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- Contact Person : Mr. Xuan Sean
- Company Name : Zhejiang Shuqin New Energy Tech. Co., Ltd.
- Tel : 86-575-87277978
- Fax : 86-575-87234666
- Address : Zhejiang,Zhuji,Wandong Industrial Zone, Zhuji City, Zhejiang Province, China
- Country/Region : China
- Zip : 311800
3 targets, dia. 47mm, solar collector tube
Product Detailed
Related Categories:Solar Water Heater Parts
solar vacuum tubes
1.borosilicate 3.3 glass
2.magnetron sputterd
3.multiple selectively absorbing layers
4.optional length
spec. details of solar vacuum tubes
| Tri-targets vacuum magnetron sputtering | |
| Tube structure | dual tubes, coaxial |
| Tube material | Borosilicate glass 3.3 |
| Outer tube Dia. and thickness | 47mm |
| Inner tube Dia. and thickness | 37mm |
| Tube length | 1500-2100mm |
| Selective absorbing coating | CU/SS-ALN/ALN |
| Sediment method | Magnetron sputtering |
| Vacuum degree | 5*10-3 |
| Outer tube transmittance | ≥91% |
| Absorption rate | ≥96% |
| Emittance rate | ≤6% |
| heat loss efficient | ≤0.6w/M2°C |
| Stagnation tempreture | 260~300°C |
| thermal expansion coefficient | 3.3*10-6 |
| Pressure endurance | 1mpa |
| Impact endurance( dia.) | ≤25mm hailstone |
| Service life | 15year |
3 targets, dia. 47mm, solar collector tube
