Criteria for Determining if Mass loading Saltation Occurs

We compute the tangential velocity of the gas at the iimer core radius. Res, by following the calculation procedure leading up to Eq. (6.2.1) and by using the same equation reported therein for the frictional area term,j4fi. However, for the computation of the total friction factor, /, we do not use Eq. (6.1.11) but the simpler, approximate expression geared to hquids  

The all-important cut size or cut-point diameter of the irmer vortex may now be computed directly from Eq. (6.2.3) or, if necessary, Eq. (6.2.6) where the particle density, pp, now refers to the density of the liquid phase. 

In this section we will compute the grade-efficiency curve and overall separation efficiency at low inlet loadings (co Col)—the classification-only case. 

The grade-efficiency curve one uses to quantify separation efficiency as a function of particle (drop) size should be based on experimental data or plant measurements taken on a cyclone of similar design and operation. However, lacking such information, we suggest, as before, using Eq. (6.3.2) with a slope , 

Overall collection efficiency is again computed from Eq. (6.3.3) by summing up the efficiencies of the individual size fractions, weighted by their mass fraction in the incoming feed. 

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Criteria for Determining if Mass loading ( Saltation ) Occurs 303... 

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