Concurrent Flow Dryers
In a concurrent flow dryer the both the grain and air are moving in the same direction. This type of dryer has the advantage of using very high drying air temperatures without affecting grain quality and do not suffer the variation in grain moisture contents because all kernels are exposed to the same temperatures. They can have multiple heating zones but the secondary air distribution will be both concurrent and counter flow. Energy efficiency of this type dryer is about 40% better than a cross-flow type dryer without heat recovery. There are few manufacturers of this type dryer; mixed flow dryers have similar advantages.