- Addition Description
1) Unique three-layer absorption technology
2) Unique three-layer stainless steel/red copper/aluminum; heat resisting; prevents peeling off even when the glass gets waxy degeneration
3) Unique three-layer against degeneration, color fading or performance degeneration caused by empty vacuum tube overexposure to the sun, extending the useful life of the product
4) Three layer interference coating technology
5) Unique super pure copper surface - low reflection and minimal heat loss
6) Ideal heat collecting efficiency in extreme cold water; available at a temperature of -30°C
| Dimension | Φ47-1500 | Φ58-1800 |
| Material of Tube | 3.3 High Boron Silicon | 3.3 High Boron Silicon |
| Glass Expansion Ratio | （3．3±0.1）×10-6K-1 | （3．3±0.1）×10-6K-1 |
| Outer Diameter of Tube | Φ47±0.1 | Φ58±0.1 |
| Inner Diameter of Tube | Φ37±0.1 | Φ47±0.1 |
| Thickness of Glass | 1.6±0.1 | 1.6±0.1 |
| Transmittance | ≥0.89 | ≥0.89 |
| Length of Tube | 1500±0.5﹪ | 1800±0.5﹪ |
| Selective Coating | AL-N/AL or SS-CU- AL-N/AL | AL-N/AL or SS-CU- AL-N/AL |
| Absorptivity | ≥0.86(AM1.5) | ≥0.86(AM1.5) |
| Emissivity | ≤0.080(80℃±5℃) | ≤0.080(80℃±5℃) |
| Vacuum Degree | ≤5.0×10-3Pa | ≤5.0×10-3Pa |
| Collecting Performance Parameter under Sunshine | ≥190m2℃/kw | ≥190m2℃/kw |
| Hailstone Resistance | Ф25mm | Ф25mm |
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Brand:Longquan Solar & OEM
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Color:Produced according to customer requirements
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Place of Origin:China
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Price Terms:FOB, CIF
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Payment Terms:T/T, L/C
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Supply Ability:18,000 pcs/day
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Delivery Time:7 days/according to the order
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Minimum Order:100 pcs
- Send Inquiry
Unique three-layer absorption technology; unique three-layer stainless steel/red copper/aluminum; heat resisting; prevents peeling off even when the glass gets waxy degeneration.