|
 |
Model |
SQ |
| Material |
High boron silicon glass |
| Film |
A-N/A |
| |
Solar selective absorbing coating |
| |
|
| |
|
| |
|
|
Features:
1) Super and strong absorption
2) Siphonage makes heat commutation faster
3) The hollow layer to reduce water stagnation
4) The vacuum layer to have super and strong preservation
Specifications:
MODEL
ITEMS |
GB |
SQ |
Configuration |
Double-layer concentric boronsillicate glass tubes |
Three-layer concentric boronsillicate glass tubes |
Glass thermal expansion coefficient |
3.3*10-6/℃ |
3.3*10-6/℃ |
3.3*10-6/℃ |
3.3*10-6/℃ |
Diameter of outer tube |
φ47 |
φ58 |
φ58 |
φ70 |
Diameter of absorber tube |
φ37 |
φ47 |
φ47 |
φ58 |
Diameter of hollow tube |
|
|
φ37 |
φ37 |
Thickness |
1.5mm(±0.1mm) |
1.7mm(±0.1mm) |
1.7mm(±0.1mm) |
2.0mm(±0.1mm) |
Transmittance of outer tube |
0.91 |
0.91 |
0.91 |
0.91 |
Length |
1600mm |
1800mm |
1800mm |
2000mm |
Solar selective absorbing coating |
Al-N/Al |
Al-N/Al |
Al-N/Al |
Al-N/Al |
Absorptance(AM1.5) |
0.92 |
0.92 |
0.92 |
0.92 |
Emittance |
0.07 |
0.07 |
0.07 |
0.07 |
Vacuum |
≤5*10-3Pa |
≤5*10-3Pa |
≤5*10-3Pa |
≤5*10-3Pa |
Stagnation Temperature |
230℃ |
230℃ |
230℃ |
230℃ |
Heat loss coefficient |
≤0.70W/(m2*℃) |
≤0.70W/(m2*℃) |
≤0.70W/(m2*℃) |
≤0.70W/(m2*℃) |
Hailstone resistance |
hailstone diameterФ25mm |
hailstone diameterФ25mm |
hailstone diameterФ25mm |
hailstone diameterФ25mm |
Pressure-endure ability |
1mPa |
1mPa |
1mPa |
1mPa |
|
|
|
|
|
