Detailed Product Description
Vacuum Tube Solar Collector Feature:
1. Vacuum Tube Material:borosilicate glass 3.3, SS-CU-ALN/AIN absorb coating
2. Vacuum:<5*10-3Pa
3. Manifold Casing:Aluminum alloy
4. Insulation:Rock wool or foamed polyurethane
5. Seal Material:Stabilized high temperature silicon
6. Heat Pipe:copper,outer dia:8mm,inner dia:6.6mm,length:1770mm
7. Absorptivity Coefficient:>92%
8. Life Time:15years