Vacuum Tube Solar Water Heater

Vacuum Tube  Solar Water Heater

The SFA evacuated tube solar water heating panel is the simplest vacuum tube system available. The stainless steel cylinder at the top of the panel is the well-insulated hot water cylinder - it is double skinned and has two inches of polyurethane foam between the two skins. The stainless steel construction means that it will not corrode, and its simplicity requires no ancillary components. The vacuum tubes are double-skinned, with a vacuum between the two layers of glass. The water in the cylinder is able to enter the central section of each vacuum tube, where it is heated by the sun. The tubes themselves are 93% efficient - so they are able to heat water even in low sunshine or when ambient air temperatures are low. The warmer, less dense water rises into the storage cylinder, displacing cooler water which descends into the tube for heating. 

The design of this type uses the principle of Thermosyphon. This type of system does not use heat pipes; instead the water is filled into the tubes, which in turn heat the header tank (which can vary between 85 and 220litres) by convection.It has obvious advantages:with a tank itself and the fittings are very low-cost. However, it is less functional, too large to appear roof-integrated, cannot accept pressure system kits.This type is commonly employed in hot countries such as Turkey, Greece, Mediterranean, Africa etc.

Solar water heater Feature: 

 1)Beautiful in design and very convenient for family use 
2) Reliable and efficient with twin-glass solar tubes 
3) Easy plug-in installation 
4) Outer tank material: stainless steel plate or powder coated color steel sheet 
5) Inner tank material: 0.5mm thick SUS304 food grade stainless steel plate 
6) Frame material: color steel 
7) Superior heat preservation ensured by 50 - 65mm polyurethane foam insulation layer. Enjoy the hot water in cold evening 
8) No corrosion: It can prevent corrosion lead from chorine ion, sea water, salt water or buck water 
9) No leakage: Apply for special anti-corrosin layer 
10)Sanitary water: The qualities showed above make it possible that water quality is pure and no twice pollution 
11)Designing the  immersion heater hole in advance for the cloudy, snowy, rainy days 

Notice : 

SFA series Solar water heaters popular in Asia,Africa,torrid zone and warm area.

1) The angle of the frame can be changed in production as the local latitude condition of the customers. We can design the suitable angle for the customers 
2) We offer the spare accessories and tubes for your order for free 
3) We can offer the different material of water tank,frame anf tubes according to your request 
4) We offer the fittings of this system,like immersion heater,water supplier,magnesium and so on.You can buy according to your requirement