Three-target Solar Vacuum Tube

Dia. 58 with length of 2000mm..

Dia. 58 with length of 1600mm.

Dia. 58 with length of 1500mm.

Dia. 47 with length of 1500mm.

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

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.

b.      Emission Ration: 30-49% lower.

a.      Absorbance: 12% higher.

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

4.  Sediment method: 3 target magnertron sputtering plating ;

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

2. Transmission Ratio of the Outer Glass Tube;

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

Three-target all-glass vacuum tube has property and spec. as following:

Three target evacuated solar vacuum tube has advantage of super absorbance low heat loss, quick temp. rising, reliable quality.