Abstract
In order to study the effect of corn kernel composition and physical structure on moisture distribution and transfer process and obtain the optimal tempering-drying parameters of corn kernel, a physical model was constructed with four different components as follows: seed coat, horny endosperm, farinaceous endosperm and embryo. The drying model was established based on the assumption of different diffusion coefficients and same thermal conductivity for the four components. The software of COMSOL Multiphysics was used to simulate the heat and mass transfer process inside the corn kernel during the thin-layer drying. The results showed that the least total drying time and the best drying quality were achieved under the multistage circulating drying of 10 min hot air drying and 60 min tempering, and the tempering degree was up to 0.9207.
Funding statement: Funder Name: National Natural Science Foundation of China, Funder Id: 10.13039/501100001809, Grant Number: 31171772
Acknowledgements
At the point of finishing this paper, I would d like to express my sincere thanks to all those who have lent me hands in the course of my writing this paper. First of all, I would like to extend my sincere gratitude to my supervisor, Deyong Yang, for his instructive advice and useful suggestions on my thesis. I also appreciate my senior fellow apprentices who gave me continuous support and encouragement.
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