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Soil Thermal Balance Analysis for a Ground Source Heat Pump System in a Hot-Summer and Cold-Winter Region

Author

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  • Zhongchao Zhao

    (School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China)

  • Rendong Shen

    (School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China)

  • Weixian Feng

    (School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China)

  • Yong Zhang

    (School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China)

  • Yanrui Zhang

    (School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China)

Abstract

As a renewable and high energy efficiency technology providing air conditioning and domestic hot water, the ground source heat pump system (GSHPS) has been extensively used worldwide in recent years. Compared with conventional systems, GSHPSs with heat recovery reject less heat into the soil and extract more heat from it, which can help reduce soil thermal imbalance in hot-summer and cold-winter regions. In this paper, conventional GSHPS, and GSHPS with different heat recovery ratios, in a typical city were compared based on thermal imbalance ratios, average soil temperatures and soil temperature increases. The transient system simulation software was used to simulate the operation performance of GSHPS. The thermal imbalance ratio and soil temperature decreased with increasing heat recovery ratio. After 20 years of operation, the soil thermal imbalance ratios of the GSHPS were 29.2%, 21.1%, 16%, and 5.2%, and the soil temperature rises were 8.78 °C, 5.25 °C, 3.44 °C, and 0.34 °C, while the heat recovery ratios were 0, 18%, 30% and 53%, respectively. Consequently, a GSHPS with heat recovery is a potentially efficient and economical approach for buildings in hot-summer and cold-winter regions.

Suggested Citation

  • Zhongchao Zhao & Rendong Shen & Weixian Feng & Yong Zhang & Yanrui Zhang, 2018. "Soil Thermal Balance Analysis for a Ground Source Heat Pump System in a Hot-Summer and Cold-Winter Region," Energies, MDPI, vol. 11(5), pages 1-13, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1206-:d:145389
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    References listed on IDEAS

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    Cited by:

    1. Joanna Piotrowska-Woroniak, 2021. "Assessment of Ground Regeneration around Borehole Heat Exchangers between Heating Seasons in Cold Climates: A Case Study in Bialystok (NE, Poland)," Energies, MDPI, vol. 14(16), pages 1-32, August.
    2. Jianan Liu & Hao Yu & Haoran Ji & Kunpeng Zhao & Chaoxian Lv & Peng Li, 2020. "Optimal Operation Strategy of a Community Integrated Energy System Constrained by the Seasonal Balance of Ground Source Heat Pumps," Sustainability, MDPI, vol. 12(11), pages 1-24, June.
    3. Matteo Rivoire & Alessandro Casasso & Bruno Piga & Rajandrea Sethi, 2018. "Assessment of Energetic, Economic and Environmental Performance of Ground-Coupled Heat Pumps," Energies, MDPI, vol. 11(8), pages 1-23, July.
    4. Peng Li & Hsien-Te Lin, 2018. "Study on Application Potential of Seasonal Thermal Energy Storage-Hybrid Ground Source Heat Pump in Taiwan—Taking Experiments in Tainan as Examples," Sustainability, MDPI, vol. 10(6), pages 1-16, May.
    5. Zhao, Zilong & Lin, Yu-Feng & Stumpf, Andrew & Wang, Xinlei, 2022. "Assessing impacts of groundwater on geothermal heat exchangers: A review of methodology and modeling," Renewable Energy, Elsevier, vol. 190(C), pages 121-147.
    6. Wenting Ma & Moon Keun Kim & Jianli Hao, 2019. "Numerical Simulation Modeling of a GSHP and WSHP System for an Office Building in the Hot Summer and Cold Winter Region of China: A Case Study in Suzhou," Sustainability, MDPI, vol. 11(12), pages 1-17, June.

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