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Applicability Evaluation of Energy Slabs Installed in an Underground Parking Lot

Author

Listed:
  • Seokjae Lee

    (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea)

  • Sangwoo Park

    (Department of Civil Engineering and Environment Sciences, Korea Military Academy, Seoul 01805, Republic of Korea)

  • Taek Hee Han

    (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea)

  • Jongmuk Won

    (Department of Civil and Environmental Engineering, University of Ulsan, Ulsan 44610, Republic of Korea)

  • Hangseok Choi

    (School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Republic of Korea)

Abstract

A floor slab of buildings can be used as a ground heat exchanger by equipping heat exchange pipes with a horizontal layout, namely energy slabs. The thermal performance of conventional energy slabs is relatively low due to the interference with the ambient air temperature. This fatal drawback can be overcome by installing energy slabs in an underground parking lot, where the influence of ambient air is not significant. This study experimentally investigated the applicability of two types of energy slabs (floor type and wall type), which were constructed on the basement slab in an underground parking lot. In particular, an aerogel-type thermal insulation layer was fabricated in each energy slab to isolate it from the ambient air along with enhancing the structural stability against automobiles. In the thermal performance tests, the constructed energy slabs showed a thermal performance 265% higher than the conventional energy slabs. Moreover, the aerogel-type thermal insulation layer effectively prevented surface condensation. However, the thermal stress of 2350 kPa was induced by the cooling operation in the energy slabs, which means the energy slab should possess sufficient tensile strength to secure the structural integrity of the parking lot basement.

Suggested Citation

  • Seokjae Lee & Sangwoo Park & Taek Hee Han & Jongmuk Won & Hangseok Choi, 2023. "Applicability Evaluation of Energy Slabs Installed in an Underground Parking Lot," Sustainability, MDPI, vol. 15(4), pages 1-15, February.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:4:p:2973-:d:1060009
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    References listed on IDEAS

    as
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