I'm confused, Radiator Flow Rate, More not always better?

[Martinm210]

Thanks guys, awesome discussion, I've learned alot.

This is what I was seeing with my error in using water out only. It simply doesn't work right because it's affected by both flow rate and heat load. This also explains why I had a hard time with multiple heat loads as well. Using water out also tend to give a higher heat dissipated number than is probably correct.



I'm switching my testing over to measuring both inlet and outlet water temperatures, but I still plan to measure heat using deltaT because my probes aren't that accurate. Anyhow with this first test, I wasn't able to measure any downward trends once I figured out my error, only a very very small upward gain, but pretty small at only 2% difference between .5GPM and 3.4GPM.