Effect of Sweep and ID Variation

Variability in the sweep flow around individual fibres has little effect on module performance. Only slight decreases in dry gas recovery and flow rate occur as the variability in sweep flow increases. The dry gas flow rate drops by less than 10% over the range of dew points considered as the variability in sweep flow rate increases to 20%. The dry gas recovery changes by less than 1%. 

The effect of sweep variability in air dehydration is comparable to that observed previously for fibre variability in nitrogen production from air [30,31]. Significant changes in module performance are found only for inner diameter variability. 

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