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.
