Subjective assessment of visual comfort in a daylit workplace with an electrochromic glazed façade

Abstract Electrochromic (EC) glazing is increasingly employed in building façades to achieve better visual comfort for the occupants. EC can modulate light entering through façade by varying solar transmittance of glass and therefore work as a shading strategy minimize heat gains or glare. However, it also alters spectrum distribution façade, which influences certain attributes associated with space. This user assessment study evaluates some these including colour perception elements inside outside room, uniformity daylight distribution, clarity view glare when sun field view. Results indicate (τ v ) 0.6% sufficient control peripheral (FOV) while τ v,n-n 0.14% required close central FOV. Most participants did not perceive colours outdoor environment natural seen glazed window. The majority desired change configuration adding an additional device.