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Solar Tubes
A: Solar evacuated tube
Technical Data
| Material | Borosilicate Glass3.3 |
| Absorptance | > 93%(AM1.5) |
| Emission | < 8%W(80oC) |
| Vacuum | P < 5 * 10opa |
| Stagnation Temperature | > 200oC |
| Suffocation | H=2.639mj/m2 |
| Coefficient of Average Heat Loss | < 0.8W/(m2oc) |
| Maximum Strength | 0.8Mpa |
Specification
| Item | O/I Diameter(mm) | Length(mm) | Package | Coating |
| 1 | 58/47 | 1800 | Carton | AL-N/C |
| 2 | 58/47 | 1500 | Carton | AL-N/C |
| 3 | 47/37 | 1200 | Carton | AL-N/C |
| 4 | 47/37 | 1500 | Carton | AL-N/C |
| 5 | 47/37 | 1800 | Carton | AL-N/C |
| 6 | 47/37 | 1920 | Carton | AL-N/C |
Selective Coating:AL-N/C means Aluninium-Nitrogen/Carbon
B: Heat pipe
| Outer Diameter | Length |
| 70mm | 1700mm |
| 70mm | 1900mm |
| 100mm | 1700mm |
| 100mm | 1900mm |
Technical Data
| 1 | Condenser | 140mm |
| 2 | Solar Absorption, Coating | >= 92% |
| 3 | Emission, Hemisphere | <= 7% |
| 4 | Material | Borosilicate Glass 3.3 |
| 5 | Stagnation Temperature | >=250oC |
| 6 | Vacuum | <= 5 * 10-3pa |
| 7 | Maximum Strength | 0.6MPa |
| 8 | Normal Operating Temperature | 70oC~120oC |
| 9 | Lowest Operating Temperature | -50oC |
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