Wilson spiral

Pressure drop across Wilson spirals (3 mm) with an increasing flow of water, as a function of the gas velocity (air)... 

The effect of an increasing flow of liquid with 3 inm Wilson spirals is shown in Fig. 105. A very favourable pressure drop relationship is found with wire gauze e.g. Dixon) rings, as can be seen from Fig. 106 and 107. The figures plotted are average values obtained with a number of different test mixtures. 

Figure 4.9 Derivation of the mass transfer coefficient by Wilson s method. Toluene/water enrichments are plotted as a function of feed solution superficial velocity in pervaporation experiments. Enrichments were measured at different feed solution superficial velocities with spiral-wound membrane modules [15]...

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