To simulate heat disinfestation in a fluidized bed system,
in which part of the exhaust air is recycled for energysaving
reasons, the system is divided into a series of
elementary control volumes, as shown in Fig. 6. The basic
principles of the laws of mass and energy conservation,
accounting for convective heat transfer and mass transfer
based on the empirical model fitted from the experimental
data, are employed to each elementary control volume,
leading to a set of governing equations, as follows: