THEORETICAL AND EXPERIMENTAL-ANALYSIS OF DAYLIGHT PERFORMANCE FOR VARIOUS SHADING SYSTEMS

The daylight coefficient approach is used for the theoretical analysis of various shading systems. Once a set of these coefficients has been calculated, it is very easy to calculate illuminance in the interior of a room under various sky luminance distributions. The present paper examines a method based on daylight coefficients to evaluate daylight in the interior of a room. The method is compared with existing radio sity and ray-tracing methods. The examined method is experimentaly val idated using measurements obtained in a PASSYS test-cell equipped with shading devices.