1. Basic principles of purifier? How dam ring, rpm and bowl
size determined? Banerjee
The separation principle of high speed centrifuge depends on the difference in the specific gravity of two different liquids.
Fs = ∏/6x D3 (ρw-ρo) g
Where Fs is the separating force, ρw is density of water, ρo is density of oil and “g” is gravitational force
The g is replaced by the centrifugal force in purifiers
Fs = ∏/6x D3 (ρw-ρo) ω2 r
Therfore, Effective seperation can be achieved by increasing ω which depends on rotation of the purifier and by increasing the density difference by increasing the temperature.
NOMOGRAM to select Gravity disc/Dam ring
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