1)Evacuated Tube
2)heat pipe is 0.6mm
3)used for solar collector
4)1500/47,1800/58
Evacuated Tube
Length | 1500mm | 1800mm | Outer tube diameter | 47mm | 58mm | Inner tube diameter | 37mm | 47mm | Weight | 1.3kg | 2.2kg | Glass thickness | 1.6mm | 1.6mm | Material | Borosilicate Glass 3.3 | Borosilicate Glass 3.3 | Absorptive coating | Graded A1/N/A1 | Graded A1/N/A1 | Vacuum degree | P<5*10 -3 Pa | P<5*10 -3 Pa | Thermal expansion | 3.3*10 -6 /°C | 3.3*10 -6 /°C | Insolation Temperature | >200°C | >200°C | Absorptance | >93% | >93% | Emittance | <8% | <8% | Heat loss | <0.8W/(m2°C) | <0.8W/(m2°C) | Maximum strength | 0.8Mpa | 0.8Mpa | Resist cold | -35 °C | -35 °C | Resist hailstone | Ø 25mm | Ø 25mm | Resist wind | 30m/s | 30m/s | Start-up temperature | <=25°C | <=25°C |
Item No. | Specification | Effective collectorarea m2 | Diameter of solar tube | Length of solar tube | SFVA4715 | Ø47mm | 1.5M | 0.0966 | SFVA5818 | Ø58mm | 1.8M | 0.1350 |
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Evacuated Tube
