Analysis of daylight responsive dimming system performance

A detail computer analysis model (DayDim) was developed to investigate the performance of daylight responsive dimming systems. This computer model analyzes performance and lighting energy saving potential of the systems by modeling photosensor response. System performance was quantified and analysed through computer simulation using CIE and Perez daylight models for daylighting analysis. In addition, a large office space employing an open-loop proportional control daylight responsive dimming system was monitored. The results from simulation and field measurements show generally good agreement and issues which would affect system performance are discussed.