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An Experimental and Numerical Case Study of Passive Building Cooling with Foundation Pile Heat Exchangers in Denmark

Author

Listed:
  • Søren Erbs Poulsen

    (R&D Center for Building, Energy, Water and Climate, VIA University College, DK-8700 Horsens, Denmark)

  • Maria Alberdi-Pagola

    (Centrum Pæle A/S, Grønlandsvej 96, DK-7100 Vejle, Denmark)

  • Davide Cerra

    (Department of Civil Engineering and Architecture, University of Pavia, 27100 Pavia, Italy)

  • Anna Magrini

    (Department of Civil Engineering and Architecture, University of Pavia, 27100 Pavia, Italy)

Abstract

Technologies for energy-efficient cooling of buildings are in high demand due to the heavy CO 2 footprint of traditional air conditioning methods. The ground source heat pump system (GSHP) installed at the Rosborg Gymnasium in Vejle (Denmark) uses foundation pile heat exchangers (energy piles). Although designed for passive cooling, the GSHP is used exclusively for heating. In a five-week test during the summer of 2018, excess building heat was rejected passively to the energy piles and the ground. Measured energy efficiency ratios are 24–36 and the thermal comfort in conditioned rooms is improved significantly relative to unconditioned reference rooms. A simple model relating the available cooling power to conditioned room and ground temperatures is developed and calibrated to measured test data. Building energy simulation based estimates of the total cooling demand of the building are then compared to corresponding model calculations of the available cooling capacity. The comparison shows that passive cooling is able to meet the cooling demand of Rosborg Gymnasium except for 7–17 h per year, given that room temperatures are constrained to < 26 °C. The case study clearly demonstrates the potential for increasing thermal comfort during summer with highly efficient passive cooling by rejecting excess building heat to the ground.

Suggested Citation

  • Søren Erbs Poulsen & Maria Alberdi-Pagola & Davide Cerra & Anna Magrini, 2019. "An Experimental and Numerical Case Study of Passive Building Cooling with Foundation Pile Heat Exchangers in Denmark," Energies, MDPI, vol. 12(14), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:14:p:2697-:d:248417
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    References listed on IDEAS

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    1. Alberdi-Pagola, Maria & Poulsen, Søren Erbs & Loveridge, Fleur & Madsen, Søren & Jensen, Rasmus Lund, 2018. "Comparing heat flow models for interpretation of precast quadratic pile heat exchanger thermal response tests," Energy, Elsevier, vol. 145(C), pages 721-733.
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    Cited by:

    1. Tomasz Sliwa & Aneta Sapińska-Śliwa & Tomasz Wysogląd & Tomasz Kowalski & Izabela Konopka, 2021. "Strength Tests of Hardened Cement Slurries for Energy Piles, with the Addition of Graphite and Graphene, in Terms of Increasing the Heat Transfer Efficiency," Energies, MDPI, vol. 14(4), pages 1-20, February.
    2. Natalia Fidorów-Kaprawy & Łukasz Stefaniak, 2022. "Potential of CO 2 Emission Reduction via Application of Geothermal Heat Exchanger and Passive Cooling in Residential Sector under Polish Climatic Conditions," Energies, MDPI, vol. 15(22), pages 1-15, November.
    3. Belen Moreno Santamaria & Fernando del Ama Gonzalo & Danielle Pinette & Roberto-Alonso Gonzalez-Lezcano & Benito Lauret Aguirregabiria & Juan A. Hernandez Ramos, 2020. "Application and Validation of a Dynamic Energy Simulation Tool: A Case Study with Water Flow Glazing Envelope," Energies, MDPI, vol. 13(12), pages 1-20, June.
    4. Søren Erbs Poulsen & Theis Raaschou Andersen & Karl Woldum Tordrup, 2022. "Full-Scale Demonstration of Combined Ground Source Heating and Sustainable Urban Drainage in Roadbeds," Energies, MDPI, vol. 15(12), pages 1-21, June.

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