Abstract
Adaptive suspended particle device (SPD) switchable glazing is promising for low energy building application. SPD glazing allows light passes through it in the presence of applied voltage and block light in the absence of power supply. In this work SPD glazing performance after 3 years of outdoor exposure was evaluated. It was found that contrast ratio of SPD glazing before and after exposures changed from 1:11 to 1:10. SPD glazing surface temperature for any transparency level varies between 13 and 40°C under indoor and outdoor thermal exposure. SPD glazing's surface temperature variation occurs due to the incident radiation level, not for the transmission level of glazing. Voltage and power requirement of SPD glazing did not vary at elevated glazing surface temperature.
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