Solar Vacuum Tube

Sunpark Vacuum tubes assimilate the advanced 12 layers of spattering deposition Of trivalent element technology, high borosilicate glass, gradual change of ALN/AIN-SS/CU selective complex absorptive coating. And these make vacuum tubes have high performance of absorptance and low reflection ratio. Through the interlayer, vacuum has a unique effect of thermo, with its temperature up to 380℃ of idle sunning, performing a strong heating ability.

1). Structure: all glass concentric dual tube geometer

2). Glass material: borosilicate glass

3). Absorptance: >0.92

4). Emittance: <0.08 (80℃)

5). vacuum: <5*10-3 Pa

6). Stagnation >230 ㎡.℃/KW

7) average heat loss: <0.8w/ ㎡.℃

8). Lifetime >15years

1).Tri-elements of ALN/AIN-SS/CU for Heat Pipe solar system,AL/N/AL for Non-pressure solar system.

2).Untrifreeze:ALN/AIN-SS/CU -35Deg.C; AL/N/AL -5Deg.C

Material:Borosilicato 

Diameter X Length:47mm X1500mm

Coating:ALN/AIN-SS/CU

Vacuum:≤5x10-3 

Transmittane:0.93

Bearing hail:Ø 25 mm

Material:Borosilicato 

Diameter X Length:47mm X1500mm

Coating:ALN/AIN-SS/CU

Vacuum:≤5x10-3 

Transmittane:0.93

Bearing hail:Ø 25 mm