Solar collector tube introduction

Feature:

1 Quality warranty :15 years

2. Quickly thermal collecting efficiency.

3. It works fine under cold weather and area.

Three kind of solar collector:

1.Common :evacuated collector tubes.

2. High-efficiency: Three-target evacuated collector tubes: blue and black-golden

3. High-efficiency: Three-target evacuated collector tubes: dark-blue,purple-golden (purple and golden)

Solar evacuated collector tubes technical data:

Dimension	Φ47	Φ58
Material of tubes	3.3 high borosilicate	3.3 high borosilicate
Glass expansion ratio	3.3±0.1X10-6 k-1	3.3±0.1X10-6 k-1
Outer diameter of tubes	Φ47±0.7	Φ58±0.7
Inner diameter of tubes	Φ37±0.7	Φ47±0.7
Thickness of glass	1.6±0.15	1.6±0.15
Transmittance	≥0.89	≥0.89
Selective coating	SS-CU-AL-N/AL	SS-CU-AL-N/AL
Adsorptivity	≥0.86(AM1.5)	≥0.86(AM1.5)
Emissivity	≤0.080(80±5)	≤0.080(80±5)
Vacuum degree	≤5.0 X 10-3Pa	≤5.0 X 10-3Pa
Collecting performance under sunshine	≥190m2/kw	≥190m2/kw
Hailstone resistance	25mm	25mm

Start up fast and collect solar energy fully

Unique super pure copper surface,allowing lower reflection and minimal heat loss.

High level vacuum ensure operation under cold weather.

Long time warranty to 15 years