Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Application of the Daylight Factor Formula with the Modified Split Flux

Modified Split Flux를 이용한 주광률 계산식 적용에 관한 연구

  • Yun, Su-In (Department of Architecture, Korea University) ;
  • Yun, Gyeong (Department of Architecture, Korea University) ;
  • Kim, Kang-Soo (Department of Architecture, Korea University)
  • 윤수인 (고려대학교 건축학과) ;
  • 윤경 (고려대학교 건축학과) ;
  • 김강수 (고려대학교 건축학과)
  • Received : 2014.10.02
  • Accepted : 2014.12.19
  • Published : 2014.12.30
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Abstract

Daylighting has a great effect on people inside the room. It is also closely related to the lighting energy consumption. Daylight factor(DF) is a very important index for evaluation of the daylighting in overcast sky. The objective of this study is to verify the suitability of the Tregenza's Modified Split Flux formula for the calculation of the daylight factor. We compared the daylight factors calculated by two methods; one by a measurement with 1/5 scale model and the other by the Daysim program. We used variables for verification as window wall ratios(WWR) and angles of the sky visible. As a result, daylight factor calculated by Modified Split Flux is similar to the measurement when more daylight enters the inside. And error is significantly increased when the angle of the sky visible is $50^{\circ}$.

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References

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