Split Solar Water Heating System A) Open Loop Solar Water Heating System Components The system comprises of solar collectors, glass-lined storage tank without heat exchanger, circulating pump, expansion vessel and intelligent controller. Description An Open Loop Water Heating System provides many advantages. It is the simplest and typically the least expensive active system to install. There is no heat exchanger, which allows efficient heat transfer directly to the water. The system Operates at standard line pressure. When there is not enough energy for sun, an electrical back up element will be automatically switched on by controller. Features 1)Simple Installation, No Maintenance, Effective operation 2)Flat Plat &Anti-freeze Controller 3)Easy Retrofitting To Existing systems 4)Glass-lined Storage Tank With Electrical Back Up 5)No risk of freezing, equal of solar absorb area, Better efficiency than Evacuated Tube solar collector, But more energy loss. B) Closed Loop Solar Water Heating System Components The system comprises of solar collectors, glass-lined storage tank with single or double heat exchanger, pump station, expansion vessel and intelligent controller. Description The system pump heat-transfer fluids (usually a glycol-water antifreeze mixture) through the solar water heater.Heat exchangers transfer the heat from the fluid to the water that is stored in tanks. The top heat exchange coil to be used for connection to the existing central heating system in the house as backup to produce hot water on cloudy days , at night or in case of large consumption of hot water Single heat exchange coil or double heat exchange coil solar tanks prevent contamination of the household water. Closed-loop glycol system are popular in areas subject to extended subzero temperatures because they offer good freeze protection. It is the preferred option for extremely cold areas. Features 1)Simple Installation, No Maintenance, Effective operation 2)Easy Retrofitting To Existing systems 3)Suitable for single and multiple solar heating Application systems, 4)Preferred option for extremely cold areas and questionable water quality. 5)Incoming potable water is routed to the solar storage tank 6)Double-walled Copper Coil heat exchangers in storage tank prevent contamination of household water.
Jingjiang, China 
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