2013 Fiscal Year Final Research Report
Mitigation of heat island phenomena by the application of heat disposal system to aquifers
| Project/Area Number |
23246155
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Akita University (2013)
Kyushu University (2011-2012) |
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Principal Investigator |
FUJII Hikari 秋田大学, 工学(系)研究科(研究院), 教授 (80332526)
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| Co-Investigator(Kenkyū-buntansha) |
UCHIDA Youhei 産業技術総合研究所, 福島再生可能エネルギー研究所, 研究チーム長 (90356577)
MURAOKA Hirofumi 弘前大学, 北日本新エネルギー研究所, 教授 (20358146)
IOKA Seiichirou 弘前大学, 北日本新エネルギー研究所, 准教授 (40598520)
YOSHIOKA Mayumi 産業技術総合研究所, 福島再生可能エネルギー研究所, 研究員 (10575492)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 地中熱利用 / 地下水 / 注水 / 数値シミュレーション / サーマルレスポンス試験 |
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| Research Abstract |
Field tests were carried out at four locations of various geological settings to enhance the heat exchange rate at ground heat exchangers in ground source heat pump systems by generating artificial groundwater flow, i.e., cross flow or water injection. The field tests showed that the cross flow and the water injection of approximately 5 L/min remarkably enhance the heat exchange rates. A sensitivity study using a groundwater simulator showed that the excessive water injection rate wastes water resources and the injection rate of 1-5 L/min is ,ost cost-effective. The study also showed that the temperature of the injected water should be close to the ground temperature to improve the energy efficiency.
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Research Products
(55 results)
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[Journal Article] Effects of injecting water into the wel1 0n heat exchange rates on vertical ground heat exchangers2013
Author(s)
Inoue, Y., Itoi, R., Chou, N., Okubo, H. , Chou, N., Fujii, H.
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Journal Title
Proc. Int. Symposium on Earth Science & Technology 2013
Pages: 262-267
Peer Reviewed
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[Journal Article] Numerical modeling of aquifer thermal energy storage system for Optima1 operation scenario2013
Author(s)
Maehara, T., Fujii, H., Itoi, R., Yamaya, M., Uchida, Y., Yoshioka, M.
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Journal Title
Proc. Int. Symposium on Earth Science & Technology 2013
Pages: 366-374
Peer Reviewed
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[Journal Article] Development of a Numerical Model of Greenhouses for Estimating Heating and Cooling Load to Minimize Initial Cost of Geothermal Heat Pump Systems2011
Author(s)
Komaniwa, Y., Iwata, K., Fujii, H., Ishikami, T., Taniguchi, S., Ohshima, K., Chou, N.
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Journal Title
Proc. Int. Symposium on Earth Science & Technology 2011
Pages: 529-532
Peer Reviewed
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[Presentation] Field Tests and Numerical Modeling of Double-layered Straight Horizontal Ground Heat exchangers2012
Author(s)
Fujii, H., Maehara, T., Komaniwa, Y., Chou, N., Ishikami, T.
Organizer
InnoStock 2012
Place of Presentation
Llieda, Spain
Year and Date
2012-05-01
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[Presentation] Development of a Numerical Model of Greenhouses for Estimating Heating and Cooling Load to Minimize Initial Cost of Geothermal Heat Pump Systems2011
Author(s)
Komaniwa, Y., Iwata, K., Fujii, H., Ishikami, T., Taniguchi, S., Ohshima, K., Chou
Organizer
International Symposium on Earth Science and Technology 2011
Place of Presentation
Fukuoka
Year and Date
2011-12-01
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