Quote:
Originally posted by fhorst
Thanks BB2K for the fast reply.
I'm reading some other posts also, and there is a lot to discuss!
I'm lost with "2-given an open impeller, cap it with a doughnut shaped plate." = flat plate with hole in it? or realy capsulate it..?
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Yeah, a flat plate with a hole in it.
Yes, you have to have the clearance for it.
Otherwise, I'd recomend getting that free book from Alfa Laval, which explains a lot different pumps (sorry, no links).
In short, a lot of the pumps are designed for peak efficiency (even though mag drives are still overall inefficient) at a specific flow and pressure range, often somewhere in the middle between min and max.
If you want to experiment with this stuff, I'd recomend picking a pump, and a few extra impellers and housings, and try different variations. If you really want to get into it, then try different motors. The trick then becomes matching the mag drive system to the pump specs you're trying to get to.
Otherwise, stick to the small mods I mentionned above, but don't expect any miracles: sometimes all your best tinkering still won't improve anything, and if it does, it's pretty marginal.
A fun exercise...
