A Study on the Daylighting Transmittance Efficacies of Skylights by Calculating the Effective Transmittance of Light Well

광정의 유효투과율에 의한 천창 형태별 주광의 투과효율 평가

  • 김창성 (협성대학교 건축공학과)
  • Received : 2011.11.21
  • Accepted : 2012.02.03
  • Published : 2012.04.30

Abstract

Daylight is one of the most critical factors that can be utilized for architectural spaces; compared to artificial light, it is a sustainable energy source without the cost of electric energy and offers a more natural feeling to the visitors in the building. To make the space quality better, many architects have tried to predict daylight performance during the design process. The aim of this study is to evaluate the daylight transmittance efficacies of the five shapes - Flat, Pyramid, Dome, Barrel Vault. Ridge - of skylights. The results of this study indicated that the differences of transmittance efficiency among various skylights were less than 4.6% except the flat shaped skylight. Therefore, this study shows that there were no big differences of the daylight transmittance efficacies among the shapes of skylights.

Keywords

References

  1. Christoph F. Reinhart, Sebastian Herkel(2000), The simulation of annual daylight illuminance distributions - a state-of-the-art comparison of six RADIANCE-based methods, Energy and Buildings, Vol. 32, pp 167-187 https://doi.org/10.1016/S0378-7788(00)00042-6
  2. Edward Yan-Yung Ng, Lam Khee Poh, Takehiko Nagakura (2001), Advanced lighting simulation in architectural design in the tropics, Automation in Construction, Vol. 10, pp 365-379 https://doi.org/10.1016/S0926-5805(00)00053-4
  3. F. Maamari, M. Andersen, J. Boer, W. L. Carrol, D. Dumortier, P. Greenup(2006), Experimental validation of simulation methods for bi-directional transmission properties at the daylighting performance level, Energy and Buildings, Vol. 38, pp 878-889 https://doi.org/10.1016/j.enbuild.2006.03.008
  4. Jan Wienold(2009), Dynamic daylight glare evaluation, Eleventh International IBPSA Conference Glasgow, Scotland, July 27-30, 2009, pp 944-951
  5. Danny H. W. Li, Ernest K.W. Tsang (2008), An analysis of daylighting performance for office building in Hong Kong, Building and Environment, Vol. 43, pp 1446-1458 https://doi.org/10.1016/j.buildenv.2007.07.002
  6. H. S. Kim(2004), Prediction of lighting energy reduction rate in an office building, Ph.D thesis, Korea University
  7. Danny H. W. Li, Ernest K.W. Tsang(2005), An analysis of measured and simulated daylight illuminance and lighting savings in a daylit corridor, Building and Environment, Vol. 40, pp 973-982 https://doi.org/10.1016/j.buildenv.2004.09.007
  8. Christoph F Reinhart, Marilyne Andersen(2006),, Development and validation of a RADIANCE model for a translucent panel, Energy and Buildings, Vol. 38, pp 890-904 https://doi.org/10.1016/j.enbuild.2006.03.006
  9. William Lam, Sunlighting as Formgiver for Architecture, Van Nostrand Reinhold Co, New York, pp 141-143
  10. Kyoo Dong Song, Illumination Levels and Luminance Distributions in Sunlit Atria with Different Canopy Systems and Well Configurations, the Ph.D. dissertation of Texas A&M University, 1993. 12