HIGHER ENERGY ABSORPTION :
Due to the cylindrical shape of the evacuated tube, the solar tubes are able to passively track the sun throughout the day.
SUPERIOR INSULATION :
Air is evacuated from the solar tube to form a vacuum. This greatly reduces conductive and convective heat loss from the interior of the tube. As a result wind and cold temperatures have less effect on the efficiency of the evacuated tube collector.
MINIMUM SCALING :
Scale deposition on the glass surface is very Less and easily removable.
HAIL STONE SUSTAINABILITY:
Can sustain against 25 mm hail stone.
In ETC systems pressurized systems are also available.