Thermosun is a new type of solar water heater which adopts advanced heat pipe and twin-glass solar tube Technology. The highly efficient and reliable vacuum tube with the special selective coating absorbs the solar energy and converts it into heat. The heat pipe inside transfers the heat rapidly through the condenser to the domestic water. The system includes a high pressure storage tank, which features no evaporation losses as compared to a low pressure model. The tank consists of an inner shell made of stainless steel, 55mm CFC free polyurethane foam insulation (Thermal transfer rate: 0.022W/mK) and a coated galvanized steel outer shell and stainless steel frame. The system has the following advantages: • Closed loop system meaning no direct contact between condenser and domestic water, implying: a) No scaling problems inside the vacuum tubes b) If need arises, a tube can be replaced without emptying the tank. • No sealing rubber is needed and hence no leaking problems • Easy installation of single or multiple units • Low maintenance • Magnesium anode for corrosion protection Advanced Heat Pipe and Glass Vacuum Tube Technology: TECHNOLOGY OF THE HEAT PIPE • Due to its thermo-physical properties, heat transfer rate in the heat pipe could be thousands of times greater than that of the best solid heat conductors of the same dimensions. • When heated above 25 O C, the special fluid inside the heat pipe vaporises. • The vapour rapidly rises to the top of the heat pipe transferring heat. • As the heat is transferred to the domestic water at the condenser, the vapour condenses to form a liquid and returns to the bottom of the heat pipe to once again repeat the process. • Each heat pipe is tested for heat transfer performance and exposed to 250 O C temperatures prior to being approved for use. • Material selection and strict quality control ensure long life expectancy of the heat pipe. Vacuum Heat Pipe Solar Collector Heat pipe Heat transfer fin Inlet All glass tube High pressure inner tank Outlet Hot vapour rise to heat pipe tip Evacuated Tube Copper Heat Pipe Non-toxic liquid Cooled vapour, liquifies and returns to bottom of pipe to repeat cycle