Structure

All-glass double-tube co-axial structure

Glass material

High borosilicate 3.3 glass

External pipe diameter and thickness

Φ=58±0.7mm &=1.6mm

Internal pipe diameter and thickness

Φ=47±0.7mm &=1.6mm

Pipe length

1800mm

Absorptive coating property

Structure

Cu/SS-ALN(H)/SS-ALN(L)/ALN

Sediment method

3 target magnetron sputtering plating

Specific absorption

0.93~0.96(AM1.5)

Emission ratio

0.04~0.06(80°C±5°C)

Vacuum tightness

5.0×10-3Pa

Idle sunning property parameters

260~300m².°C /KW

Solar irradiation for obtaining a preset water temperature

H≤4.7MJ/ m²(Φ58)

H=3.7~4.2MJ/ m²

H≤3.7MJ/ m²(Φ47)

H=2.9~3.2MJ/ m²

Average heat loss coefficient

0.4~0.6W/(m².°C)

Resistant Hail

25mm

Life aged

15 years