Three high Vacuum Solar Collector: advantage of super absorbance low heat loss, quick temp. rising, reliable quality, 5years war

Three high Vacuum Solar Collector - solar vacuum tube has property and spec. as following:

Spec.

1.  All-glass double-tube co-axial structure, high borosilicate 3.3 glass

2. Transmission Ratio of the Outer Glass Tube

3. Structure: Cu/SS-ALN(H)/SS-ALN(L)/ALN

4.  Sediment method: 3 target magnertron sputtering plating

Comparing to Al-N-Al vacuum tube, it has advantages in cold area as following:

Advantages

a. Absorbance: 12% higher

b. Emission Ration: 30-49% lower.

c. In alpine area, copper irons emission ration is lower than that of aluminum ion. So it could work properly even circumstance temp. is lower than -30Deg C.

d. Stainless steel ion has performance of high temp. resistant, anti-stagnation temp. coating will not decay or get aging or disappears.

Size:

Dia. 47 with length of 1500mm.

Dia. 58 with length of 1500mm

Dia. 58 with length of 1600mm

Dia. 58 with length of 2000mm.