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Specifications
Solar evacuated tubeating material:SS-C/Cu
2.certificate:CE ISO9001 TS
3.OEM is available
Material: Borosilicate glass 3.3
We only source from good manufacturers the best borosilicate glass 3.3 that is produced in China. It should have the ability to withstand high temperature and high pressure,as well as high sunlight transparancy which is above 0.91. The best material is the first step to produce products with highest quality. We are always paying not only more money but also great attention to this.
Selective coating SS-AlN/Cu
The out surface of the ineer tube is triple coated with stainless steel, aluminum and copper when adopting the newest magnetron sputtering coating technology. This type of selective coating (SS-AlN/Cu) can withstand very high temperature. This is important because the tube is exposed in high temperature to evacuate the gas in the jacket between the inner tube and the outer tube. The solar energy absorption ability should be above 0.93.
Vacuum jacket
The inner and the outer tube been sealed together, the tube is exposed in high temperature to evacuate the gas from the jacket between the inner and the outer tube. The vacuum degree should be lower than 3.0×10-3(Pa). The vacuum jacket is an ideal insullation protecting the heat energy in the tube.
Specification
S.NO. |
Parameters |
Model 58mm×1800mm |
1 |
Length |
1500mm |
2 |
Outer Tube Diameter |
47mm |
3 |
Inner Tube Diameter |
37mm |
4 |
Glass Thickness |
1.6mm |
5 |
Material |
Borosilicate Glass 3.3 |
6 |
Coating |
SS-AlN/Cu |
7 |
Absorptance |
0.90-0.95(AM1.5) |
8 |
Vacuum degree |
P≤3×10-3 (Pa) |
9 |
Emittance |
0.04-0.06(80°C±5°C) |
10 |
Thermal Expansion |
3.3 × 10-6°C |
11 |
Stagnation Temperature |
260-300°C |
12 |
Max Strength |
0.8MPa |
13 |
Transmittance of Glass |
0.91 |
14 |
Heat loss |
ULT =0.4~0.6W/(m2°C) |
15 |
Hail resistance |
Hail diameter ≤Φ25mm |
16 |
Configuration |
Two concentric borosilicate glass |
17 |
Certification |
ISO 9001 2008 |
18 |
Warranty |
10 years |
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