The energy savings achieved with Suntracker system compared with passive Solatube is higher for angles between 0 – 25 degrees in 13,8%.
In total, and for the entire range of angles of insolation, the Suntracker lighting system performs better than the passive Solatube, resulting in greater energy savings 5,7%.
GPS ST ® Controller
Το Global Positioning System (GPS ST ®) that can and “recognizes” the longitude and latitude of the mirror and the orientation of the sun, is the brain of the unit.
Using for operating the energy from a small solar panel, determines the position of the system, and rotates the mirror of Suntracker during movement of the sun directing thereby sunlight inside buildings throughout the day.
Solar geometry
The majority of commercial and industrial passive lighting systems are installed on flat roofs, where the lighting system “sees” almost complete hemisphere sky.
Usually , there are some obstacles, that block sunlight from reaching the passive light pipe. A lighting system in a sloping roof can not see the full hemisphere sky, but only a partial vision defined by the slope of the roof. Additional, depending on the angle and orientation of the sloping roof , sunlight can not reach the illuminated during certain hours of the day or etous.Gia example a lighting system installed in an east-facing roof slope 45 °, will capture direct sunlight only during the morning and afternoon hours.
The afternoon will capture solar radiation, but only three quarters of the sky. Result, The afternoon will bring significantly less light in the interior of the building by an identical lighting system located on a flat roof.
Shape. The penetration of sunlight on pitched and pitched roofs.
The slope and the roof orientation, and the skylight have significant effect on the penetration of natural light inside the building.
