Determination of the porosity of a filtering cloth

Determination of the porosity of a filtering cloth

         

The porosity of any filtering cloth can be determined by microscopic measurements together with the following equation:

                           m2

Porosity (b) =      ---------

                       (d+m2)

 where, ‘m’ is the mesh width and ‘d’ diameter of the strand in the mesh work. If porosity of a filtering cloth is determined, then it is possible to calculate the opening area ratio ‘R’ by the equation.

                      ab

            R= ----

                    A

where, ‘a’ is the total area of filtering portion in sifting area and ‘A’ the mouth area of the net.

Last modified: Tuesday, 20 March 2012, 4:42 AM