Abstract
In recent years, outer wall materials with the high reflective performance of solar radiation are adopted in many cases in order to reduce the air conditioning loads. And architectures covered for the glass are increasing from the problem on a design. When the light environment in a street canyon is considered from the human on the sidewalk, though the skylight which is emitted to the evaluation plane is obstructed for the building, the reflected light from the building outer wall increases. In this study, incident amount of the ultraviolet radiation to the evaluation plane is presumed based on the reflective property of the outer wall materials and space composition of a street canyon. As a result of analysis, the amount of ultraviolet radiation changed greatly with positions of evaluation plane, and it was able to be shown clearly that the incident amount is influenced by selection of outer wall material.
