Shading Devices Designed to Achieve the Desired Quality of Internal Daylight Environment

ABSTRACT: The main purpose of this study was to design the geometry, position and finishing materials of shading devices for central Europe latitude and weather conditions. There were two main factors considered in our study to determine the parameters of the devices. The first one – maximum daylight utilization (from energy savings point of view) and the second one – daylight distribution inside the space (on the level required by visual comfort parameters – the illuminance level and the glare index). There were some initial assumptions limiting the number of solutions. The most important was that all the elements of the devices must be permanently fixed and no rotation was permissible. It means that only one solution is required for summer and winter season. The numerical analyses were done using advanced numerical techniques based on Backward Ray Tracing Method for selected sky conditions