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solar vacuum tube 58x1800mm

Categories solar water heater accessory
Brand Name: RAVEN NEW ENERGY
Model Number: 58/1800
Certification: CE
Place of Origin: CHINA
MOQ: 50pcs
Price: 2USD-5USD/PCS
Payment Terms: Western Union, T/T
Supply Ability: 200000PCS/ MONTH
Delivery Time: 10days
Packaging Details: carton
Name: solar vacuum tube
Model: 58/1800
Material: high borosilicate glass 3.3, 1.6mm
Outer tube diameter: 58mm
Inner tube diameter: 47mm
Coating: three target , Cu/ALN-SS/ALN
Vacuum degree: 3.5x10-3Pa
Tube length: 1800mm
Absorption rate: 93%
Emission rate: 4%
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    solar vacuum tube 58x1800mm

    Solar Vacuum tube 58/1800mm



    Solar Vacuum Tube
    Model58*1800
    Outer Diameter/Length of Tube φ58mm/1800mm 
    StructureAll glass double tube co-axial
    Glass materialHigh borosilicate 3.3 glass
    Absorptive coating propertyMaterialCu/SS-ALN(H)/SS-ALN(L)AlN
    Sediment method3 high magnertron sputtering plation
    Specific absorptionAs=0.93~0.96(AM1.5)
    Emission ratio∑h=0.04~0.0.06(80°C±5°C)
    Vacuum degreeP≤5×10-3Pa
    Idle sunning property parametersY=200~300㎡.℃/KW
    Solar irradiation for obtaining a preset water temperatureH≤4.7MJ/㎡(Φ58), H≤3.71~4.2MJ/㎡
    Average heat loss coefficientULT=0.4~0.6W/(㎡.℃)
    Loading Qty (piece) 40HQ 
     6180 

    Vacuum tubes assimliate the advanced 3 layers of sputtering deposition of trivalent element technology, high borosilicate glass, gradual change of ALN/ALN-SS/CU selective complex absorptive coating. And these make vacuum tubes have high performance of absorptance and low reflection ratio. Through the interlayer, vacuum has a unique effect of thermo, with its temperature up to 380 Celsius degree of ideal sunning, performing a strong heating ability.





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