대한건축학회논문집 (Journal of the Architectural Institute of Korea)

  • 제37권12호
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  • Pages.265-275
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  • 2021
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  • 2733-6239(pISSN)
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  • 2733-6247(eISSN)
대한건축학회 (Architectural Institute of Korea)
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기존 벽식 철근 콘크리트조 대비 프리캐스트 콘크리트조 공동주택 외피의 단열성능 비교분석

Insulation Performance Comparison of Apartment Building Envelopes Composed of Reinforced Concrete and Precast Concrete

  • 주나영 (이화여자대학교 대학원) ;
  • 송승영 (이화여자대학교 대학원)
  • 투고 : 2021.10.13
  • 심사 : 2021.11.26
  • 발행 : 2021.12.30
⟨ 이전 논문 다음 논문 ⟩

초록

The aim of this study is to evaluate the actual insulation performance of the apartment building PC (precast concrete) envelope to which steel tying materials are additionally installed between structures and hollow-core slabs are applied. Through three-dimensional steady-state heat transfer simulation, the energy performance and condensation risk of each envelope composed of RC (reinforced concrete) and PC having the same legal U-factor and insulation method were compared and analyzed. As results, it was found that the effective U-factor and temperature difference ratio of the RC and PC envelopes were very similar, indicating that the energy performance and condensation risk were almost the same. The effective U-factor of both the RC and PC envelopes was about 30 to 90% higher than the legal U-factor, indicating a large heat loss due to thermal bridges. Therefore, in order to improve energy performance, it is necessary to remove thermal bridges in both the RC and PC envelopes.

키워드

과제정보

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었음.(과제번호 21ORPS-B158109-02)

참고문헌

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