Tilt Industrial Design Impressive One Central Park Heliostat
One Central Park is a two-tower (16 and 33 storey) residential structure in Sydney, Australia. At the base is a five-story commercial atrium, and French architects Ateliers Jean Nouvel and PTW Architects did not want this atrium, or the surrounding terraces, to be bathed in shade.
Thus Nouvel came up with the idea of using reflected sunlight to illuminate these spaces. He fell on the Sydney base Tilting industrial design to figure out how to do this.
“As industrial designers, our mission was to integrate the mirrors into the building, making them an urban architectural element rather than a standalone addition with a machine aesthetic,” the company writes. Additionally, “Tilt needed to develop a risk management strategy to ensure the mirrors would not reflect light onto unintended targets.”
Tilt’s massive heliostat solution required the placement of 40 large motorized mirrors on the roof of the shorter tower.
These mirrors reflect light up to 320 small fixed mirrors cantilevered from the tallest tower.
“This arrangement results in a network of reflections, evenly distributed across the ground plane. The resulting reflected light is about 50-70% as intense as available direct sunlight.”
As for what happens at night, Tilt collaborated with international light artist Yann Kersalé to create an integrated LED lighting system. Prototypes were built to evaluate different arrangements, as well as to ensure that everything hit the intersection of “architectural intent, artistic intent, and project budget”.
The end result includes 2,880 nodes each containing six LEDs.
“Described as a chandelier for the city, the heliostat’s reflectors transform into theatrical lighting at night, illuminating the towers.”