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Categories: Vacuum_Tube -> Standard_Vacuum_Tube
name: Vacuum tube
clicks: 12329 times
Release date: 2011-3-18 9:07:52
Description:

Single Target Vacuum Tube

Each evacuated tube is composed of two concentric glass tubes; the inner one is coated with highly selective layer and it converts solar radiation into thermal energy, as for the outer one, it is a cover to keep the vacuum . Both tubes are fused together and the gap between them is evacuated to achieve excellent thermal vacuum insulation.

Single-target Vacuum Tube Performance and Specification:

Tube structure

All-glass double deck co-axial structure

Glass material

High borosilicate 3.3 glass

Outer tube diameter and glass thickness

Ø58±0.7mm;Glass thickness 1.6±0.15mm

Inner tube diameter and glass thickness

Ø47±0.7mm;Glass thickness 1.6±0.15mm

Tube dimension

58*1800mm

Absorption
coating
property

Coating material

AL/AL-ALN(H)/AL-ALN(L)/ALN

Sediment method

Single target magnetron sputtering plating

Absorptivity

0.90-0.93

Emission ratio

0.05-0.075(800C±50C)

Vacuum degree

P≤5.0X10-3(PA)

Idle sunning property parameters

220-260 m².C/KW

Average heat loss coefficient

ULT=0.6~0.7W/(M2.0C)

Resistant Hail

≤25mm

Useful life

15 years

 

 

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