Tongxin two target vacuum tube for solar energy system

Solar vacuum tube
1.Material:All glass
2.Lifetime:15 years
3.OEM provided
4.ISO9001:2000
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 & Thickness
dia.=47±0.5mm &=1.6mm, dia.=58±0.5mm &=1.6mm,
dia.=70±0.5mm &=2.0mm,
Internal Pipe
Diameter & Thickness
dia.=37±0.5mm &=1.6mm, dia.=47±0.5mm &=1.6mm,
dia.=58±0.5mm &=1.6mm,
Pipe Length
1500mm, 1600mm, 1700mm, 1800mm, 1900mm, 2000mm
Absorptive Coating Property
Structure
Cu/SS-ALN(H)/SS-ALN(L)/ALN
Sediment Method
Three Layer Magnetron Sputtering Plating
Specific Absorption
as=0.92~0.96(AM1.5)
Emission Ratio
0.01~0.03(80°C±5°C)
Vacuum
P≤2.0×10-3Pa
Idle Sunning Property
Y= 260 ~ 300m²°C/KW
Solar Irradiation for Obtaining a Preset Water Temperature
H≤4.7 MJ/ m²(dia.58)
H=3.7~4.2 MJ/ m²
H≤3.7 MJ/ m²(dia.47)
H=2.9~3.2 MJ/ m²
Average Heat Loss Coefficient
Ult=0.4~0.6W/( m².°C)
Pressure-Endure Ability
0.6Mpa
Hail-Endure Ability
30mm
Lifetime
15years