Changzhou Sunlight Solar Energy Co., Ltd.

vacuum tube

vacuum tube
Product Detailed

It has excellent performance, high quality ,reasonable price, long service life ,approved by CE,SRCC solarkeymark,ISO2008,EN1297

 Thefeatures of the  tubes


Length 1500mm1800mm
Outer tube diameter 47mm58mm
Inner tube diameter 37mm47mm
Weight 1.3kg2.2kg
Glass thickness 1.6mm1.6mm
Material Borosilicate Glass 3.3Borosilicate Glass 3.3
Absorptive coating Graded A1/N/A1Graded A1/N/A1
Vacuum degree P<5*10 -3 PaP<5*10 -3 Pa
Thermal expansion 3.3*10 -6 /°C3.3*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 0.8Mpa0.8Mpa
Resist cold -35 °C-35 °C
Resist hailstone Ø 25mmØ 25mm
Resist wind 30m/s30m/s
Start-up temperature <=25°C<=25°C

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