| Tube structure |
All-glass double deck co-axial structure |
| Glass material |
High borosilicate 3.3 glass |
| Outer tube diameter and glass thickness |
| Ø47±0.7mm; Glass thickness 1.6±0.15mm |
| Ø58±0.7mm; Glass thickness 1.6±0.15mm |
| Ø70±0.7mm; Glass thickness 2.0±0.15mm | |
| Inner tube diameter and glass thickness |
| Ø37±0.7mm; Glass thickness 1.6±0.15mm |
| Ø47±0.7mm; Glass thickness 1.6±0.15mm |
| Ø58±0.7mm; Glass thickness 1.6±0.15mm | |
| Tube length |
800mm,1200mm,1500mm,1600mm,
1800mm,1900mm,2000mm,2100mm etc |
Absorption
coating
property |
Coating material |
| Sediment method |
| Absorptivity |
| Emission ratio | |
| AL/AL-ALN(H)/AL-ALN(L)/ALN |
| Single Target magnetron sputtering plating |
| Absorptivity:α =0.90～0.93 (AM1.5) |
| Emission: ε=0.05～0.075(80℃±5℃) | |
| Vacuum degree |
P≤5.0X10-3 (PA) |
| Stagnation temperature (temperature inside of empty evacuated tubes) |
220～260 ℃ |
| Average heat loss |
ULT 0.6～0.7 W/(m2 *℃) |
| Hail resistance |
Ø25 mm |
| Pressure-endure |
1MPa |
