Hi there, nice work, Cathar!

I've been recently conducting some simulations regarding tubing ID, connections, bends, etc. Though I am not into fluid dynamics. I am using the PipeFlow Expert Software. There are apps for unit conversion and pipe estimation (ID, flow, head, max length) - pipeflow wizard.
I posted it here a few hours ago. Since then I've been reading this thread (dunno how I missed it till now ).
I only provide some results (theoretical) - I will not argue with you, Sir! It only shows flow rate vs. tubing ID. I cannot comment on heat dissipation, absorption, C/W - only flow rates. It's still WIP.

Simulation run with no connectors, barbs and so.


And with different pumps @ 0.95m tubing length:

And some calculations for the tubing only (no blocks, nothing):


Also can would you share what kind of software/simulator are you using for your estimations/calculations/plotting.

Thank you, Sir, for your labor.