| Length | 1800mm |
| Outer Tube Diameter | 58mm |
| Inner Tube Diameter | 47mm |
| Material | Borosilicate Glass 3.3 |
| Absorbance | ≥ 0.93 |
| Transmittance | ≥ 0.89 |
| Vacuum | 5 x 10-3Pa |
| Daily Solar Absorbance | 7.9MJ/m2 |
| Heat Pipe | |
|---|---|
| Material | Copper |
| Heat Conducting Fin | Aluminium |
| Thermo-stability | ≥ 250 |
| Heat Transfer Coefficient | 0.2°C |
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