1.CE,SRCC,Solar Keymark,SABS
2. Non-pressurized
3. 10 years warrantee
4. 10-15 days delivery
5. OEM available...
Price Terms:FOB,CIF,EXW
Payment Terms: T/T,Western Union,MoneyGram,L/C
Minimum Order: Negotiatable
Delivery Port: Customized
Contact SupplierPackaging Detail: standard exporting package
Delivery Detail: order 10 to 20 days
All-glass evacuated solar tube(SFVA)
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 |