Grade mecanizada inclinada de telas Sigma
Default

Input data

Channel width (L)

Channel height (H)

Upstream maximum liquid level of project (C)

Downstream liquid level (Hj)

Maximum flow (Qmax)

Grid dimensions

Specific mass of debris

Obstruction

Output data

Daily retained debris

Maximum velocity in the grid

Liquid height without obstruction before the second screen

Upstream heigth

Total head loss without obstruction

Upstream height with clean grid

Condition without obstruction

Total head loss with obstruction

Liquid height before the grid, with obstruction

Condition with obstruction

Mass of debris retained

Work rotation

Commercial power adopted

Description

Calculates the rotation, power and head loss of a Sigma bar screen, given its specification and the inflow channel geometry. Estimates for the quantity of daily retained debris are also given.

 

Grid dimensions

Round orifice - alternate disposition

#Diameter - D (mm)Distance between orifices - EC (center to center) (mm)Efficiency / Open area
1120,225
21,52,60,3
323,40,31
42,540,35
5350,325
6460,4
757,50,4

Sigma screen

Note

This memorial can be used for preliminary purposes; the definitive calculations must be performed by Sigma.

More information can be found at: https://sigma.ind.br