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Improved underground heat exchanger by using no-dig method for space heating and cooling

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  • Hamada, Yasuhiro
  • Nakamura, Makoto
  • Saitoh, Hisashi
  • Kubota, Hideki
  • Ochifuji, Kiyoshi

Abstract

This paper describes experiments and analyses on an improved underground heat exchanger by using a no-dig method for the purpose of the cost reduction of a space heating and cooling system using underground thermal energy. First, the improved underground heat exchanger was installed on the campus of Hokkaido University, and it was shown that a ground source heat pump system utilizing the heat exchanger was sufficient for space heating and cooling. Second, evaluation program of the heat exchanger was developed, and the program was verified to give good predictions by comparing with experimental results. As a result of system simulations, an energy reduction for a system installation relative to a conventional vertical earth heat exchanger reached 78%. The primary energy reduction rate including the system installation and operation relative to a typical air source heat pump was 29%.

Suggested Citation

  • Hamada, Yasuhiro & Nakamura, Makoto & Saitoh, Hisashi & Kubota, Hideki & Ochifuji, Kiyoshi, 2007. "Improved underground heat exchanger by using no-dig method for space heating and cooling," Renewable Energy, Elsevier, vol. 32(3), pages 480-495.
  • Handle: RePEc:eee:renene:v:32:y:2007:i:3:p:480-495
    DOI: 10.1016/j.renene.2006.01.020
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    References listed on IDEAS

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    1. Hamada, Yasuhiro & Nakamura, Makoto & Ochifuji, Kiyoshi & Yokoyama, Shintaro & Nagano, Katsunori, 2003. "Development of a database of low energy homes around the world and analyses of their trends," Renewable Energy, Elsevier, vol. 28(2), pages 321-328.
    2. Hamada, Yasuhiro & Marutani, Kaoru & Nakamura, Makoto & Nagasaka, Shigeyuki & Ochifuji, Kiyoshi & Fuchigami, Shigeki & Yokoyama, Shintaro, 2002. "Study on underground thermal characteristics by using digital national land information, and its application for energy utilization," Applied Energy, Elsevier, vol. 72(3-4), pages 659-675, July.
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    Cited by:

    1. Karytsas, Spyridon & Choropanitis, Ioannis, 2017. "Barriers against and actions towards renewable energy technologies diffusion: A Principal Component Analysis for residential ground source heat pump (GSHP) systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 78(C), pages 252-271.
    2. Rachana Vidhi, 2018. "A Review of Underground Soil and Night Sky as Passive Heat Sink: Design Configurations and Models," Energies, MDPI, vol. 11(11), pages 1-24, October.
    3. Bisoniya, Trilok Singh & Kumar, Anil & Baredar, Prashant, 2013. "Experimental and analytical studies of earth–air heat exchanger (EAHE) systems in India: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 19(C), pages 238-246.
    4. Luo, Jin & Zhang, Qi & Liang, Changming & Wang, Haiqi & Ma, Xinning, 2023. "An overview of the recent development of the Ground Source Heat Pump (GSHP) system in China," Renewable Energy, Elsevier, vol. 210(C), pages 269-279.
    5. Paolo Maria Congedo & Caterina Lorusso & Maria Grazia De Giorgi & Riccardo Marti & Delia D’Agostino, 2016. "Horizontal Air-Ground Heat Exchanger Performance and Humidity Simulation by Computational Fluid Dynamic Analysis," Energies, MDPI, vol. 9(11), pages 1-14, November.
    6. Pulat, Erhan & Coskun, Salih & Unlu, Kursat & Yamankaradeniz, Nurettin, 2009. "Experimental study of horizontal ground source heat pump performance for mild climate in Turkey," Energy, Elsevier, vol. 34(9), pages 1284-1295.

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