Well I'm not all that up to speed on the technology used, but could it be an interactive facade in the sense of being activated by light/temperature sensitive devices that activate on a brise-soleil, shade, or blind to reduce light radiation and thermal gain in the building? In which case could the machinery be operated by a "ventilated cell" sensor:

"The Ventilated cell is a closed shaded
box equipped with an 80 x 80 mm fan.
The fan provides a constant flow of air
in the cell. This is the recommended way
to monitor temperature in greenhouses
and other sunlight effected places"

A bit of a stab in the dark...