All-glass vacuum tube


Three-target vacuum tube

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Description

Detailed Product Description:

Just like an automobile engine,the computer CPU,vacuum tube is the core component of the solar water heater. Its performance lies on the actual film coating technology. SIDITE Company adopted a new graded coating technology of Qinghua University,and tube raise the heat.

Technical Data: 
 

Tube  structure

All-glass double-tube co-axial structure

Glass  material

Borosilicate 3.3glass

Outer tube diameter and glass thickness

Φ=47±0.7mm  &=1.6mm ±0.15mm

Φ=58±0.7mm  &=1.6mm ±0.15mm

Φ=70±0.7mm  &=2.0mm ±0.15mm

Inter  tube diameter and glass thickness

Φ=37±0.7mm  &=1.6mm ±0.15mm

Φ=47±0.7mm  &=1.6mm ±0.15mm

Φ=58±0.7mm  &=1.6mm ±0.15mm

Tube length

1200mm,1500mm,1600mm, 1800mm, 1900mm ,2000mm , 2100mm

Absorber coating

Coating material

Cu/SS-AIN

Sediment method

Three Targets magnetron sputtering plating

Absorptivity

a:≥0.93(AM1.5)

Emittance

ε≤6.5% (80°C±5°C)

Vacuum degree

P ≤5.0×10-3 Pa

Transmittance of glass tube

T:≥0.89(AM1.5 ISO9806-1:1994)

Stagnation parameter

Y :200~240 m²°C/kw

Average heat loss

ULT≤0.65W/(m²,°C)

Hail resistance

Φ25 mm

Pressure-endure

0.6 Mpa


 

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