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Solar Pv Dump Controller And Two Immersion Heaters
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<blockquote data-quote="ProDave" data-source="post: 324197" data-attributes="member: 6969"><p>the second tank is just a buffer.</p><p></p><p>Sold water goes into the second tank, and the outlet from the second tank feeds the input to the main tank.</p><p></p><p>It was put there specifically for this purpose apparently as a pre heat tank.</p><p></p><p>I can see it might work occasionally, for a short time.</p><p></p><p>But in a prolonged spell of wall to wall sunshine it will reach the point when both tanks are hot. Will he then fit a third?</p><p></p><p>Don't forget, if the main tank is being fed with water already pre heated a bit, then it will take less to heat that to full temperature, so that one will cut out sooner in the day, sending more to the pre heat tank.</p><p></p><p>the only "solution" is to use more hot water.</p><p></p><p>Personally rather than faff about with two tanks, I would have changed the main one for a bigger tank.</p></blockquote><p></p>
[QUOTE="ProDave, post: 324197, member: 6969"] the second tank is just a buffer. Sold water goes into the second tank, and the outlet from the second tank feeds the input to the main tank. It was put there specifically for this purpose apparently as a pre heat tank. I can see it might work occasionally, for a short time. But in a prolonged spell of wall to wall sunshine it will reach the point when both tanks are hot. Will he then fit a third? Don't forget, if the main tank is being fed with water already pre heated a bit, then it will take less to heat that to full temperature, so that one will cut out sooner in the day, sending more to the pre heat tank. the only "solution" is to use more hot water. Personally rather than faff about with two tanks, I would have changed the main one for a bigger tank. [/QUOTE]
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