Given the flow to be filtered $Q$, the number of filters $n$, the superficial area $(A = a \cdot b)$ of each filter and the washing velocity $U_a$, calculates the minimum reccomended areas for inlets and outlets to the filters.
Filter
Observation
The washing velocity must be between 0.60 and 0.95 m/min.
References
AZEVEDO NETTO, J. M. DE. Manual de hidráulica. 9. Ed. São Paulo, Blucher, 2015.