DEVELOPMENT OF RADIANCE FOR ADVANCED LIGHTING SIMULATION OF NOVEL DAYLIGHTING TECHNOLOGIES
Authors: Greenup, Phillip ; Edmonds, Ian
Several new algorithms have been developed for the RADIANCE lighting simulation program to
better simulate new daylighting devices. Developments include algorithms to accurately simulate two
new daylight redirecting devices. Measurement of devices’ luminous outputs, sensitivity studies and
improved sky models were also developed. Further investigations focussed on more accurate
material modelling, and validation assessment techniques.
Each algorithm has been applied to many simulation studies, improving simulation performance when
compared with measurements and expectation. Thus, the developments outlined in this paper have
improved the capability of RADIANCE to accurately assess the contributions of new daylighting
devices to improved building performance. Following descriptions of the developed algorithms, the
method of implementation in a typical RADIANCE simulation is discussed.