Specifications(single layer)

Structure

All-glass double-tube structure

Glass material

Borosilicate glass 3.3(Li nuo)

thickness

1.6mm

diameter

Outer tube

70/58/47mm

Inner tube

58/47/37mm

Length

2100/2000/1800/1500mm

Solar absorbing layer

Structure

AL/ALN

Coating method

1 target magnetron sputtering coating

Absorption ratio

0.90~0.91

Emission ratio

0.09~0.10

Vacuum tightness

5.0×10-3Pa

heat loss

0.6~0.7W/(m².°C)

Resist Hail

Φ25mm

Resist cold

-20°C

Resist high temperature

250 °C

Life

15 years

Warranty

6 years