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

Model no.:

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 ;

Vacuum tube
Three target vacuum tube solar collector has property and spec.as following:

Three target vacuum tube collector has advantages of super absorbance, low heat loss, quick temp.