The aim of this work is to analyse different ways for controlling the final
moisture content of a product dried on a drum dryer; and to reduce its
unevenness in order to obtain a high-quality product and to increase dryer
productivity A new way to determine product moisture content by means of
product temperature measurement is presented, which is convenient for a
moving and low thickness film. The product temperature is directly related to
moisture content, because drying on a drum dryer takes place by boiling: this
relation comes from the experimental desorption isobal; or boiling curve of the
product. This measurement allows the detection of wet zones, and the
correction of the moisture profile across the width by means of an additional
inductive heater Copyright 0 1996 Elsevier Science Limited.