Abstract
The mathematical model of wood drying based on a detailed transport phenomena considering both heat and moisture transfer have been offered in the article [5]. We apply this model to quickly moving paper sheet. The range of the moisture content correspond to the period of drying and only vapor movement in the web is possible. By averaging we have obtained the desired model as a system of two nonlinear first order ordinary differential equations.
Highlights
Some time ago we began treatment of the mathematical models for wood drying and saturating processes
Our collective elaboration was presented in the 10th conference of ECMI in Goeteborg, Sweden, June 23-28, 1998 and after that the report 1] was published
The temperature variation is a very signi cant factor in wood or paper processing. This notice is devoted to some aspects of the consequent trend of investigations { we take into account temperature gradients for mathematical modelling of paper drying
Summary
Some time ago we began treatment of the mathematical models for wood drying and saturating processes. In the construction in of the mathematical model we neglected temperature changes during the drying and saturating processes. The temperature variation is a very signi cant factor in wood or paper processing. This notice is devoted to some aspects of the consequent trend of investigations { we take into account temperature gradients for mathematical modelling of paper drying. The wet web from the press section is passed over a series of rotating steam{ heated cylinders where water is evaporated and carried away by ventilation air. Relevant details of this process are described following 6]
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