Surely the other way? Keep the coolant at a lower temperature for longer.
hmm. i guess i didn`t think it through.ideal motor temp
In a heat exchanger the best is flow from each entry towards the other entry i believe (crossflow) for highest efficiency (best heat transfer)
The ideal is maintaining a even temp all over the motor right below maximum of what the motor insulation can take.
This means that by going from the cool side to the exhaust side there might be a hot sone on the motor end.
But going inn on the hot side will distribute the heat over the motor.
So less flow over the cool side is a good idea. full cooling effect is not needed there. Optimum cooling distribution
Optimum would be a even distribution of water all over the motor but with different flows.
I guess a tapered sylinder design around the motor would give higher waterflow towards the hotside and take care of that. Another option is more cooling vanes towards the hot sone. This might be a lighter design due to the lesser internal volume needed. Or a combo of both.
Does this make more sense?
Edited by MatsNorway, 15 January 2013 - 16:33.