Single-target vacuum tube

Group Solar Vacuum Tube
PriceUS $2.3-5 / set
Min. Order 1000 set
Terms of Payment Western Union, T/T
Update Time 2018-11-27
Item specifics
TypeVacuum Solar Collector
ApplicationWater Heater
Pipe MaterialGlass
Description

Single-target vacuum 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.)

 

Single-target vacuum tube 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.

 

Single-target vacuum tube

 

 Single-target vacuum tube

 

Single-target vacuum tube

 

Single-target vacuum tube