How do you figure that inducing the higher flow creates more heat? Now I do agree that of course it will make some heat - but if you are trying to convince me that the additional friction (both between water and rad/tubing, and between water/water from turbulence) is creating that heat then I don't think that it will be a measurable amount of extra heat, and we should ignore it. If you are trying to convince me that this extra heat is because we need bigger pumps to create the flow, then it is definatly a possibility - but perhaps then we need to look at optimizing the system in other ways to get more flow out of the smaller pumps we already have.
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