47-1500mm, 58-1800mm, 58-2100mm evacuted tubes are avaliable.
Key component of solar collector and solar water heater
Coating material: Al-N/Al or SS-Al/N/Cu.
Has been supplying the vacuum tube towards the worldwide well-known manufacturer of solar water heater and solar thermal products.
Higher absorption rate of 92%-94%, lower emission rate.
Started the production of vacuum tube/evacuated tube since 1998.
Annual production capacity of 5 million pieces.
Daily production capacity of 20000 pieces tubes.
1. Total length of scuff on out tube should be less than 1/3 of length of tube.
2.Inner Tube Support: Support be of the same color and installled in approrite possition
3. Absorption ≥91%
4. Emission ≤ 5.9%
5. Thickness =1.6mm
6. Weight : 2KG
7. Average Heat Loss Coefficient :U=0.51W/(m.℃)
8. Stagnation Coefficient: Dia 58mm: H≤4.5MJ/㎡
9. Solar Exposure Coefficient: 238㎡.℃/KW
10. Glass Transmittance: 0.920(AM1.5)
11. Vaccum :P≤5.0*10-2pa
Contact Person: Guo
Address: No. 30766 East Jingshi Road,Jinan,Shandong