three coating double tubes all glass solar vacuum tube

Parameter

Triple Target Tube
 
1
 Structure
 Full-glass Double-tube Coaxial Structure
 
2
 Material
 Borosilicate Glass 3.3
 
3
 Outer Tube Diameter
 Φ47±0.7mm  &=1.6mm Φ58±0.7mm  &=1.6mm
 
4
 Inner Tube Diameter
 Φ37±0.7mm  &=1.9mm±0.5mm

Φ47±0.7mm  &=1.9mm±0.5mm
 
5
 Length
 47-1500mm/1600mm/1800mm

58-1500mm/1600mm/1800mm/2000mm/2100mm
 
7
 Absorbing Coating Structure
 Red Copper, Stainless Steel and Aluminum
 
8
 Deposition Method
 Triple-target DC Reactive Magnetic Sputtering
 
9
 Absorption Ratio
 0.90-0.93(AM1.5)
 
10
 Emission Ratio
 0.04-0.06(80°C±5°C)
 
11
 Interlayer Vacuum
 P≤2×10¯³ (Pa)
 
12
 Stagnation Temperature
 250°C
 
13
 Average Heat Loss Coefficient
 ULT= 0.4-0.6w/(m2°C)
 
14
 Mechanical Shock Performance
 Φ≤30mmcooper 
15
 Amount of Solar Radiation under Stagnation
 H=3.7~4.2 MJ/2(58mm)

H=2.9~3.2MJ/2(47mm)