August 2018
In a tunnel drying process, dry and hot air is pushed at one end of the tunnel, is expulsed at the tunnel other end to be reheated and dried, and then is reintroduced in the tunnel to produce a closed circuit system. In such a system, the product to be dried is feed in the tunnel from one of its end as the production proceed and move along the tunnel as new product is added. In that process, several phases occurs during the product drying.

You can read continue reading this article on the phases of dehydration here on the Commercial Dehydration Systems Inc. website.