Performance Analysis and Drying Kinetics of Maize in an AflaSTOP Dryer  

作　　者：Ernest Owusu-Sekyere George Obeng-Akrofi Joseph O. Akowuah Dirk Maier Ernest Owusu-Sekyere;George Obeng-Akrofi;Joseph O. Akowuah;Dirk Maier(College of Engineering, South China Agricultural University, Guangzhou, China;Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, USA;Department of Agricultural and Biosystems Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana)

机构地区：[1]College of Engineering, South China Agricultural University, Guangzhou, China [2]Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, USA [3]Department of Agricultural and Biosystems Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana

出　　处：《Open Journal of Applied Sciences》2021年第3期327-342,共16页应用科学（英文）

摘　　要：The performance of an AflaSTOP dryer which utilises biomass energy for drying maize was investigated. The drying behaviour of maize grains in the dryer was also investigated using ten (10) thin-layer mathematical models. The models were compared based on coefficient of determination (<em>R</em>²) and Root Mean Square Error (<em>RMSE</em>) values between experimental and predicted moisture ratios. At an average drying air temperature of 50<span style="white-space:nowrap;">&#176;</span>C and drying air velocity of 2.5 m/s, maize at average moisture content (MC) of 17.5% (wb) was dried to an average MC of 11.5% (wb) in three (3) hours. The drying and thermal efficiency were calculated as 81.1% and 29.6% respectively. Overall, drying took place in the falling rate period. The Logistics model was best to describe the thin-layer drying kinetics of maize in the dryer with <em>R</em>² value of 0.9902 and <em>RMSE</em> value of 0.04908.The performance of an AflaSTOP dryer which utilises biomass energy for drying maize was investigated. The drying behaviour of maize grains in the dryer was also investigated using ten (10) thin-layer mathematical models. The models were compared based on coefficient of determination (<em>R</em>²) and Root Mean Square Error (<em>RMSE</em>) values between experimental and predicted moisture ratios. At an average drying air temperature of 50<span style="white-space:nowrap;">&#176;</span>C and drying air velocity of 2.5 m/s, maize at average moisture content (MC) of 17.5% (wb) was dried to an average MC of 11.5% (wb) in three (3) hours. The drying and thermal efficiency were calculated as 81.1% and 29.6% respectively. Overall, drying took place in the falling rate period. The Logistics model was best to describe the thin-layer drying kinetics of maize in the dryer with <em>R</em>² value of 0.9902 and <em>RMSE</em> value of 0.04908.

关 键 词：AflaSTOP Dryer Maize Drying Thin Layer Drying Kinetics Drying Efficiency 

分 类 号：S51[农业科学—作物学]