Description

Unpressurized solar water heater Descripation: The design of solar water heater uses the principle of Thermosyphon. This type of system does not use heatpipes; instead the water is filled into the tubes, which in turn heat the header tank (which can vary between *5 and **0litres) by ***** 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 ***** type is commonly employed in hot countries such as Turkey, Greece, Mediterranean, Africa etc. Features and Details 1) Reliable and efficient with twin-glass solar tubes 2) Easy plug-in installation 3) Outer tank material: stainless steel plate or powder coated color steel sheet 4) Inner tank material: 0.5mm thick SUS**4 food grade stainless steel plate 5) Frame material: 1.2mm stainless steel 6) Superior heat preservation ensured by *0 - *5mm polyurethane foam insulation layer Outer Tank: stainless steel 0.4mm Inner Tank: stainless steel **4 0.4mm Solar Absorber: glass vacuum tube Dimeter *7mm×1.5M(SFVA***5) Solar Absorber: glass vacuum tube Dimeter *8mm×1.8M(SFVA***8) Polyurethane foam layer: 5.5cm Frame: stainless steel 1.2mm The Principle of Thermosyphon: Because of the larger proportion of hot water than cold water, cold water flows downward and hot water goes upward. The water will be heated continuousl between water tank and vacuum tube. In other words, hot water always floats on cold water. The hot-water flows to the water tank from the vacuum tubes. Because of the proportion, cold water flows to vacuum tubes from the water tank. The cold water is heated in vacuum tubes.After it becomes hot water, it flows to water tank again. The water circulates constantly between water tank and vacuum tubes; the cold water in water tank will be hotter and hotter. Finally, all cold water will be heated to be hot water. This is the heating course.