Drying – Basic Hot Air Dryer Design

We have discussed earlier the importance of drying in a cleaning process.  Despite the several hardware options available, hot air dryers remain the “go to” in industrial cleaning processes today.  Today’s blog will discuss the basic design concept of hot air dryers and how they function. The main components of hot air dryers are a …

Drying – Vacuum Drying

Using a vacuum to assist or effect total drying is not a new concept.  A reduction of air pressure lowers the boiling point of water and other liquids and thereby speeds their rate of evaporation.  Although not practical in many applications for reasons I will discuss below, vacuum drying remains a viable alternative in some specialized applications.  …

Drying – Heat Considerations in Hot Air Drying

Hot air drying applications involve, primarily, the evaporation of water or another liquid such as a solvent from the surface being dried.  Evaporation occurs as heated air circulates over and around the surface being dried as discussed in earlier blogs.  In all cases this liquid evaporation consumes heat which results in cooling of the remaining liquid.  One …