Glass Vacuum Tube, XKVT-02, Evacuated Tube, Solar Collector

Vacuum tubes consists of two glass tubes outer tube and inner tube
Outer tube is made of extremely strong transparent borosilicate glass and adopted magnetism control
Inner tube is made of borosilicate glass
Excellent solar heat absorption
Intercept efficiency: > 93%
Low heat reflection properties: < 0.86%
Main types of vacuum tube: 47 x 1, 500, 58 x 1, 800, 70 x 2, 000 and 70 x 2, 100mm
Stagnation temperature: 180 to 190 degrees Celsius
Heat insulating time: 72 to 80 hours
Hail resistance: 25mm