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Modelling Ground Collectors and Determination of the Influence of Technical Parameters, Installation and Geometry on the Soil

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  • Ľubomíra Gabániová

    (Faculty of Mining, Institute of Earth Resources, Ecology, Processing Control and Geotechnology, Technical University of Kosice, Letna 1/9, 040 01 Kosice, Slovakia)

  • Dušan Kudelas

    (Faculty of Mining, Institute of Earth Resources, Ecology, Processing Control and Geotechnology, Technical University of Kosice, Letna 1/9, 040 01 Kosice, Slovakia)

  • Martin Prčík

    (Faculty of European Studies and Regional Development, Institute of Environmental Management, Slovak University of Agriculture in Nitra, Tr. A. Hlinku, 949 76 Nitra, Slovakia)

Abstract

The main objective of this work was to model ground collectors with different parameters and geometries in ANSYS R19.2 and to simulate their operation during the heating season in Slovakia in order to determine their impact on the soil. At the same time, four new geometries in the shape of vertical spirals with diameters of 6, 8 and 10 m were designed and simulated to occupy a smaller area while maintaining performance similar to classical geometries. Due to climate change, heat pumps are becoming an important proxy in the heating of buildings and are an important part of decarbonisation plans; thus, it is essential to adapt them to urban and metropolitan conditions. Ground source heat pumps possess high efficiency but require a lot of space for their collectors. The collector geometries proposed in this work are a combination of horizontal and vertical technologies and are feasible. Only one geometry achieved performance similar to classical geometries: spiral with 10 m diameter. Factors significantly influencing collector operation were confirmed, namely season, soil type, soil water content, geometry and collector placement.

Suggested Citation

  • Ľubomíra Gabániová & Dušan Kudelas & Martin Prčík, 2021. "Modelling Ground Collectors and Determination of the Influence of Technical Parameters, Installation and Geometry on the Soil," Energies, MDPI, vol. 14(21), pages 1-21, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:21:p:7153-:d:669851
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    References listed on IDEAS

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    1. Chong, Chiew Shan Anthony & Gan, Guohui & Verhoef, Anne & Garcia, Raquel Gonzalez & Vidale, Pier Luigi, 2013. "Simulation of thermal performance of horizontal slinky-loop heat exchangers for ground source heat pumps," Applied Energy, Elsevier, vol. 104(C), pages 603-610.
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    3. 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.
    4. Han, Chanjuan & Yu, Xiong (Bill), 2016. "Sensitivity analysis of a vertical geothermal heat pump system," Applied Energy, Elsevier, vol. 170(C), pages 148-160.
    5. Go, Gyu-Hyun & Lee, Seung-Rae & Yoon, Seok & Kim, Min-Jun, 2016. "Optimum design of horizontal ground-coupled heat pump systems using spiral-coil-loop heat exchangers," Applied Energy, Elsevier, vol. 162(C), pages 330-345.
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