Solar Vacuum Tube

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Normal Solar Vacuum Tube

Normal solarvacuum tube :Its membrane layer at bottom is typically made of aluminum. Absorption layer and antireflective layer is compound of Nitrogen and aluminums ion., which bears high thermal cond

    1. Detailed information

    Normal solarvacuum tube :Its membrane layer at bottom is typically made of aluminum. Absorption layer and antireflective layer is compound of Nitrogen and aluminums ion., which bears high thermal conductivity . And the membranous layer is about 0.3 micron.

    Normal solar vacuum tube is very popular among solar tubes because it not only owns the mature production process, but also has the competitive prices.

    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,    dia.=58±0.5mm  &=1.6mm,

    dia.=70±0.5mm  &=2.0mm,  

     

    Internal Pipe

    Diameter & Thickness

    dia.=37±0.7mm  &=1.6mm,    dia.=47±0.7mm  &=1.6mm, dia.=58±0.7mm  &=2.0mm,

    Pipe Length

    800,1200,1500mm, 1600mm, 1800mm, 1900mm, 2000mm,2100mm

    Absorptive Coating Property

    Structure

    Cu/SS-ALN(H)/SS-ALN(L)/ALN

    Sediment Method

    Three Layer Magnetron Sputtering Plating

    Specific Absorption

    as=0.93~0.96(AM1.5)

    Emission Ratio

    0.04~0.06(80°C±5°C)

    Vacuum

    P≤5.0×10-3Pa

    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

     

    Solar hot water system

    Copyright © 2015 Haining Mayca Solar Energy Technology Co.,Ltd.
    Professionally manufactures solar water heater,solar collector. All rights reserved.

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