I can start seeing it... kinda like a light at the end of the tunnel.
From my previous statements, I said that most of the energy is used to maintain the coolant flow. That's obviously incorrect. Since the coolant flow is steady, the energy still has to go somewhere, so it goes against what makes the water slow down, i.e. the restrictions, ergo friction.
I also said that the energy appears in the form of pressure, but again, once the tubing has expanded (for example), the energy still has to go somewhere. I just don't know where.
So I can see that there is friction, between water against water, and water against all inner surfaces.
What I don't see is how the pressure against the inner surfaces is accounted for.
(continuing ramblings)
The pressure is trying to burst through everything (tube, waterblock), but it's resisted by the "solid" state of the materials (rubber, copper). So how do these materials react when subjected to pressure? Do they emit heat, like when you compress vapor to make water?
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