Characteristic of this type
All-glass evacuated tube adopts vacuum insulation, and the thermal preservation of water tank is foaming of polyurethane at high pressure. Our products are configured with energy saving standard, which solves the heat loss caused by the heat transfer, heat conductivity and heat radiation.
It has high performance/price rate.
Hailstone resistant vacuum tube
It is steady and credible.
It can be combined with the architecture prefectly
It can be combined with existing pipeline.

Features:
1) Inner tank: sus304-2B stainless steel, advanced welding technique, thickness 0.5mm
2) Out shell: zinc and aluminum coated steel sheet or color steel sheet
3) Corrosion resistant
4) Isolation layer: 50-65mm imported polyurethane foam for superior heat preservation
5) Frame materials: galvanized steel, electrostatic powder coated
6) Type: 15, 18, 20, 24, 30 tubes
7) Capacity: 130-250 liter
Number of Tubes 15-36
Length of Tube 1800 mm
Outer Tube Diameter 58 mm
Inner Tube Diameter 47 mm
Glass Tube Thickness 1.6 mm
Tube Thermal Expansion 3.3 X 10 -6 oC
Tube Material Borosilicate Glass 3.3
Absorptive Coating Graded AI-N/AI
Absorptance > 90% (AM 1.5)
Emittance 7 % (100 oC)
Vacuum P < 0.005 Pa
Stagnation Temperature < 220 oC
Heat Loss < 0.8 W/m2. oC)
Reflector Ginning Alumnium reflector plate
The out cover of the solar connector Color steel.
Frame Zinc coated steel corner sputtering frame
Insulation Polyurethane
Daily efficiency >50%