Advantages of Induced Draft
- Better distribution of air across the bundle.
- Less possibility of the hot effluent air recirculating around to the intake of the sections.
- The hot air is discharged upward at approximately 2.5 times the velocity
of intake, or about 1500 ft/min.
- Better process control and stability because the plenum covers 60% of the bundle face area, reducing the effects of sun, rain, and hail.
Increased capacity in the event of fan failure, since the natural draft stack effect is much greater with induced draft