SIMULATION AND OPTIMIZATION OF CROSS FLOW GRAIN DRYERS

Abstract

In this paper simulation and optimization study on Beidahuang 5HT-15 cross flow grain dryer is presented. The p. d. e. model is employed to establish the simulation program, and the backward difference method and the predictor-corrector integration are used in the thin layer drying process estimation. The optimal analysis is conducted in a 9-dimensional domain and the specific energy consumption is taken as the main target as a weighted sum of heat and mechanical energy according to the factor of cost while the less-important features of performance are put into the target function as penalty factors. The complex polygon method is used in the optimization program. By running the optimization program, a group of optimal policies about the operation of 5HT- 15 dryer have been proposed. Possible improvement and renovation of the cross flow dryers, both in structure and in performance, have also been approached in the simulation and optimization study.