Evacuated-tube collectors can achieve extremely high temperatures (170°F to 350°F), making them more appropriate for cooling applications and commercial and industrial application. The collectors are usually made of parallel rows of transparent glass tubes. Each tube contains a glass outer tube and metal absorber tube attached to a fin. The fin is covered with a coating that absorbs solar energy well, but which inhibits radiative heat loss. Air is removed, or evacuated, from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss.

Working temperature:	99 celsius degree
Working pressure	1.0MPa (10 bar)
Vacuum tube:	Φ58×L1800mm
Tube Quantity	10pcs,15pcs,20pcs,25pcs,30pcs
Absorber Area:	1.92m2/2.57m2/3.22m2/3.86m2, 4.65 m2,7.76 m2
Tube Hail Resistance	≤25mm
Emission coefficient	<10%
Absorption coefficient	>92%
Absorber material	Aluminum
Glass Material	Borosilicate Glass 3.3
Heat insulation layer	Imported polyurethane(Bayer,Germany); Thickness:40mm
Bracket	Galvanized steel board with plastic spraying; Thickness 1.2mm