What was the problem again that you’re trying to solve by using the EWP?

If you are trying to save a very small amount of power at the expense of flow rate, then let’s be looking at a smaller mechanically driven pump.  Then you at least aren’t spending 25% of the total energy needed converting mechanical energy to electrical back to mechanical.

But why take a significant cut in flow rate to save 1 hp?  High flow rate is good.  It gives you better heat rejection system design, lower dT across the engine, better internal circulation for more uniform temps.  And why risk a 50-70 degree dT from the hot side to cold side of the engine.  That’s not a good thing.  Not to mention the risk of internal hot spots from low flow; in places like around the spark plugs.  Have you seen the micro-cracks that can occur in the housings from over temp there?  Lower flow will work, but is it a good thing?  And I suppose there may be some reason, like configuration, for using a EWP, so get the big one and design to provide it the current it needs.

And it is further confusing to me that with the lower flow rate with water; we are now talking about using a much higher viscosity Evans coolant with an EWP?

Al (it must be past my bedtime; I’m beginning to sound emotional)