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2021 Vol.15, Issue 1 Preview Page

Research Article

Comparison of Insulation Performance of Curtain Wall System with Conventional Rectangular Pipe Frame and Truss-shaped Insulation Frame

기존 각파이프 프레임과 트러스 단열 프레임 적용 커튼월 시스템의 단열성능 비교평가

Bo-Hye Choi1
,
Dong-Il Shin2
,
Seung-Yeong Song3†
최 보혜1
,
신 동일2
,
송 승영3†
1Researcher, Department of Architectural & Urban Systems Engineering, Ewha Womans University, Seoul, Korea
2President, TIFUS KOREA, Gyeonggi, Korea
3Professor, Department of Architectural & Urban Systems Engineering, Ewha Womans University, Seoul, Korea
1이화여자대학교 건축도시시스템공학과 연구원
2(주)티푸스코리아 대표
3이화여자대학교 건축도시시스템공학과 교수
*archssy@ewha.ac.kr
28 February 2021. pp. 75-86
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Abstract

The aim of this study is to compare the insulation performance of each curtain wall system applying the conventional rectangular pipe frame and the truss-shaped insulation frame that reduces the thermal bridging effect of the conventional frame. The insulation performance of each system was evaluated by performing a three-dimensional steady state heat transfer simulation reflecting the actual installation conditions. The results show that the heat losses of the conventional and alternative systems are 33.06 W and 21.12 W, respectively, and the effective U-factors are 0.264 W/㎡K and 0.169 W/㎡K, respectively. The effective U-factor of the conventional system is significantly higher than the design U-factor, indicating that the heat loss due to the thermal bridge is large. The effective U-factor of the alternative system is reduced by 36% compared to the conventional system, which significantly reduces the heat loss. In addition, the lowest indoor surface temperature and temperature difference ratio of the alternative system increases by 0.5℃ and decreases by 0.02, respectively, compared to the conventional system, which reduces the risk of condensation.

Keywords
Curtain wall system
Truss-shaped insulation frame
Thermal bridge
Effective U-factor
Condensation
키워드
커튼월 시스템
트러스 단열 프레임
열교
유효 열관류율
결로
References
1
Kim, S.S., Yim, H.C. (2012). Evaluation of the Thermal Transmittance of Curtain walls according to EN 13947. Journal Architectural Institute of Korea Planning & Design, 28(11), 401-408.
2
Song, J.H., Lee, D.Y., Shin, D.I., Jun, H.D., Park, C.Y., Kim, S.K. (2019). Evaluation of Building Envelope Performance of a Dry Exterior Insulation System Using Truss Insulation Frame. Journal of Architectural Institute of Korea Structure & Construction, 35(6), 153-164.
3
Song, J.H., Park, S.H., Park, M.J., Lim, J.H., Song, S.Y. (2015a). Influence of Thermal Bridges on the Insulation Performance of Curtain Wall Panel Systems. Journal of Asian Architecture and Building Engineering, 14(3), 741-748. 10.3130/jaabe.14.741
4
Song, J.H., Park, M.J., Lim, J.H., Song, S.Y. (2015b). Eenrgy, Condensation Risk and Constructability Evaluation of Metal-Exterior Curtain Wall Panel Systems for Reducing Heat Loss through Thermal Bridges. Journal of Architectural Institute of Korea Planning & Design, 31(2), 283-293. 10.5659/JAIK_PD.2015.31.2.283
5
Shin, D.I. (2017). Developement of thermal breaker for the dry envelope and applied case. Annual Conference of AIK, 37(2), 1230-1234.
6
Ministry of Land, Infrastructure and Transport (MOLIT). (2016). Design standard for preventing condensation in apartment buildings.
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Ministry of Land, Infrastructure and Transport (MOLIT). (2018). Energy saving Design Standards of Buildings.
8
Ministry of Land, Infrastructure and Transport (MOLIT). (2021). Enforcement Decree of the Building Act.
9
Physibel. (2017). TRISCO Manual. computer program to calculate 3D & 2D steady state heat transfer in rectangular objects. version 14.0 w.
10
ISO 10211. (2017). Thermal bridges in buildings construction - Heat flows and surface temperatures - Detailed calculations.
11
ISO 10077-2. (2017). Thermal performance of window, doors and shutters-Calculation of thermal transmittance-Part2. Numerical method for frames.
12
TIFUS. www.tifus.co.kr
Information
  • Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
  • Publisher(Ko) :한국건축친환경설비학회
  • Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
  • Journal Title(Ko) :한국건축친환경설비학회논문집
  • Volume : 15
  • No :1
  • Pages :75-86
  • Received Date : 2021-01-20
  • Revised Date : 2021-02-03
  • Accepted Date : 2021-02-04
  • DOI :https://doi.org/10.22696/jkiaebs.20210007
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