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Closed loop solar water heater.
The flat plate collectors can be mounted in almost any configuration at great distances from the exchanger.
Closed loop solar water heater systems sometimes referred to as anti freeze or glycol systems include the heat collectors insulated piping a circulating pump an expansion tank a hot water storage tank a heat exchanger solar fluid usually a solution of water and nontoxic propylene glycol antifreeze a controller valves and gauges.
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Propylene glycol and the new bio green are common antifreeze materials.
When the controller senses that the sun is shining and your tank needs a warm up it signals the pump to send water through the black collector panels.
Here s how a solar powered water heater works.
Closed loop solar water heaters have few limitations with collector placement the collector loop is antifreeze filled and are permanently charged.
Closed loop solar heating system.
The heated water then flows into the storage tank before it s channeled into the heat exchanger.
A closed loop solar water heating system.