Uchida, Y., Shimada, J.

Proc. Int. Symposium on Earth Science & Technology 2011     2011.12

Research paper (international conference proceedings)   Domestic Co-author

Experimental consideration on the method of thermal response tests with a double U-tube ground heat exchanger

Komaniwa, Y., Fujii, H., Mori, Y.

Proc. Int. Symposium on Earth Science & Technology 2010     2010.12

Research paper (international conference proceedings)   Domestic Co-author

Improvement of Heat Exchange Rate by Pumping Ground Water in Ground Source Heat Pump System

Yamaguchi, M., Fujii, H., Ohshima, K., Taniguchi, S.

Proc. Int. Symposium on Earth Science & Technology 2010     2010.12

Research paper (international conference proceedings)   Domestic Co-author

3D simulation of groundwater flow system in Kumamoto Plain for application of geothermal heat pump systems

Nomoto, T., Fujii, H., Uchida, Y., Shimada, J.

Proc. Int. Symposium on Earth Science & Technology 2010     2010.12

Research paper (international conference proceedings)   Domestic Co-author

Flash cycle and ORC geothermal power plant optimization combined with district heating system

Jalilinasrabady, S., Itoi, R., Fujii, H., Tanaka, T.

Proc. Int. Symposium on Earth Science & Technology 2010     2010.12

Research paper (international conference proceedings)   Domestic Co-author

Performance Analysis of Geothermal Heat Pumps using Slinky Coil Horizontal Ground Heat Exchangers

Kariya, T., Fujii, H., Komaniwa, Y., Chou, N.

Proc. Int. Symposium on Earth Science & Technology 2010     2010.12

Research paper (international conference proceedings)   Domestic Co-author

Cascade Uses of Geothermal Energy in Sabalan - Iran

Jalilinasrabady, S., Itoi, R., Fujii, H., Tanaka, T.

Proc. World Geothermal Congress 2010     2010.04

Research paper (international conference proceedings)   Domestic Co-author

Energy and Exergy Analysis of Sabalan Geothermal Power Plant, Iran

Jalilinasrabady, S., Itoi, R., Fujii, H., Tanaka, T.

Proc. World Geothermal Congress 2010     2010.04

Research paper (international conference proceedings)   Domestic Co-author

Production Capacity Estimation by Reservoir Simulation of Northwest Sabalan Geothermal Field, Iran,

Noorollahi, Y., Itoi, R., Fujii, H., Tanaka, T.

Proc. World Geothermal Congress 2010     2010.04

Research paper (international conference proceedings)   Domestic Co-author

Field tests of horizontal ground heat exchangers

Fujii, H., Okubo, H., Cho, N., and Ohyama, K.

Proc. World Geothermal Congress 2010     2010.04

Research paper (international conference proceedings)   Domestic Co-author

History matching of production performance in a water-soluble natural gas reservoir

Kato, Y., Fujii, H., Itoi, R., Mitsuda, S.

Proc. Int. Symposium on Earth Science & Technology 2009     2009.12

Research paper (international conference proceedings)   Domestic Co-author

Comparison of geothermal and fuel-fired heating systems in Sabalan, Iran

Jalilinasrabady, S., Itoi, R., Fujii, H., Tanaka, T.

Proc. Int. Symposium on Earth Science & Technology 2009     2009.12

Research paper (international conference proceedings)   Domestic Co-author

Possibility for cost reduction of geothermal heat pump system by improving heat transfer characteristics of buildings

Komaniwa, Y., Fujii, H., Chou, N. , Okubo, H.

Proc. Int. Symposium on Earth Science & Technology 2009     2009.12

Research paper (international conference proceedings)   Domestic Co-author

Numerical modeling of horizontal ground heat exchangers

Nishi, K., Fujii, H., Okubo, H., Kariya, T., Chou, N

Proc. Int. Symposium on Earth Science & Technology 2009     2009.12

Research paper (international conference proceedings)   Domestic Co-author

Optimization of the Sabalan Geothermal Power Plant, Iran, using Exergy Concept

Jalilinasrabady, S., Itoi, R., Fujii, H., Tanaka, T.

Proc. 31st New Zealand Geothermal Workshop     2009.11

Research paper (international conference proceedings)   Domestic Co-author

Application of optical fiber thermometers in thermal response tests for detailed geological descriptions

Fujii, H., Okubo, H., Chono, M., Sasada, M., Takasugi, S. and Tateno, M.

Proc. EFFSTOCK2009     2009.06

Research paper (international conference proceedings)   Domestic Co-author

Interpretation of a thermal response test using fiber optic distributed temperature sensing method

Shim, B.O., Song, Y, Fujii, H. and Okubo, H.

