Three high corrugation vacuum tube

Specification:

Structure

All-glass double-tube co-axial structure

Glass material

High borosilicate 3.3 glass

External pipe diameter and thickness

dia.=47±0.7mm  &=1.6mm    dia.=58±0.7mm  &=1.6mm

dia.=70±0.7mm  &=2.0mm

Internal pipe diameter and thickness

dia.=37±0.7mm  &=1.6mm    dia.=47±0.7mm  &=1.6mm

dia.=58±0.7mm  &=1.6mm

Pipe length

1500mm 1600mm  1800mm1900mm 2100mm

Absorptive coating property

Structure

copper/aluminum/steel

Sediment method

Single target magnetron sputtering plating

Specific absorption

as=0.88~0.92(AM1.5)

Emission ratio

0.05~0.075(80°C±5°C)

Vacuum tightness

P≤5.0×10-³Pa

Idle sunning property parameters

Y= 220 ~ 260m²°C/KW

Average heat loss coefficient

Ult=0.86W/m2