Two glass integrated vacuum tube(solar tube)

The basic information:

1 Pipe Material:Glass

2 Glass Thickness:2.0mm

3 Hailstone Resistance:28mm

4 Tube Coating:Cu-Ss-Al/N/Al

5 Absorption Efficiency:0.75

6 Stagnation Temp:392f

7 Maximum Service Temperature:203f

8 Transmission Through Glass:92%

9 Absorptivity Coefficient:94%

10 Life span:15years

Detailed description:

 Glass-Glass tubes consists of two glass tubes which are fused together at one end. The inner tube is coated with a selective surface that absorbs solar energy well but inhibits radiative heat loss. The

air is withdrawn ("evacuated") from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss. These tubes perform very well in overcast conditions as

well as lowtemperatures. Because the tube is 100% glass, the problem with loss of vacuum due to a broken seal is greatly minimized. Glass-glass solar tubes may be used in a number of different ways, including

direct flow or heat pipeconfiguration. LONGQUAN SOLAR uses a high efficiency heat pipe and heat transfer fin design to conduct the heat from within the evacuated tube up to the header.

• Brand:
  Longquan Solar & OEM
• Color:
  Produced according to customer requirements
• Place of Origin:
  China
• Price Terms:
  FOB, CIF
• Payment Terms:
  T/T, L/C
• Supply Ability:
  18,000 pcs/day
• Delivery Time:
  7 days/according to the order
• Minimum Order:
  100 pcs