(58*1800mm)High Efficient Three Layer Solar Evacuated Tube

1)higher absorptance,lower emmitance
2)eco-friendly
3)CE,CCC,SGS,ISO9001:2000
4)a shorter delivery time
5)OEM service
(58*1800mm)High Efficient Three Layer Solar Evacuated Tube

Three Layer Solar Evacuated Tube: high thermal efficiency, more durable for low temperature and high temperature. Its membrane layer at bottom is typically made of copper. Absorption layer and antireflective layer is compound of Nitrogen and aluminum, adding some component of stainless steel. Comparing to the general tubes, it maintains more efficient in heat preservation. Meanwhile, the chemical compound in the absorption layer is more pure than normal solar vacuum tube, thus possessing the more efficient absorption rate.

High Efficient Three Layer Solar Evacuated Tube Specification:
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/2.0mm,
dia.=58±0.5mm &=1.6mm/2.0mm,
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, 1800mm, 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)
Solar Irradiation for Obtaining a Preset Water Temperature
H≤3.7 MJ/ m²(dia.47)

Average Heat Loss Coefficient
Ult=0.4~0.6W/( m².°C)
Pressure-Endure Ability
1.0Mpa
Hail-Endure Ability
30mm
Lifetime
15years