Vacuum tube

Vacuum tube: 1) high efficiency 2)the most competitive price 3)ALN/AL-SS/CU Coating 4)Long life-span

vacuum tube :

  

Certifactes: CE, ISO9001; CCC

Specification:

1.Outer Diameter /Inner Diameter : Φ47/37mm; Φ58/47mm ;  Φ70/58mm

2.Length of Tube : 500mm/900mm. 1500mm, 1800mm, 2000mm, 2100mm

3.Material: Borosilicate glass 3.3 , Thickness of tube:1.6± 0.1mm,2.0± mm;

4.Selective absorbing coating :tri-elements coating ALN/ALN-SS/CU

5.Thermal Expansion: 3.3*10-6/k

6.Absorption of Selective Coating: α =90% -93% (AM1.5)

7.Emission of Selective Coating: ξ =5%-7.5%(80 º C± 5º C)

8.Coefficient of Average Heat Loss: 0.6-0.7W/(m2 º

9. 15year life-span

10.10years warranty

Vacuum tube