Innovative Integrated Window Design with Electric Lighting Design System to Reduce Lighting Intervention in Office Buildings

A high luminance contrast between windows and surrounding surfaces can increase the risk of discomfort glare, which can diminish office workers' satisfaction and productivity. This research explores how increasing the luminance of areas surrounding the window using an innovative electric wall-washing system could improve subjective scores for the window appearance, as well as reducing energy bills in office rooms with different window-to-exterior-wall ratios. This study demonstrate that the proposed electric wall-washing system with low power level does efficiently improve window appearance, as well as mitigating problematic interventions in lighting conditions that lead to increased energy consumption in buildings.