Journal of the Architectural Institute of Korea Planning & Design (대한건축학회논문집:계획계)

Architectural Institute of Korea (대한건축학회)
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Analysis of Needs for Building Envelope Insulation Regulations Reflecting the Thermal Bridging Effects through Similar Regulations Review and Case Study

국내외 유사 규정 비교 및 외피 유형별 사례 검토를 통한 건물 외피 단열 규정에서의 열교 영향 고려 필요성 분석

  • 박민주 (이화여자대학교 건축공학과 대학원) ;
  • 송진희 (이화여자대학교 건축공학과 대학원) ;
  • 임재한 (이화여자대학교 건축공학과) ;
  • 송승영 (이화여자대학교 건축공학과)
  • Received : 2014.12.04
  • Accepted : 2015.02.05
  • Published : 2015.02.28
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Abstract

Envelope insulation plays a key role to save building energy consumption. To obtain a high level of insulation performance, it is essential to minimize repeated thermal bridges, which cause substantial heat loss through the building envelope. However, required U-value calculations, prescribed in the Code for Energy-efficient Building Design, assume that there are no thermal bridges and one-dimensional heat transfer occurs. Accordingly, effective U-values of actual buildings are quite different from the U-values prescribed in the Code. The aim of this study was to examine the needs for building envelope insulation regulations reflecting the influence of thermal bridges. A variety of insulation regulations of Korea and many other countries were reviewed and compared. The influence of thermal bridging effects on the insulation performance was evaluated by three dimensional steady-state heat transfer simulations. As results, it was found that effective U-values of cases reflecting thermal bridging effects were 23.8~218.8% higher than those of cases not reflecting thermal bridging effects. Thus, it is necessary to improve building envelope insulation regulations to include thermal bridging effects.

Keywords

Acknowledgement

Supported by : 한국에너지기술평가원(KETEP), 국토교통부

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