Solar systems NZ Surply Vacuum tube solar water heating systems All Stainless steel inner and outer tanks .
(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tube is coated with a selective surface that absorbs solar energy well but inhibits radiative heat loss.The air is withdrawn ("evacuated") from the space between the two glass tubes to form a vacuum, which eliminates conductive and convective heat loss.These tubes perform very well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 low temperatures. 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 pipe configuration.the Solar Charleston uses a high efficiency heat pipe and heat transfer fin design to conduct the heat from within the evacuated tube up to the header.
1.Outer tank: SUS304-2B stainless steel
2.Inner tank: SUS304-2B or 316 food-grade stainless steel thickness≥0.5
3.Sealing Ring: Excellenrt Silica gel material. life is twice longer than common Silica gel.
4.Vacuum tuber: High-efficient vacuum tube
*High-Efficient heat-collection function: New generation o vacuum tubes, use molecular nanotechnology, greatly enhance heat-absorption by 20 percent, higher water temperatures.
*Adopts the international advanced film-coating technology, solar thermal conversion rates extremely high, absorbing heat even in cloudy weather.
*Vacuum tube strictly choose high-borosilicate glass 3.3 so that it has low coefficient of thermal expansion and higher intensity. Hail-resistance:25mm
5.Insulation: 55mm polyurethane the cell is small and uniform reasonable density excellent insulation
6.Frame: thicker stainless steel , Anti-corrosive.and Anti-ultraviolet, installed in the slope and flat place freely.Strengthen hail-resistance. Angle 20-80 degree.Through oxidation process.It increase wind resistance.,life is longer than common galv frame. Beautiful appearance.
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HIGH QUALITY SIMPLE SOLAR SYSTEM AT A GREAT PRICE