constitutes the simplest and cheapest way to make a dryer. It comprises
a fan, a heat exchanger for water or vapor and a motorized dumper
for the air change. The system is completed with wall fans, humidifiers
and a good electronic control-unit .
In the building of the dryer the problems linked to the corrosion
by the tannin and other acids contained in the wood are taken into
The dryers' structure and pipings are made of aluminum and stainless
steel and the fans are coated with a special protective vamish.