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Specifications
ability in tough weather2.certificate:CE ISO9001 TS
3.testing machine:UV 3600
4.OEM is available
Three target vacuum tube is made of high borosilicate glass 3.3,which could resist hail resistance of steel ball(Φ30mm) from the height of 450mm.
The evacuated process of all vacuum tubes last more than 3 hours in order to ensure the perfect vacuum degree,thus, the insulation will be fully guaranteed.
This vacuum tube adopts sputtering technology (SS-ALNx/Cu),which could not only make sure the high absorptivity ,but the lifespan of coating layer could reach to 15 years or even longer.
Raw material |
high borosilicate glass 3.3 |
Glass thickness |
1.6mm |
Outer tube length |
1500mm,1600mm,1800mm,2000mm,2100mm |
Outer tube diameter |
47mm±0.7mm, 58mm±0.7mm |
Inner tube diameter |
37mm±0.7mm, 47mm±0.7mm |
Coating material |
SS-ALNx/Cu |
Absorptance |
0.90-0.95 (AM1.5) |
Emittance |
0.04-0.06(80°c±5°c) |
Vacuum degree |
≤5.0×10-³ (Pa) |
Stagnation temperature |
260°c-300 |
Average heat loss coefficient |
0.4-0.6W/(m².°c) |
Hail resistance |
≤25mm |
|
Solar irradiation for obtaining a preset water temperature rise in tube under stagnation |
3.7-4.2MJ/m²(Φ58mm) 2.9-3.2MJ/m²(Φ47mm) |
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