full glass double tube Tirple layer solar vacuum tube

No.

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

U_LT= 0.4-0.6w/(m².°C)

14

Mechanical Shock Performance

Φ≤30mm

15

Amount of Solar Radiation under Stagnation

H=3.7~4.2 MJ/m²(58mm)

H=2.9~3.2MJ/m²(47mm)