China patented solar vacuum tube
USD $2.5 - $3.5 /Piece
Min.Order:2500 Pieces
Shandong Guangpu Solar Energy Project Co., Ltd.
No. | Parameter | All-glass heat pipe |
1 | Structure | Full-glass double-tube coaxial structure |
2 | Material | Borosilicate glass 3.3 |
3 | Outer Tube Diameter | Φ47±0.7mm &=1.6mm Φ58±0.7mm &=1.6mm |
4 | Inner Tube Diameter | Φ37±0.7mm &=1.9mm±0.5mm Φ47±0.7mm &=1.9mm±0.5mm |
5 | Length | Φ47-1500mm Φ58-1800mm |
6 | Condensing Section Length | Φ47-1500mm &=125mm±5mm Φ58-1800mm &=145mm±5mm |
7 | Base Material | SS-AlNx/Cu |
8 | Deposition Method | Triple-targetDCreactive magnetic sputtering |
9 | Absorption Ratio | 0.92-0.95(AM1.5) |
10 | after Coating | 0.90-0.92(AM1.5) |
11 | Absorption Ratio after Vacuum-pumping | 0.04-0.06(80°C±5°C) |
12 | Emission Ratio | P≤1.0×10¯³ (Pa) |
13 | Vacuum between Inner Tube and Outer Tube | P≤3.0×10¯³ (Pa) |
14 | Vacuum in Inner Tube | Y=260-300m².°C/KM |
15 | Average Heat Loss Coefficient | ULT= 0.4-0.6w/( m².°C) |
16 | Amount of Solar Radiation under Stagnation | H=3.7-4.2 MJ/m² ( 58mm) H=2.9-3.2MJ/ m² (47mm) |