Simulation and optimization of cross flow grain dryers

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 predicto r-corrector integration are used in the thin layer drying process estimatio n. The optimal analysis is conducted in a 9-dimensional domain and the spec ific energy consumption is taken as the main target as a weighted sum of he at and mechanical energy according to the factor of cost while the less-imp ortant 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 op eration of 5HF - I5 dryer have been proposed. Possible improvement and reno vation of the cross flow dryers, both in structure and in performance, have also been approached in the simulation and optimization study.