- Contact Person : Mr. Ma Edwin
- Company Name : Haining City Baoguang Heat Collection Tubes Co., Ltd.
- Tel : 86-573-87860877
- Fax : 86-573-87860677
- Address : Zhejiang,Email us: edwin4cnbg(at)hotmail.com,# 4 Yuanhua Industrial Zone,Haining City, Zhejiang 314416.China
- Country/Region : China
- Zip : 314416
solar evacuated tubes
solar evacuated tubes
Specification
Structure | All-glass concentric dual tube geometry | |
Glass material | Borosilicate glass 3.3 | |
Outer tube diameter | F=58±0.7mm | |
Inner tube diameter | F=47±0.7mm | |
Glass thickness | 1.6mm | |
Tube length | 1500±5mm/1800±5mm or as particular order | |
Absorbing coating properties | Configuration | 1500±5mm/1800±5mm or as particular order |
Construction | Graded Al-N-Al solar selective absorbing coating | |
Method to deposition | 3 target DC magnetron sputtering | |
Absorption | >92% | |
Emittance | <8%(80°C) | |
Vacuum | P<5×10-3 Pa | |
Stagnation parameter | >250°C/KW | |
Solar radiance exposure for obtaining a preset water temperature | <3.7MJ/ | |
Average heat loss coefficient | <0.8W( C) | |
Lifetime | =15years | |
solar evacuated tubes
