Outline area 1.88mm Aperture area 1.82mm Absorption area 1.75mm Capacity of cooper pipe 1.7L Transparent cover Ordinary fabric surface tempered glass Aperture rate ≥ 91% Thickness transparent cover 3.6mm Absorber China-made blue film Thickness of Frame aluminum 0.35mm(915*1915) Heat absorption rate 91± 2% Emission rate 9± 2% Welding technics between copper pipe and absorber laser welding from Bluetec (spot welding double pitch 4mm) Head tubes Φ 22*1
Outline area 1.88mm Aperture area 1.82mm Absorption area 1.75mm Capacity of cooper pipe 1.7L Transparent cover Ordinary fabric surface tempered glass Aperture rate ≥ 91% Thickness transparent cover 3.6mm Absorber China-made blue film Thickness of Frame aluminum 0.35mm(915*1915) Heat absorption rate 91± 2% Emission rate 9± 2% Welding technics between copper pipe and absorber laser welding from Bluetec (spot welding double pitch 4mm) Head tubes Φ 22*1