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Study of Remodified Split Flux Method with Various Sky Conditions and External Obstructions
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다양한 천공상태 및 외부 방해물 조건에서 실내주광조도의 평가를 위한 분할광속법의 개선에 관한 연구

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Type
Academic journal
Author
Yun, Su-In (고려대학교) Kim, Kang-Soo (고려대학교)
Journal
ARCHITECTURAL INSTITUTE OF KOREA JOURNAL OF THE ARCHITECTURAL INSTITUTE OF KOREA Planning & Design Vol.32 No.7 (Wn.333) KCI Excellent Accredited Journal
Published
2016.7
Pages
123 - 130 (8page)

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Study of Remodified Split Flux Method with Various Sky Conditions and External Obstructions
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Abstract· Keywords

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It is important to understand the distribution of luminance of the sky as accurately as possible. The purpose of this study is to modify split flux method, formulae for daylight factor(DF), with variable sky conditions and obstructions. Split flux method has been modified continuously through a number of previous studies. And several studies had also applied this formula not only to the CIE overcast sky but also to the other CIE standard skies. CIE standard skies are studied based on measurement data of real sky. In existing research of split flux, there was no direct sun component in SC(Sky component). So there are 4 cases to modify split flux method with direct sky component, and best case is picked to compare with Desktop radiance program. And also obstructions threw a shadow over 145 sky patchs for the consideration of external obstruction. As a result, the outputs of remodified formulae are improved and outputs of considering external obstruction are enhanced.
#조도비 #국제조명위원회 표준천공 #분할광속법 #외부방해물 #Illuminance ratio #CIE standard sky #Split flux method #External obstructions

Contents

Abstract
1. 서론
2. 이론고찰
3. 분할광속법(Split flux method)의 수정
4. 평가모델의 개요와 시뮬레이션 조건
5. 시뮬레이션 결과 분석
6. 결론
REFERENCES

References (16)

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Alshaibani, K. / 2011 / Finding frequency distributions of CIE Standard General Skies from sky illuminance or irradiance / Lighting Res. Technol :1~9 google schola Hopkinson, R. G. / 1954 / An empirical formula for the computation of indirect component of daylight factor / Trans illum Eng Soc 19(7):201~219 google schola Kim, C. S, / 2011 / Daylighting simulation as an architectural design process in museums installed with toplights / Building and Environment 46:210~222 google schola Kittler, R. / 1998 / A set of standard skies characterizing daylight conditions for computer and energy conscious design / Polygrafia SAV google schola Li, D. H. W. / 2010 / Determination of vertical daylight illuminance under non-overcast sky conditions / Building and Environment 45:498~508 google schola

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UCI(KEPA) : I410-ECN-0101-2017-540-000770405