期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：11
页码：10314
DOI：10.15680/IJIRSET.2015.0411001
出版社：S&S Publications
摘要：Forced convection solar dryers, utilizing solar driven fans, may be used to improve ventilation, and toachieve an optimum drying air velocity in grain dryers. However, without use of the appropriate grain layer thickness,the heated air may not be able to successfully penetrate the grain to facilitate drying. Also, too many grain layers placedin the drying cabinet may prevent air from flowing up the entire drying cabinet. The appropriate grain layer thicknessand maximum number of drying trays are therefore factors that are crucial in sizing a solar drying cabinet. However,their determination, without use of simulation, would require troublesome development stages, involving trial and errorand continued testing, a process which would be expensive and time consuming. This study applied simulation usingComsol Multiphysics Software for their determination, hence enabling the sizing of a dryer cabinet to facilitatesufficient and effective aeration of the grain for optimization of the drying process. It was found that the maximumgrain layer thickness that can allow penetration by air is 100 mm. It was also found that the maximum number of grainlayers that should be dried for effective aeration was 4.
关键词：Optimisation; Solar Drying; Grain Layer Thickness; Comsol Multiphysics Software; Deep bed drying.
