Why do HP Solar Hot Water Systems use a hot water tank with a heat exchanger?
Water with chlorides cannot be used within the collector. A closed loop system eliminates the possibility that chlorides, present in cistern (due to salt spray) and chlorinated water in the Caribbean, could enter the collector from a buildings water source. Chloride-free distilled water is used in the collector. A heat exchanger inside the hot water tank transfers heat to the potable water inside the tank. Using chloride-free water allows the manufacturer to warranty the collector for 5-years.
