Yes, it would be a function of the flow rate. I'm assuming various pumps with the same loop, resulting in different flow rates.
No, measuring a temp increase across a restriction isn't anywhere near practical.
There's a formulae in
this article that could come in handy here.
What I'm trying to get to (and for some reason, keep circling around) is that there's heat generated by the pump within the housing, and it's in two forms:
1-the recirculating water within the housing
2-the motor coil heat
It's late... I'll pick this up tmo
