Coil Roof Roofing
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Does the speed of a liquid through a heat exchanger influence the efficiency?
We have a solar water heater with a 300lt tank. To boost the water temperature in Winter we have a wood fire with a heating coil. At the moment the water is circulated naturally by the heated water rising to the tank on the roof and drawing the cold in at the bottom. This is working okay but considering the amount of heat generated by the fire I would have thought it should heat more water.
If I were to pump the water through the system at a faster rate would we get more hot water or does it all just balance out in the end?
It would seem to me that if the system is "sufficent" without a circulation pump, using convection currents to move water, then a pump probabily would help transfer heat with more efficency.
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