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Evaluation of estimation method of ground properties for the ground source heat pump system

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  • Hwang, Suckho
  • Ooka, Ryozo
  • Nam, Yujin

Abstract

Technology directed at geothermal energy, one of our renewable energy sources, to heat and air-condition buildings has become very attractive in recent years following the significant developments in ground-source heat pump (GSHP) systems. In general, although the energy efficiency of GSHP systems is far superior to conventional air-source heat pump (ASHP) systems, GSHP system is still expensive. Therefore, GSHP system employs the foundation pile of buildings as heat exchanger is introduced in order to reduce the initial cost. When designing a GSHP system (especially in case of the energy pile system), it is necessary to accurately predict the heat extraction and injection rates of the heat exchanger. The thermal and hydraulic properties of the ground are very important to accurately predict heat transfer between the ground heat exchanger and the ground. In particular, those are the most important design parameters because energy pile system is installed only a few tens of meters deep. In this paper, an estimation method is suggested in order to determine the thermal and hydraulic properties of the ground for design the heat exchanger of energy pile system base on geotechnical investigation for the design the building's foundations. The use of results from generally applied geotechnical site investigation methods to estimate ground thermal and hydraulic properties was evaluated.

Suggested Citation

  • Hwang, Suckho & Ooka, Ryozo & Nam, Yujin, 2010. "Evaluation of estimation method of ground properties for the ground source heat pump system," Renewable Energy, Elsevier, vol. 35(9), pages 2123-2130.
    • Handle: RePEc:eee:renene:v:35:y:2010:i:9:p:2123-2130
    DOI: 10.1016/j.renene.2010.01.028
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    Citations

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    Cited by:

    1. Zhou, Zhihua & Zhang, Zhiming & Chen, Guanyi & Zuo, Jian & Xu, Pan & Meng, Chong & Yu, Zhun, 2016. "Feasibility of ground coupled heat pumps in office buildings: A China study," Applied Energy, Elsevier, vol. 162(C), pages 266-277.
    2. Zhu, Lin & Yu, Jianlin & Zhou, Mengliu & Wang, Xiao, 2014. "Performance analysis of a novel dual-nozzle ejector enhanced cycle for solar assisted air-source heat pump systems," Renewable Energy, Elsevier, vol. 63(C), pages 735-740.
    3. Tordrup, K.W. & Poulsen, S.E. & Bjørn, H., 2017. "An improved method for upscaling borehole thermal energy storage using inverse finite element modelling," Renewable Energy, Elsevier, vol. 105(C), pages 13-21.
    4. Sang Mu Bae & Yujin Nam & Jong Min Choi & Kwang Ho Lee & Jae Sang Choi, 2019. "Analysis on Thermal Performance of Ground Heat Exchanger According to Design Type Based on Thermal Response Test," Energies, MDPI, vol. 12(4), pages 1-16, February.
    5. Choi, Jong Min & Park, Yongjung & Kang, Shin-Hyung, 2013. "Heating performance verification of a ground source heat pump system with U-tube and double tube type GLHEs," Renewable Energy, Elsevier, vol. 54(C), pages 32-39.
    6. Chung, Jin Taek & Choi, Jong Min, 2012. "Design and performance study of the ground-coupled heat pump system with an operating parameter," Renewable Energy, Elsevier, vol. 42(C), pages 118-124.
    7. Li, Min & Lai, Alvin C.K., 2015. "Review of analytical models for heat transfer by vertical ground heat exchangers (GHEs): A perspective of time and space scales," Applied Energy, Elsevier, vol. 151(C), pages 178-191.
    8. Choi, Jong Min & Park, Yong-Jung & Kang, Shin-Hyung, 2014. "Temperature distribution and performance of ground-coupled multi-heat pump systems for a greenhouse," Renewable Energy, Elsevier, vol. 65(C), pages 49-55.
    9. Alcaraz, Mar & García-Gil, Alejandro & Vázquez-Suñé, Enric & Velasco, Violeta, 2016. "Use rights markets for shallow geothermal energy management," Applied Energy, Elsevier, vol. 172(C), pages 34-46.
    10. Zhou, Zhihua & Wu, Shengwei & Du, Tao & Chen, Guanyi & Zhang, Zhiming & Zuo, Jian & He, Qing, 2016. "The energy-saving effects of ground-coupled heat pump system integrated with borehole free cooling: A study in China," Applied Energy, Elsevier, vol. 182(C), pages 9-19.
    11. Wu, Wei & Wang, Baolong & You, Tian & Shi, Wenxing & Li, Xianting, 2013. "A potential solution for thermal imbalance of ground source heat pump systems in cold regions: Ground source absorption heat pump," Renewable Energy, Elsevier, vol. 59(C), pages 39-48.

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