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    Solar Hot Water

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    So I built a copper heat exchanger and mounted 2 flat plate collectors on the roof, plumed it all in and insulated.
    The Solar panel in the middle runs the Glycol pump, when the sun shines the pump runs, when a cloud comes over the pump slows down and in the evening the pump stops completely.

    When the glycol temp reaches 5 degrees above the hot water tank the flow valve opens and the system begins to heat the DHW .

    Works fantastic !
    So far in testing the system will heat 350 liters of water to +60c even in winter with an outside temp of - 30c 

    Build your own soar collectors

    YouTube Video

    YouTube Video

    DIY heat exchanger





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