This paper investigates the impact of well geometry on vertical sky components in atria with square and rectangular forms under a CIE standard overcast sky. By comparing with scale model measurements and analytical theory the vertical sky components calculated using Radiance are validated. More simulated data of vertical sky components for a very wide range of atrium geometries are given. From the results the attenuation of the vertical sky component on the wall of a square atrium is explained and some empirical functions are derived. In addition, the results from atrium models with rectangular floor plan show the relationships between the vertical sky component and the Plan Aspect Ratio. Some guidelines for supporting design are presented.
|Title of host publication||Proceedings of the Passive and Low Energy Architecture (PLEA) 2009 Conference "Architecture Energy and the Occupant's Perspective"|
|Place of Publication||Quebec, Canada|
|Publisher||Les Presses de l'Universite Laval|
|Publication status||Published - 2009|
|Event||26th International Conference on Passive and Low Energy Architecture - Quebec, Canada|
Duration: 22 Jun 2009 → 24 Jun 2009
|Conference||26th International Conference on Passive and Low Energy Architecture|
|Period||22/06/09 → 24/06/09|
- radiance simulation
- theoretical analysis
- scale model
- sky component
Du, J., & Sharples, S. (2009). Daylight prediction in atrium buildings: measurement, theoretical analysis and simulation. In Proceedings of the Passive and Low Energy Architecture (PLEA) 2009 Conference "Architecture Energy and the Occupant's Perspective" (pp. 436-441). Les Presses de l'Universite Laval.