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stmbtwle

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Reply with quote  #11 
My collector is controlled by an Arduino and a couple of DS18B20 "one-wire" temperature sensors.  It turned the pump and fan on as required according to the temperature.  The 2'x4' ARETHA collector had no problem with stagnation temperatures, but as mentioned I ran into the corrosion issue later.  The next one will have a heat dump of some sort also controlled by the Arduino.  

My new installation is going to have an adjustable mount, so I can change the tilt from optimum in the winter to near-vertical in the summer.   

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Willie, Tampa Bay

gbwillson

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Reply with quote  #12 
Willie-

Is the adjustable mount going to be a hinge on the frame or the collector itself? And how will you hold the desired angle?

Greg in MN


stmbtwle

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Reply with quote  #13 
Plan for now is a couple vertical boards with the collector mounted between them by a single bolt on each end. Loosen the bolt, tilt to desired angle, and retighten. This is for my small collector. A larger collector might mount to a tilting frame. I'll try to put together a couple diagrams for you. It might be feasable to use a linear actuator to tilt the collector, controlled by an arduino. mount 1.jpg
mount 2.jpg   

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Solar is like the wind. It may be free, but putting it to work isn't!
Willie, Tampa Bay
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