High efficiency evacuated solar collector tubes

outer tube diameter: 58/47mm inner tube diameter: 47/37mm length:1.5-1.8m absorptance:0.94~0.96 emittance:0.04~0.06

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: 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

Our solar collector can start up fast and collects solar energy fully, there is no need to wait and the hot water is available immediately, high level vacuum ensure operation under cold weather, and the unique super copper surface allowing lower reflection and minimal heat loss, the current products mainly include: diameter: 47/58mm, and the length is 1800mm, but we can also provide products as your request. Long time warranty for 15 years.

Absorptance of three high efficiency solar vacuum tube increased by 12%, and  launch reduced by 30 to 40 percent, the super 

absorbing, heat loss less, warming faster. Efficient tube, the super absorbing, thermal efficiency is high, warming faster, in the same light conditions, can create more and  higher temperature water than common tubes ;  high cold tube, copper ions for the launch of aluminum ion mantua, so low 0.2 thermal loss rarely, in high cold  environment can still work normally. hot water turn out as usual under- 30 ºC. high temperature special efficiency tube, because the membrane layer stainless steel ion high temperature resistant, fight air drying. Membrane layer under the condition of the 400 ºC, not attenuation, not aging, discoloration.

High efficiency evacuated solar collector tubes