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2025 Vol.19, Issue 1 Preview Page

Research Article

Solar Radiation Calculation for Double Layer Window Pane Considering High Performance Film

고성능 필름적용을 고려한 이중 창호의 일사량 계산

Woong-June Chung1
,
Min-Hyeong Kim2
,
Kwang-Woo Kim3*
정 웅준1
,
김 민형2
,
김 광우3*
1Assistant Professor, Department of Equipment and Fire Protection Engineering, College of Engineering, Gachon University, Sung-Nam, Korea
2Researcher, Institute for Passive Zero Energy Building, Seoul, Korea
3President, Institute for Passive Zero Energy Building, Seoul, Korea; Professor Emeritus, Seoul National University, Seoul, Korea
1가천대학교 공과대학 설비소방공학과 조교수
2패시브제로에너지건축연구소 연구원
3패시브제로에너지건축연구소 소장, 서울대학교 명예교수
*Corresponding Author
28 February 2025. pp. 12-21
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Abstract

This paper presents a refined methodology for calculating solar radiation through double-layered window systems, addressing the limitations of conventional approaches outlined in ISO 9050 and EN410. While these standards employ fixed transmittance values for glass layers, leading to inaccuracies in complex fenestration systems with varying films and coatings, the proposed method incorporates directional transmittance. By considering the distinct transmittance values of each glass layer depending on the direction of solar radiation, this method achieves enhanced accuracy. A comprehensive analysis of diverse double layered window configurations with varying film types and positions was conducted. Comparisons between the proposed method and conventional approaches revealed significant discrepancies in solar radiation calculations, particularly in configurations with internal reflective coatings. Furthermore, a notable difference was observed in the calculated radiant heat exchange from the interior to the exterior environment. The enhanced accuracy of the proposed method offers valuable implications for energy-efficient building design and performance evaluation, enabling more precise calcluation of solar heat gain and optimization of window system design.

Keywords
일사량 계산
이중 창호
투과율 방향성
고성능 필름
키워드
Solar radiation calculation
Double-layered window system
Directional transmission
High performance film
References
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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 : 19
  • No :1
  • Pages :12-21
  • Received Date : 2024-12-16
  • Revised Date : 2024-12-27
  • Accepted Date : 2025-01-02
  • DOI :https://doi.org/10.22696/jkiaebs.20250002
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