Polytechnic University of Valencia Congress, 21st International Drying Symposium

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Multivariable modeling of an innovative hybrid solar-gas dryer
A. Zoukit, H. Elferouali, I. Salhi, S. Doubabi, Naji Abdenouri

Last modified: 02-01-2019


The main goal of this paper, is to propose a multivariable control model (MM) issued from CFD study of an innovative hybrid solar-gas dryer to simulate the drying chamber temperature in three modes of operation: Solar mode, Gas mode and hybrid mode. There is an indirect heating of drying air instead of direct heating inside the drying chamber. The air temperature obtained by CFD is still closed to one obtained by multivariable model (MM) with an RMSE under 2.31. the proposed multivariable model leads to a quick output parameters estimation related to each clilmate conditions and so, to an easy control of a hybrid solar dryer.


Keywords: Hybrid dryer; Multivariable model; solar dryer simulation; solar dryer control; Least square methods


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