Solar Water Heater

Non-pressure solar water heater is a kind of compact system of solar collector and water storage tank. The whole system relies on the different density of cold water and hot water, thus Non-pressure solar water heater also called thermo-siphon solar water heater. The system can work without the circulation pump and no heat pipe connection. Cold water directly filled into the vacuum tubes, the vacuum tubes gather energy and heat the cold water, the lighter hot water tank and cold water come down then be reheated.

 

That is how the water does circulation by itself. Please see (fig.1) for its working principle. Non-pressure solar water heater system is most economical and suitable product for low latitude countries and regions, especially for Asian, India, Africa, Oceania, South America and South part of North America. Optional accessories: controller and electrical heater.