SFVA series - All-glass Evacuated Solar System
All-glass evacuated solar system tubes perform very well in overcast conditions as well as low temperatures
| Place of Origin |
China |
Model Number |
SFVA |
| Price Terms |
FOB, CIF |
Brand Name |
Sunlight |
| Payment Terms |
T/T, L/C |
Minimum Order |
10 PCS |
| Supply Ability |
120,000pcs/month |
Delivery Lead Time |
20 days |
| Features: Technical Specifications |
|
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
|
|
Diameter of solar tube
|
Length of solar tube
|
|
SFVA4715
|
Ø47mm
|
1.5M
|
|
SFVA5818
|
Ø58mm
|
1.8M
|
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