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Originally Posted by JamesAvery22
With that little section that isnt removed in the first pic it looks like the rad is going to get water that it just passed. Will the rad just cool that water down by another 0.01c or something?
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I looks like his idea is that half the water coming out of the rad goes back into the rad, a variation on having a separate loop with higher flow for the rad. The thinking seems to be that twice as much flow through the rad as the loop increases the effectiveness of the rad.
Due to delta T it hits diminishing returns quickly. The upper limit of improvement as if the ratio of flows (say 1.5 to 1 through the rad) were sent through that many identical radiators in series. Figure in the added pump heat and complicating the loop, and it starts looking like a very questionable improvement. That being said, the only real test is measurement. I'd guess that the only real way it would show improvement is if the rad was insufficient to begin with.