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variable pump speed in accordance with pool heating panels

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  • variable pump speed in accordance with pool heating panels

    Hello all,

    I have reached the next step of integrating my pool to Loxone.
    I measure the following temperatures via 1-wire:

    Flow temperature
    Return temperature
    Temperature just behind the heating panels (return)

    If the temperature of the panels is 3 degrees higher than the supply temperature, the 3-way valve will switch over and the water will circulate through the panels.
    When this difference temperature is lower than 1 degree, the 3-way valve switches back.

    What I now want to implement is that I adjust the pump speed ( I control this trough 0-10V signal) to the temperature.
    So: if the temperature of the panels is 2 degrees higher than the return temperature, the pump will have to go 1% faster.
    When the temperature drops the speed is 1% lower.

    So I want to control my pump variably in order to always have the best heat output (light sunny weather vs full sun)

    Anyone have any idea if there is a module that can do this part already, or do I have to build a whole logic myself?
    (is a PID control perhaps something for this?)

    Thank you very much for your input
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