myv65, I've enjoyed your post very much and it is very well thought out. I think perhaps your oversimplified description leaves some doubt.
Quote, "It should be completely obvious that a radiator will deliver its "best" fluid outlet temperature if the fluid stays in for a very, very long time. Given enough time, the fluid will eventually reach the ambient air temperature, for all practical purposes. On the opposite extreme, very high fluid velocity may leave insufficient time for the heat to escape. This should also be obvious. Imagine a radiator with a fluid flow path one inch long. No way you could get the water to cool off because you'd have insufficient time and area to get the job done" end quote
If the heat delivered to the rad is in very small quantities then the time needed to dissipate is also small in the rad. The amount of heat absorbed per volume of water before it reaches the rad is smaller in high flow but repeated many times over compared to low flow in the same time frame. Is my understanding in this flawed?
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