Modeling and Control of a Fluidised Bed Dryer

نویسندگان

  • J. A Villegas
  • S. R. Duncan
  • H. G. Wang
  • W. Q. Yang
  • R. S. Raghavan
چکیده

In this paper, the modelling and control of the moisture content of the particles in a batch Fluidised bed dryer are studied. First, a lumped mechanistic model is developed to describe the heat and mass transfer between solid, gas and bubble phases and experimental validation shows that the model can be used to predict the particle moisture content and temperature profiles during the drying process in the bed dryer. Feedback control of material moisture content in a bed dryer is studied where the moisture content is obtained by measuring the humidity and temperature of the outlet gas. A controller is designed to achieve a desired drying rate for wet materials.

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تاریخ انتشار 2008