Highly competitive absorptive solar vacuum Tube(CE solar keymark)

Highly-absorptive Vacuum Tube:
1.highly absorptive, highly durable
2.ISO9001,CE,CCC certificate


Highly absorptive Vacuum Tube
Kaidun Highly-absorptive Vacuum Tube is made of borosilicate glass, which applies the advanced 12-layer of spattering deposition technology of gradual change of ALN/AIN-SS/CU selective absorptive coating.
This makes the vacuum tubes highly absorptive and highly durable to high temperature and low temperature. Meanwhile the vacuum tube features a low reflection ratio. The interlayer gives the tube a unique effect of thermo, and the surface temperature could be as high as 380. It is the key part of the solar water heater and decides the performance of the heating system.



Specification
*Specification of Highly-absorptive Vacuum Tube
A) Structure: all glass concentric dual layer tube
B) Glass material: borosilicate
C) Absorptance: >0.92
D) Emittance: <0.08 (80)
E) Vacuum: <5*10-3 Pa
F) Stagnation: >230 ./KW
G) Average Heat Loss: <0.8 w/ .
H) Service life: more than 15 years

Technical Data of Highly-absorptive Vacuum Tube
Models
Material
Diameter
Length
Coating
Vacuum
Hail resistance
Transmittance
Ø47x1500
borosilicate
47 mm
1500 mm
ALN/AIN-SS/CU
≤5x10
-3
Ø 25 mm
0.91
Ø47x1800
borosilicate
47 mm
1800 mm
ALN/AIN-SS/CU
≤5x10
-3
Ø 25 mm
0.91
Ø58x1800
borosilicate
58 mm
1800 mm
ALN/AIN-SS/CU
≤5x10
-3
Ø 25 mm
0.92
Ø58x2100
borosilicate
58 mm
2100 mm
ALN/AIN-SS/CU
≤5x10
-3
Ø 25 mm
0.91











All glass vacuum tube


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