“…Based on intensive literature search, the number of parameters affecting the energy consumption of office buildings were narrowed down to 24. 1,2,16 They include the gross floor area, numbers of stories, floor height, width/depth ratio, orientation, window/wall ratio (South, East, West, North), insulation performance of walls/roof/floors, window performance (U-value, SHGC (Solar Heat Gain Coefficient, VLT (Visual Light Transmittance), ventilation rate and dimming control ( Table 1.). The window performance parameters including the thermal performance, solar heat gain, and visual light transmittance were considered.…”