DOI QR코드

DOI QR Code

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

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

References

  1. 국토교통부, 건축물의 에너지절약설계 기준 고시 제 2014-520호, 2014
  2. 녹색성장위원회, 국가 온실가스 감축목표 달성을 위한 로드맵, 2014
  3. 송승영, 구보경, 임재한, ISO 13790의 Monthly Calculation Method를 이용한 내단열 대비 외단열 공동주택의 열교 제거와 열용량 증가에 의한 난방 및 냉방 에너지절약 효과 분석, 대한건축학회논문집, 계획계 26(7), 2010
  4. 송승영, 구보경, 임재한, 내,외단열 구조체의 열관류율 수준별 열교에 의한 단열 성능 저하 정도 분석, 한국건축친환경설비학회 학술발표대회 논문집, 2012.10
  5. 석호태, 정지나, 송승영, 석재마감 커튼월의 전열성능 평가 및 단열성능 향상에 관한 연구, 대한건축학회 논문집, 계획계 23(4), 2007
  6. 구소영, 구혜연, 여명석, 김광우, 열교를 고려한 커튼월 벽체부의 열성능 평가에 관한 연구, 한국건축친환경설비학회 논문집, 2(4), 2008
  7. Jan Kosny, Jeffrey E. Christian, Thermal evaluation of several configurations of insulation and structural materials for some metal stud walls, Energy and Buildings, 22(2), 1995
  8. 신우철, 김승철, 윤종호, 열교부위를 고려한 커튼월 사무소 건물의 열성능 해석에 관한 연구, 한국태양에너지학회 논문집, 31(3), 2011
  9. 구보경, 임재한, 송승영, 국내외 주거용 건물 열교부위 단열성능 규정현황 및 개선 방안 제안, 대한건축학회 학술발표대회 논문집, 계획계31(2), 2011. 10
  10. 구보경, 임재한, 송승영, 국내 주거용 건물 열교부위 단열성능 규정개선 방안 제안, 한국건축친환경설비학회 학술발표대회 논문집, 2011.10
  11. T.G. Theodosiou, A.M. Papadopoulos, The impact of thermal bridges on the energy demand of building with double brick wall constructions, Energy and Buildings, 40(11), 2008
  12. G. Evola, G. Margani, L. Marletta, Energy and cost evaluation of thermal bridge correction in Mediterranean climate, Energy and Buildings, 43(9), 2011
  13. Y. Gao, J.J. Roux, L.H. Zhao, Y. Jiang, Dynamical building simulation: A low order model for thermal bridges losses, Energy and Buildings, 40(12), 2008
  14. F Deque, F Ollivier, J.J Roux, Effect of 2D modelling of thermal bridges on the energy performance of buildings: Numerical application on the Matisse apartment, Energy and Buildings, 33(6), 2001
  15. A. Ben Larbi, Statistical modelling of heat transfer for thermal bridges of buildings, Energy and Buildings, 37(9), 2005
  16. Al-Sanea SA, Zedan MF, Heat transfer characteristics and optimum insulation thickness for Hordi roofs using a pseudo one-dimensional dynamic model, Int J Ambient Energy, 27, 2006
  17. Mark Gorgolewski, Developing a simplified method of calculating U-values in light steel framing, Building and Environment, 42(1), 2007
  18. Sukran Dilmac, Abdurrahman Guner, Filiz Senkal, Semiha Kartal, Simple method for calculation of heat loss through floor/beam-wall intersections according to ISO 9164, Energy Conversion and Management, 48(3), 2007
  19. G. Mao, Thermal bridges, in: Efficient Models for Energy Analysis in Buildings, Department of Building Sciences, unglika Tekniska Hogskolan, Stockholm, 1997
  20. International Code Council(ICC), International Energy Conservation Code(IECC), 2012
  21. ANSI/ASHRAE/IES Standard 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings, 2013
  22. HM Government, Building Regulations 2010, Approved Document L1A Conservation of fuel and power in new dwellings, 2013
  23. HM Government, Building Regulations 2010, Approved Document L1B Conservation of fuel and power in existing dwellings, 2011
  24. HM Government, Building Regulations 2010, Approved Document L2A Conservation of fuel and power in new buildings other than dwellings, 2013
  25. HM Government, Building Regulations 2010, Approved Document L2A Conservation of fuel and power in existing buildings other than dwellings, 2011
  26. BRE, IP1/06 Assessing the effects of thermal bridges at junctions and around openings, 2006
  27. BRE, SAP, The Government's Standard Assessment Procedure for Energy Rating of Dwellings, 2012
  28. EnEV, The new energy saving regulation, 2014
  29. The Danish Ministry of Economic and Business Affairs, Denmark Building Regulations, 2010
  30. DS Standard 418, Beregning af bygningers varmetab (Calculation of heat loss from buildings), Dansk Standard, 2002
  31. New Zealand Government, Compliance Document for New Zealand Building Code Clause H1 Energy Efficiency - Third Edition, Prepared by the Department of Building and Housing, 2011
  32. NZS(New Zealand Standard) 4214, Methods of Determining the Total Thermal Resistance of Parts of Buildings, 2006
  33. ISO 10211, Thermal bridges in building construction - Heat flows and surface temperatures - Detailed calculations, 2007
  34. BR 497, Building Research Establishment - Conventions for calculating linear thermal transmittance and temperature factors, 2007
  35. Physibel, Physibel Trisco Manual, 2010