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Product name | Three target coating solar vacuum tube | Three target coating solar vacuum tube | |||
structure | All-glass double-tube co-axial structure | All-glass double-tube co-axial structure | |||
Glass material | Borosilicate 3.3glass | ||||
Outer tube diameter and glass thickness | Φ=47±0.7mm &=1.6mm ±0.15mm Φ=58±0.7mm &=1.6mm ±0.15mm Φ=70±0.7mm &=2.0mm ±0.15mm | Φ=47±0.7mm &=1.6mm ±0.15mm Φ=58±0.7mm &=1.6mm ±0.15mm Φ=70±0.7mm &=2.0mm ±0.15mm | |||
Inter tube diameter and glass thickness | Φ=37±0.7mm &=1.6mm ±0.15mm Φ=47±0.7mm &=1.6mm ±0.15mm Φ=58±0.7mm &=1.6mm ±0.15mm | Φ=37±0.7mm &=1.6mm ±0.15mm Φ=47±0.7mm &=1.6mm ±0.15mm Φ=58±0.7mm &=1.6mm ±0.15mm | |||
Structure | Cu/SS-ALN | ||||
Sediment method | 3 Targets magnetron sputtering plation | ||||
Absorption ratio | α=0.93~0.96(AM1.5) | ||||
Emission ratio | ε=0.05~0.075(80°C±5°C) | ||||
Thickness | 1.6mm/2.0mm/2.2mm | ||||
Vacuum tightness | 5.0×10-3 Pa | ||||
Heat loss | 0.4 -0.6W/(m2.°C) | ||||
Resist cold | -25°C | ||||
Resist high temperature | 250°C | ||||
Service life | 15 Years |