All Sky Model-Lを導入した昼光照明計算プログラムの性能検証

抄録

It is important to apply the natural light effectively for the energy saving of buildings. All Sky Model-L represents sky luminance distributions for all sky conditions continuously from clear sky to overcast sky. RADIANCE is a backward ray-tracer and is highly evaluated on its accuracy. In this research work, the RADIANCE combined with All Sky Model-L was developed. The accuracy of RADIANCE was evaluated comparing the measurement values with the primitive rectangular scale model and the calculated values under precisely measured conditions. The calculation values by the RADIANCE based on the estimated sky luminance distributions by All Sky Model-L are evaluated. The accurate features of the analysis are introduced in this paper.