Tongxin Three Target Purple Golden Vacuum Tube

solar vacuum tube
1) high cold resistence
2) OEM provided
3) ISO9001:2000
4) Lifetime:over 15 years
solar vacuum tube
1.Our company is a manufacturer of solar products with well-equipped testing equipment and strong technical force.
2.With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in energy and other industries.
3.Our products have gained ISO9001:2000 authentication.
4.We also provide OEM business and customized solar system.



Structure
All glass double-tube co-axial structure
Glass material
High borosilicate 3.3 glass
External pipe diameter and thickness
Φ=47±0.7mm &=1.6mm Φ=58±0.7mm &=1.6mm Φ=70±0.7mm &=2.0mm
Internal pipe diameter and thickness
Φ=37±0.7mm &=1.6mm Φ=47±0.7mm &=1.6mm Φ=58±0.7mm &=1.6mm
Pipe length
1200mm 1500mm 1600mm 1800mm 2000mm 2100mm
Absorption coating property
Structure
Cu/SS-ALN(H)/SS-ALN(L)/ALN
Sediment method

3 target magnetron sputtering plating
Specific absorption

0.93~0.96
Emission ratio

0.04~0.06
Vacuum tightness
5.0*10–³Pa
Idle sunning property parameters
260-300m2°c/kw
Solar irradiation for obtaining a preset water tempereture
H≤4.7MJ/m2
Φ=58
H=3.7-4.2ML/m2
H≤3.7MJ/m2
Φ=47
H=2.9-3.2MJ/m2
Average heat loss coefficient
0.4-0.7W/m2°c
Resist hailstone
Φ=25mm
Resist cold
minus 30 degree