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Modelling of a tunnel dryer with a bond graph approach

In this research work, a bond graph model of a tunnel dryer is performed. The tunnel dryer is sustained by a centrifugal blower. A set of heating resistances are placed inside the tunnel dryer. A detailed model of the centrifugal blower is built. Special importance is attributed to the modelling of the convection between heating resistances and internal air. The resulting model is an energetic lumped approach to simulate the temperature at the output of the tunnel dryer. Data temperature acquired from an experimental tunnel dryer are confronted to the simulated one to validate the model. The simulated results match correctly the measured one.