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Thermal Behavior and Measures to Prevent Condensation of a Newly Developed External Wall Panel

Author

Listed:
  • Goopyo Hong

    (SH Urban Research Center, Seoul Housing & Communities Corporation, Seoul 06336, Korea)

  • Suk-Won Lee

    (SH Urban Research Center, Seoul Housing & Communities Corporation, Seoul 06336, Korea)

  • Ji-Yeon Kang

    (SH Urban Research Center, Seoul Housing & Communities Corporation, Seoul 06336, Korea)

  • Hyung-Geun Kim

    (SH Urban Research Center, Seoul Housing & Communities Corporation, Seoul 06336, Korea)

Abstract

An external wall panel (EWP) as a novel alternative to provide spatial flexibility and improve the performance of external walls was developed. The purpose of this study was to analyze the thermal performance of this EWP. A simulation analysis was carried out to scrutinize whether it was vulnerable to condensation, considering South Korea’s weather conditions, and find countermeasures to prevent this. Results indicated that the indoor surface temperature with the measures of added insulation materials and an inserted thermal-breaker was over 16.5 °C and that these methods could prevent condensation. In addition, this study assessed unsteady-state thermal characteristics, linear thermal transmittance, and the effective thermal transmittance of EWP. Effective thermal transmittance was estimated in consideration of the heat transmittance of EWP and the linear thermal transmittance of its slabs and its connection parts. The thermal characteristics of the building envelope are needed to analyze effective thermal transmittance and linear thermal transmittance-associated thermal bridges.

Suggested Citation

  • Goopyo Hong & Suk-Won Lee & Ji-Yeon Kang & Hyung-Geun Kim, 2019. "Thermal Behavior and Measures to Prevent Condensation of a Newly Developed External Wall Panel," Sustainability, MDPI, vol. 11(3), pages 1-14, February.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:3:p:912-:d:204810
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    References listed on IDEAS

    as
    1. Jihui Yuan, 2018. "Impact of Insulation Type and Thickness on the Dynamic Thermal Characteristics of an External Wall Structure," Sustainability, MDPI, vol. 10(8), pages 1-14, August.
    2. Leccese, Francesco & Salvadori, Giacomo & Asdrubali, Francesco & Gori, Paola, 2018. "Passive thermal behaviour of buildings: Performance of external multi-layered walls and influence of internal walls," Applied Energy, Elsevier, vol. 225(C), pages 1078-1089.
    3. Kontoleon, K.J. & Eumorfopoulou, E.A., 2008. "The influence of wall orientation and exterior surface solar absorptivity on time lag and decrement factor in the Greek region," Renewable Energy, Elsevier, vol. 33(7), pages 1652-1664.
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