Solar Water Heating uses solar evacuated collectors to capture the sun’s radiant energy and converts it in to thermal heat. The solar heat is then either transferred to usable energy or stored in a heat sink such as a large solar water tank or concrete slab and released as needed.
Solar water heaters use the sun to heat either water or a heat-transfer fluid in the collector. The pumping station and controller cause this hot fluid to circulate through the specially insulated solar piping and the into a solar storage tank that normally contains an internal heat exchanger which indirectly heats the mass of water. Solar water tanksSolar water tanks The tank can be as simple as a modified standard water heater, but more specific solar water tanks are recommended for better performance. Most solar water tanks will also feature a back up electric element built into the unit. The brains of every solar water heating system is Solar Controller and Pump Station. This includes all items required to make the system function optimally and safely. Items such as temperature controllers, pumps, expansion vessels, pressure safety valves, fill and drain spouts all part of a properly installed solar system.
Most solar water-heating system have four main parts:
(1) a solar evacuate tube collector and
(2) a solar storage tank
(3) Solar Controller and Pump Station
(4) Special Solar Piping.