Hmm, belive me I tried to read all EIGHT pages but failed miserably...
and went tot he last one and guess what? Same thing, willy waving and nothing else.
Have we got rules yet or still battling them out?
About diameter of tubing...
Coolant musn't loose any velocity while in transit between pieces of WC setup. The ideal conditions for such behaviour is laminar flow situation in tubing. One thing to remeber though, flow characteristics move towards turbulent behaviour with increasing vessels diameter and velocity. To repehrase, with set velocity increse in tubing diameter increases Re number. Keeping the same velocity (means lowering pumps output) and decreasing vessels diameter lowers Re number pushing flow characteristics towards welcomed laminar flow
. Look at equations, use imaginary numbers to test behaviour of results to see it plainly
.
Conclusion -> from theoretical point of view there's a sweet spot for pipind diameter for every system (pressure drop after each unit) and in perfect system piping diameter would change after each 'consumer unit' to obtain flow as close to laminar as possible