|
|
|
Vacuum tube |
|
|
| |
|
This product is the most important part to collect the solar energy on the system.
| Model |
Inner Tube(d) |
Outer Tube(D) |
Inner Thickness(m) |
Outer Thickness(m) |
Length(mm) |
| VT-1500/47 |
37 |
47 |
1.6 |
1.6 |
1500 |
| VT-1800/58 |
47 |
58 |
1.6 |
1.7 |
1800 |
| VT-2000/58 |
47 |
58 |
1.6 |
1.7 |
2000 |
| |
| Material |
Borosilicate Glass 3.3 |
| Thermal expansion |
3.3x10-6 OC |
| Absorption Coating |
Al-N/Al |
| Absorptance |
>92% (AM1.5) |
| Stagnation Temperature |
>230oC |
| Heat Loss |
<0.8W/( m2oC ) |
| Emittance <8% (80oC) |
8% (80oC) |
| Vacuum |
<5x103Pa |
| Maximum Strength |
0.8MPa |
| Warranty |
5 years |
  |
|