Structure

All-glass double-tube co-axial structure

Glass material

High borosilicate 3.3 glass

External pipe diameter and thickness

dia.=47±0.7mm  &=1.6mm            dia.=58±0.7mm  &=1.6mm                        dia.=70±0.7mm  &=2.0mm  

Internal pipe diameter and thickness

dia.=37±0.7mm  &=1.6mm          dia.=47±0.7mm  &=1.6mm            dia.=58±0.7mm  &=1.6mm

Pipe length

1500mm 1600mm 1700mm  1800mm1900mm 2000mm 2100mm

Absorptive coating property

Structure

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

Sediment method

3 target magnertron sputtering plating

Specific absorption

as=0.90~0.93(AM1.5)

Emission ratio

0.05~0.075(80°C±5°C)

Vacuum tightness

P≤5.0×10-³Pa

Idle sunning property parameters

Y= 260 ~ 300m²°C/KW

Solar irradiation for obtaining a preset water temperature

H≤4.7 MJ/ m²

H=3.7~4.2 MJ/ m²

H≤3.7 MJ/ m²

H=2.9~3.2 MJ/ m²

Average heat loss coefficient

Ult=0.4~0.6W/( m².°C)