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Temperatures and Heat Flows in a Soil Enclosing a Slinky Horizontal Heat Exchanger

Author

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  • Pavel Neuberger

    (Department of Mechanical Engineering, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague-Suchdol, Czech Republic)

  • Radomír Adamovský

    (Department of Mechanical Engineering, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague-Suchdol, Czech Republic)

  • Michaela Šeďová

    (Department of Mechanical Engineering, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Prague-Suchdol, Czech Republic)

Abstract

Temperature changes and heat flows in soils that host “slinky”-type horizontal heat exchangers are complex, but need to be understood if robust quantification of the thermal energy available to a ground-source heat pump is to be achieved. Of particular interest is the capacity of the thermal energy content of the soil to regenerate when the heat exchangers are not operating. Analysis of specific heat flows and the specific thermal energy regime within the soil, including that captured by the heat-exchangers, has been characterised by meticulous measurements. These reveal that high concentrations of antifreeze mix in the heat-transfer fluid of the heat exchanger have an adverse impact on heat flows discharged into the soil.

Suggested Citation

  • Pavel Neuberger & Radomír Adamovský & Michaela Šeďová, 2014. "Temperatures and Heat Flows in a Soil Enclosing a Slinky Horizontal Heat Exchanger," Energies, MDPI, vol. 7(2), pages 1-16, February.
    • Handle: RePEc:gam:jeners:v:7:y:2014:i:2:p:972-987:d:33297
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    References listed on IDEAS

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    1. Tarnawski, V.R. & Leong, W.H. & Momose, T. & Hamada, Y., 2009. "Analysis of ground source heat pumps with horizontal ground heat exchangers for northern Japan," Renewable Energy, Elsevier, vol. 34(1), pages 127-134.
    2. John W. Lund, 2010. "Direct Utilization of Geothermal Energy," Energies, MDPI, vol. 3(8), pages 1-29, August.
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    Cited by:

    1. Arif Widiatmojo & Sasimook Chokchai & Isao Takashima & Yohei Uchida & Kasumi Yasukawa & Srilert Chotpantarat & Punya Charusiri, 2019. "Ground-Source Heat Pumps with Horizontal Heat Exchangers for Space Cooling in the Hot Tropical Climate of Thailand," Energies, MDPI, vol. 12(7), pages 1-22, April.
    2. Pavel Neuberger & Radomír Adamovský, 2019. "Analysis and Comparison of Some Low-Temperature Heat Sources for Heat Pumps," Energies, MDPI, vol. 12(10), pages 1-14, May.
    3. Bryś, Krystyna & Bryś, Tadeusz & Sayegh, Marderos Ara & Ojrzyńska, Hanna, 2020. "Characteristics of heat fluxes in subsurface shallow depth soil layer as a renewable thermal source for ground coupled heat pumps," Renewable Energy, Elsevier, vol. 146(C), pages 1846-1866.
    4. Eloisa Di Sipio & David Bertermann, 2017. "Factors Influencing the Thermal Efficiency of Horizontal Ground Heat Exchangers," Energies, MDPI, vol. 10(11), pages 1-21, November.
    5. Javadi, Hossein & Mousavi Ajarostaghi, Seyed Soheil & Rosen, Marc A. & Pourfallah, Mohsen, 2019. "Performance of ground heat exchangers: A comprehensive review of recent advances," Energy, Elsevier, vol. 178(C), pages 207-233.
    6. Naylor, Shawn & Ellett, Kevin M. & Gustin, Andrew R., 2015. "Spatiotemporal variability of ground thermal properties in glacial sediments and implications for horizontal ground heat exchanger design," Renewable Energy, Elsevier, vol. 81(C), pages 21-30.
    7. Pavel Neuberger & Radomír Adamovský, 2017. "Analysis of the Potential of Low-Temperature Heat Pump Energy Sources," Energies, MDPI, vol. 10(11), pages 1-14, November.
    8. Pavel Pauli & Pavel Neuberger & Radomír Adamovský, 2016. "Monitoring and Analysing Changes in Temperature and Energy in the Ground with Installed Horizontal Ground Heat Exchangers," Energies, MDPI, vol. 9(8), pages 1-13, July.
    9. Krzysztof Neupauer & Sebastian Pater & Krzysztof Kupiec, 2018. "Study of Ground Heat Exchangers in the Form of Parallel Horizontal Pipes Embedded in the Ground," Energies, MDPI, vol. 11(3), pages 1-16, February.
    10. Khaled Salhein & C. J. Kobus & Mohamed Zohdy, 2022. "Control of Heat Transfer in a Vertical Ground Heat Exchanger for a Geothermal Heat Pump System," Energies, MDPI, vol. 15(14), pages 1-24, July.
    11. Zilong Deng & Xiangdong Liu & Yongping Huang & Chengbin Zhang & Yongping Chen, 2017. "Heat Conduction in Porous Media Characterized by Fractal Geometry," Energies, MDPI, vol. 10(8), pages 1-14, August.
    12. Paul L. Younger, 2015. "Geothermal Energy: Delivering on the Global Potential," Energies, MDPI, vol. 8(10), pages 1-18, October.

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