Proc. EFFSTOCK2009     2009.06

Research paper (international conference proceedings)   Domestic Co-author

Field tests of horizontal ground heat exchangers using coil-like tube

Okubo, H., Fujii, H. Itoi., R., Nishi, K., Ohyama, K., and Chou, N.

Proc. 2nd International Symposium of Novel Carbon Resource Science     2009.03

Research paper (international conference proceedings)   Domestic Co-author

Energy and exergy analysis of single flash geothermal power plant, Sabalan, Iran

Jalilinasrabady, S., Itoi, R., Fujii, H. and Tanaka, T.

Proc. 2nd International Symposium of Novel Carbon Resource Science     2009.03

Research paper (international conference proceedings)   Domestic Co-author

Prediction of long-term performance of ground source heat pump in greenhouses

Okubo, H., Fujii, H., Itoi, R

Proc. Int. Symposium on Earth Science & Technology 2008     2008.12

Research paper (international conference proceedings)   Domestic Co-author

Development of a Numerical Model for a Borehole Heat Exchanger System Using Long-term Monitoring Data

Shim, B.O., Fujii, H., Song, Y.H.

Proc. Renewable Energy 2008     2008.10

Research paper (international conference proceedings)   Domestic Co-author

Study on environmental impacts of ground heat disposal through field tests and numerical modeling

Nishi, K., Fujii, H., Ishikami, T., Fujiwara, K.

Proc. Renewable Energy 2008     2008.10

Research paper (international conference proceedings)   Domestic Co-author

Interpretation of Thermal Response Test Using Temperature Profiles in Ground Heat Exchangers

Okubo, H., Fujii, H., Nishi, K., Song, Y.H., Shim, B.O., Shibata, K., Hiromatsu, A.

Proc. Renewable Energy 2008     2008.10

Research paper (international conference proceedings)   Domestic Co-author

Application of Ground Source Heat Pumps for Air-conditioning of Greenhouses

Fujii, H., Ohyama, K., Okubo, H., Itoi R.

Proc. Renewable Energy 2008     2008.10

Research paper (international conference proceedings)   Domestic Co-author

Gas production from methane hydrate deposits by thermal stimulation using geothermal heat source and depressurization

Fujii, H., Wasaki, Y. and Itoi, R.

Proc. 4th Int. Workshop on Earth Science & Technology, Kyushu Univ.     2006.12

Research paper (international conference proceedings)   Domestic Co-author

GIS Model for Geothermal Resources Exploration (GM-GRE) in Sabalan Geothermal Area Northwestern Iran

Noorollahi, Y., Itoi, R., Fujii, H. and Tanaka, T

Proc. 4th Int. Workshop on Earth Science & Technology, Kyushu Univ.     2006.12

Research paper (international conference proceedings)   Domestic Co-author

Energy supply plan using an abandoned deep well in Horonobe, Hokkaido, Japan

Okubo, H., Fujii, H., Mitsuhashi, J. and Ishijima, Y.

Proc. 3rd Int. Workshop on Earth Science & Technology, Kyushu Univ.     2005.12

Research paper (international conference proceedings)   Domestic Co-author

Numerical Simulation of Ground Heat Exchangers in an Abandoned Deep Well using AUTOUGH2

Kurniawan, S.S., Itoi, R. and Fujii, H.

Proc. 3rd Int. Workshop on Earth Science & Technology, Kyushu Univ     2005.12

Research paper (international conference proceedings)   Domestic Co-author

Development of Energy Supply Systems Using Abandoned Deep Wells

Fujii, H., Akibayashi, S. and Itoi, R.

Proc. World Geothermal Congress 2005     2005.04

Research paper (international conference proceedings)   Domestic Co-author

Numerical Modeling of the Momotombo Geothermal Reservoir, Nicaragua

Porras, E., Tanaka, T. Fujii, H. and Itoi, R.

Proc. World Geothermal Congress 2005     2005.04

Research paper (international conference proceedings)   Domestic Co-author

Numerical Analysis of Transient Behaviors of Geothermal Well Deliverability

Khasani, Itoi, R., and Fujii, H.

Proc. World Geothermal Congress 2005     2005.04

Research paper (international conference proceedings)   Domestic Co-author

Predictions of reservoir performances for different scenarios at Momotombo geothermal field

Nicaragua, Proc. 26th Annual PNOC-EDC Conference

Nicaragua, Proc. 26th Annual PNOC-EDC Conference     2005.03

Research paper (international conference proceedings)   Domestic Co-author

Three Dimensional Reservoir Simulation of The Momotombo Geothermal Field, Nicaragua

Porras, E., Itoi, R. Fujii, H. and Tanaka, T.

Proc. 2nd Int. Workshop on Earth Science & Technology, Kyushu Univ.     2004.12

Research paper (international conference proceedings)   Domestic Co-author