1) solar vacuum tubes
2) Manufacture since 1998
2) Manufacture since 1998
3) Free training, no worry
4) 5-year warranty, free replacement
5) One-stop solution & service
6) OEM & design service offered
7) 10L-600L water tank available
8) AAA, BV, SGS, ISO9001-2008, CE,
Technical data:
Skylight Evacuated Tube Specifications:
1. Length (nominal):1800mm/1500mm/2100mm/500mm/800mm
2. Outer tube diameter: 58mm/47mm/70mm
3. Inner tube diameter: 47mm/37mm/60mm
4. Glass thickness:1.8mm/2.0mm
5. Thermal expansion: 3.3x10-6°C
6. Material: Borosilicate Glass 3.3
7. Absorptive Coating: Graded Al-N/Al
8. Absorptance: v>93% (AM1.5)
9. Emittance: <8% (80°C)
10. Vacuum: P<5x10-3 Pa
11. Stagnation Temperature :> 200°C
12. Heat Loss :< 0.8W/ (m2°C)
13. Maximum Strength: 0.8MPa
14. Start-up temperature: ≤25°C
15. Anti hail: ≤Ø 25mm
16. Weight:2.2kg/1.2kg/3.0kg
17. Package: 1880*330*170(10pcs) 1880*280*170(8pcs)
18. Sky-light Special tube like 100mm or 120mm tubes are also available against request