Abstract
Drying is a very important phase of papermaking. Improving its economic operation is then of great interest. Recent process analysis techniques by modelling, identification and simulation offer new perspectives for such studies.This paper describes a mathematical model based on a theoretical analysis of the physical phenomena that occur in multicylinder paper machine drying sections. The main design and working parameters of these processes are taken into account and computer integration of the equations leads to an overall model of the sheet drying process which is easily workable. This model is the basis of a parameter estimation method which has been developed to evaluate the heat and mass transfer coefficient values in industrial equipment. Results from a pilot paper machine are discussed and the influence of some working parameters on the transfer coefficient values are shown.
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