Product Details

Three elements solar vacuum tube

spec. as following

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

Length	1200mm	1500mm	1500mm	1800mm
Glass Thermal Energy Parameter	3.3*10^-6/	3.3*10^-6/	3.3*10^-6/	3.3*10^-6/
Outer Glass Tube Diameter	47MM	47MM	58MM	58MM
Inner Glass Tube Diameter	37MM	37MM	47MM	47MM
Thickness of the Glass Tube	1.6MM	1.6MM	1.8MM	1.8MM

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

a. Absorbance: 12% higher.

b. Emission Ration: 30-49% lower.

c. In alpine area, copper ions 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.