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1800mm solar evacuated tube

1800mm solar evacuated tube

1800mm solar evacuated tube
CategoriesSolar Vacuum Tube
AlbumView larger image
BrandInlightsolar
ModelINLIGHT-GT
TypeEvacuated Tube
PressureUnpressurized
Circulation TypeDirect / Open Loop (Active)
CertificationCE
Unit PriceUS $ 1.5-5 / set
FOB portShanghai/Ningbo
Terms of PaymentWestern Union, T/T
Update Time2018-12-11
Detail Information

1800mm solar evacuated tube1800mm solar evacuated tube1800mm solar evacuated tube

 

 1800mm solar evacuated tube

 

Technical Parameters:

 

  Structure

  All-glass double-tube co-axial structure

  Glass material

  High borosilicate 3.3 glass

  External pipe diameter and thickness

  Φ=47±0.7mm  &=1.6mm,  Φ=58±0.7mm  &=1.6mm,  

  Φ=70±0.7mm &=2.0mm

  Internal pipe diameter and thickness

  Φ=37±0.7mm &=1.6mm,  Φ=47±0.7mm  &=1.6mm,  

  Φ=58±0.7mm &=1.6mm

  Pipe length

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

Absorbing coating property

 Structure

  AL/AL-ALN(H)/AL-ALN(L)/ALN

 Sediment method

  Single target magnetron sputtering plating

 Specific  absorption

  as=0.90~0.93(AM1.5)

 Emission ratio

  εh=0.05~0.075(80±5)

  Vacuum tightness

  P≤5.0X10-3Pa

  Idle sunning property parameters

  Y=220~260m2./KW

 Solar irradiation   for obtaining a   preset

water   temperature

  H≤3.7MJ/m2(Φ47)

  H=4.1~4.4MJ/m2

  H≤4.7MJ/m2(Φ58)

  H=3.1~3.4MJ/m2

  Average heat loss coefficient

  ULT=0.6~0.7W/(m2.)

  

Working Principle

All-glass solar vacuum tube, connecting with water tank or manifold, when it works, cold water flows down into the vacuum tube, and there it is heated with solar energy absorbed by the coating outside of inner vacuum tube, the solar will be absorbed efficiently by the coating with little loss of heat because of the vacuum between the inner and outer glass tubes, and when cold water becomes hot, hot water will rise up to water tank or manifold because of the larger proportion to cold water, cold water again flows into solar vacuum tube for another heating process.

 

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