The docs say 90% efficient from 0 to 500 RPM. I wonder if that's driven by marketing wanting to print a high efficiency number, or something else.
I suspect the gap between the plates needs to be kept small to keep forces high (force is something similar to 0.5QV/d), giving high viscous losses that would increase with RPM (proportional?). I suspect that's what eventually limits the speed.
I suspect the gap between the plates needs to be kept small to keep forces high (force is something similar to 0.5QV/d), giving high viscous losses that would increase with RPM (proportional?). I suspect that's what eventually limits the speed.