Automated Window Blinds with Variable Solar Heat Gain
Windows present an both an opportunity and a challenge to green building designers. Harvesting daylight during the day and warmth in the winter while reducing heat gain in summer have been mutually exclusive goals. A new type of autonomous window blind brings in controlled amounts of diffused daylight while varying its solar heat gain coefficient according to the thermal needs of the space. This has the potential to greatly reduce lighting, heating and cooling loads in the space while at the same time meeting LEED guidelines for daylight autonomy and annual sun exposure. An autonomous, sensor-based approach eliminates building system integration costs and complexity.