3-Hi Solar Core vacuum tube

3-Hi Solar Core vacuum tube Details

3-Hi Solar Core vacuum tube

3-Hi Solar Core vacuum tube Description

1.High solar-thermal conversion and low heat loss
2.Stable advanced coating up to 380
3.Long time warranty to 15 years
4.High level vacuum ensure operation under cold weather
Advanced solar selective coatings
Advanced solar selective coatings employ two patent technologies :
(1) double cermet film structure with the highest photothermal efficiency
(2) metal-Aluminum nitride cermet (M-AlN) materials deposited by a novel sputtering technology.
The typical film structure of M-AlN cermet selective surfaces

Models
47×150
58×180

Weight
1.35±0.12kg
2.29±0.18kg

Structure
All glass coaxial double-layer tubes
All glass coaxial double-layer tubes

Outer tube diameter
47±0.7mm
58±0.7mm

Inner tube diameter
37±0.7mm
47±0.7mm

Outer Tube thickness
1.6±0.15mm
1.8±0.15mm

Inner tube thickness
1.6±0.15mm
1.6±0.15mm

Tubes length
1542±4mm
1812±4mm

Material of coating
AlN/AIN-SS/Cu
AlN/AIN-SS/CU

Absorptance
0.94~0.96
0.94~0.96

Emittance
0.04~0.06
0.04~0.06

Vacuum
P≤5×10-3pa
P≤5×10-3pa

Transmittance of Outer Tube
0.91
0.91

Stagnation temperature (height)
270~300
270~300

Heat-loss coefficient
≤0.6w/ m2* )
≤0.6 w/ (m2* )

Bearing hailstone ability
hailstone diameter25mm
hailstone diameter25mm

Pressure-endure ability
1MPa
1MPa

Other Information