Gold Member Since 2016
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Dezhou Gaia Solar Energy Co., Ltd.

Solar Vacuum Tubes, Vacuum Glass Tube, Solar Water Heating manufacturer / supplier in China, offering Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube, New Design Health Camping Solar Cooker Stove Oven, Solar Thermodynamic Tube Absorbers Water Heater Cooper and so on.

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Supplier Homepage Product ETC tube Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube

Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube

Purchase Qty.:
(Pieces)
1,000-4,049 4,050+
FOB Unit Price: US $3.95 US $3.86
Purchase Qty. (Pieces) FOB Unit Price
1,000-4,049 US $3.95
4,050+ US $3.86
Get Latest Price
Production Capacity: 7000pieces/Day
Transport Package: Export Standard Packing
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: 70*2100mm
  • Type: Double Vacuum Heating Tube
  • Application: Water Heater, Solar Thermal, Air Conditioning System
  • Pressurized: Pressurized
  • Glass Material: High Borosilicate Glass
  • Outer Tube Diameter: 70mm
  • Wall Thickness: 1.6mm
  • Trademark: Gaia Solar
  • HS Code: 8419901000
  • Condition: New
  • Certification: ISO
  • Pipe Material: Glass
  • Structure: All-Glass Concentric Tube Geometry
  • Length: 2100mm
  • Inner Tube Diameter: 58mm
  • Transmittance of Outer Tube: 0.93
  • Origin: Dezhou, Shandong
Product Description
Products Description

The evacuated tube is the key component to all the thermal heaters and system. It's similar to a conventional Dewar flask and consists of two borosilicate glass tubes, resistant to high chemical and thermal shock. The outer side of the inner tube is coated with a sputtered solar selective surface. This coated inner tube is closed at one end and sealed at the other end to the outer tube. The annular space between the outer tube and inner tube is evacuated to avoid heat loss in conduction and convection. The key element determines function of tube is the technology of the film coating, Gaia Solar tube is the best efficiency tube you can find in China, with the highest absorptance rate of near 97% with common rate of 94% and lowest emission rate near 3% with common rate of 5%. 





Parameters
 

ConstructionALN/ALN-SS/Cu/ Glass
Method of DepositionDC reactive sputtering
Absorptance 94%
Variation along Tube Length3%
Emittance < 6% (100°[1](C)
Vacuum Gas Pressure£ 5 x 10-3 Pa
Stagnation Temperature (typical)³ 270 °[1](C
Recommended Working Temperature£ 150 °[1](C
Heat Loss Coefficient of Collector Tube£ 0.85W / (M2·[1]°[1](C)




Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube


Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube


Thermal Solar Tube Borosilicate 3.3 Color, 70mm Solar Glass Vacuum Tube

 
 

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