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    70mm * 2100mm solar vacuum tube

    70mm * 2100mm solar vacuum tube
  • Category:
    Solar Vacuum Tube
  • Browse number:
    519
  • Release time:
    2019-04-19 09:33:46
  • INQUIRY

Technical data:


Model


58×1800


58x2100


47×1500


70×2100


Structure


Three goals


Outer tube diameter


58±0.7 mm


58±0.7 mm


47±0.5 mm


70±0.7 mm


Inner tube diameter


47±0.7 mm


47±0.7 mm


37±0.5 mm


47±0.7 mm


Outer tube thickness


1.6 ± 0.15 mm


1.8±0.15 mm


1.6 ± 0.15 mm


2.0±0.15 mm


Inner tube thickness


1.6 ± 0.15 mm


1.8±0.15 mm


1.6 ± 0.15 mm


1.8±0.15 mm


Tube length


1800±5 mm


2100 ± 5 mm


1500±5 mm


2100 ± 5 mm


Coating material


Copper, aluminum, stainless steel


Absorption rate


≥0.92


Emissivity


≤0.06


vacuum


Less than 5.2×10-4Pa


Outer tube transmittance


0.92


Stagnation temperature (height)


270~300°C


Heat loss coefficient


Less than 0.5 w / (m2 * ° C)


Carrying hail ability


30 mm steel ball, 450 mm high


Pressure resistance


1MPa


20GP / 40GP / 40HQ load


Seven thousand three thousand four hundred eighty


2,480, 4,460


Four thousand seven hundred and fifty thousand five hundred and fifty


Three thousand eight hundred and sixty thousand one thousand eight hundred



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