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kleber solar water heater,solar water heating,solar hot water(Common Vacuum Tube)

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kleber solar water heater,solar water heating,solar hot water(Common Vacuum Tube)

Introduction:

Feature:

High efficiency heat focus vacuum tube is made by the newest nanotechnology ,its absorb floor is made from copper, stainless steel and aluminium by the 12 -floor spatter plating technology. High boron silicon glass is chosen. By the gradually ss-c/cu selective complex coat, the vacuum tube have the high absorptance and low reflectance. The vacuum tube have the heat preservation effect because of its vacuum interlayer and its temperature can be up to 350 degrees.

Specification:DY-VT A:

Length

1500mm

1800mm  

Outer tube diameter

47mm

58mm  

Inner tube diameter  

37mm

47mm  

Weight

 1.3kg  

 2.2kg  

Glass thickness  

1.6mm  

1.6mm  

Material

 Borosilicate Glass 3.3  

Borosilicate Glass 3.3  

Absorptive coating

 Graded A1/N/A1

 Graded A1/N/A1

Vacuum degree

  P<5*10 -3 Pa

  P<5*10 -3 Pa

Thermal expansion  

3.3*10 -6 /degree

3.3*10 -6 /degree

Insolation Temperature

 >200 degrees

 >200 degrees 

Absorptance

 >93%

 >93%

Emittance

<8%

  <8%  

Heat loss

<0.8W/(m2ˇăC)

 <0.8W/(m2ˇăC)  

Maximum strength

 0.8Mpa

0.8Mpa  

Resist cold  

-35 degrees

-35 degrees

Resist hailstone

25mm

25mm 

Resist wind

30m/s  

  30m/s  

Start-up temperature

 <=25 degrees

 <=25 degrees


 
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