| Keywords |
Atrium ; Plan aspect ratio ; Transmittance ; Weather data ; Daylight factor ; Daylight autonomy ; Useful daylight illuminance |
| Abstract |
In modern buildings atrium spaces with large skylights usually work as visual channels to outside and daylight admitting systems to improve visual comfort of the buildings. However, the atrium spaces designed without proper consideration of daylight performance may cause insufficient or excessive illuminance levels and increased glare potential. This study aims to suggest daylighting design data for four-sided atrium spaces by performing dynamic simulations using Daysim program for various atruim design variables such as PAR (Plan Aspect Ratio), SAR (Section Aspect Ratio) and transmittance of skylight. For the dynamic daylight simulation, the weather data of Incheon, Korea provided by EnergyPlus program was used. A total of 48 cases were anayzed in terms of Daylight Factor (DF), Daylight Autonomy (DA) and Useful Daylight Illuminance (UDI). Finally, proper transmittances of skylight to maintain recommended illuminance were suggested for the atrium spaces of different PARs. |