AN INVESTIGATION OF ANNUAL DAYLIGHTING METRICS FOR RESIDENTIAL HOUSES

摘要

Simple daylighting metrics is also necessary for the BIM design of residential houses. Prior to the establishment of annual daylighting metrics for residential houses in Japan, we investigated the indoor daylight environment in the houses on three blocks in Passive Town Kurobe. Firstly, several parameters and the settings of physical property values in the simulation were adjusted so that the percentage errors of the simulated average luminance on the interior surfaces in each house were less than 10%. Secondly, the annual daylighting simulation was conducted considering the actual operation of shading devices. Using the simulation results by referring to DA and sDA, we propose verDA (Vertical Daylight Autonomy) and versDA (Vertical Spatial Daylight Autonomy) as new daylighting metrics for residential houses in Japan. These metrics are calculated from the vertical eye illuminance, which is more relevant to brightness perception and human health.