1. The biggest advantage: Using advanced megnetron sputtering skill on rete to make sure offer higher absorbility and lower emission.
2. The layer of metal is made of copper, which will offer lower emmission and higher heating aging.
3. High Thermostability: Stainless steel ion in replace of aluminium in absorbent bed to resist higher temperature.
4. The emmission is very stable even if interferometer coating increase temperature.
5. Increase of vacuum on interlayer, up to grade 10.
6. Large and high couverage of selective absorbing coating makes the absorbing and insulation effect of heat excellent.
7. Anti-cold: Advanced vacuum technology, 60 minutes strict exhaust through high temperature of 450, and truncate convection of heat radiation can make sure its normal working even below minus 40.
8. Longer working time: Compare to the ordinary water heater vacuum tube, our soalr vacuum tube won't degrade pefermance even in long-time air drying.
Performance and Specification:
Tube Structure: All-glass duble deck co-axial structure Glass Material: High borosilicate 3.3 glass
Outer tube diameter and glass thickness:
Φ =47± 0.7mm&=1.6mm Φ =58± 0.7mm&=1.6mm Φ =70± 0.7mm&=2.0mm
Inner tube diameter and glass thickness:
Φ =37± 0.7mm&=1.6mm Φ =47± 0.7mm&=1.6mm Φ =58± 0.7mm&=1.6mm
Tube Length: 800mm 1200mm 1500mm 1600mm 1800mm 1900mm 2000mm 2100mm
Absorption coating property:
Coating Material: CU/SS-ALN(H)/SS-ALN(L)/ALN Emmition Ratio: E∑ H=0.04~0.06(80± 5)
Sediment Method: Three target magnetron sputtering plating Absorptivity: As=0.92~0.96(AM1.5)
Vacuum Degree: P≤ 5.0*10-3(Pa) Hail Resistance: Φ 25mm
Stagnation temperature (temperature inside of empty evacuated tubes): 260---300
Average heat loss: ULT 0.4W---0.6W/M2 Presure endure: 1MPa
Raw-Material:
Borosilicate glass 3.3 is the basis material for productions of solar vacuum tube. All process steps for glass material are strictly abide by National Standard QB/T2436-99(Material glass for solar vacuum tube). This guaranteed the first-class technology and skill for producing raw glass tubes, and also ensured our vacuum tube products have the top quality.
