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Help CenterThree Layer Glass Vacuum Tube for Solar Water Heater
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Features:
1) High heat effectiveness: higher than all glass evacuated solar collector tube by 15%
2) heat pipes conduction: successfully prevents the defects of tube breakage and low power output caused by water fouling and deposits or dust and sand
3) Prevents the tube from being easily broken caused by volume expansion when water freezes in the frigid season
4) Low thermal capacity makes the tube start up quickly
5) Energy output within only 2 minutes of sunshine
6) Insulation temperature can reach 250deg;C, average heat efficiency can still be more than 50%; even under -50deg;C
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 |
|
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