Convective drying of regular mint leaves: analysis based on fitting empirical correlations, response surface methodology and neural networks



Document title: Convective drying of regular mint leaves: analysis based on fitting empirical correlations, response surface methodology and neural networks
Journal: Acta scientiarum. Technology
Database: PERIÓDICA
System number: 000377205
ISSN: 1806-2563
Authors: 1
1
1
1
Institutions: 1Universidade Federal de Sao Carlos, Departamento de Engenharia Quimica, Sao Carlos, Sao Paulo. Brasil
Year:
Season: Abr-Jun
Volumen: 36
Number: 2
Pages: 270-278
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental, aplicado
English abstract In the present work, an analysis of drying of peppermint (Menta x villosa H.) leaves has been made using empirical correlations, response surface models and a neural network model. The main goal was to apply different modeling approaches to predict moisture content and drying rates in the drying of leaves, and obtaining an overview on the subject. Experiments were carried out in a convective horizontal flow dryer in which samples were placed parallel to the air stream under operating conditions of air temperatures from 36 to 64°C, air velocities from 1.0 to 2.0 m s-1 and sample loads from 18 to 42 g, corresponding to sample heights of 1.4, 1.7 and 3.5 cm respectively. A complete 33 used. Results have shown that the three methodologies employed in this work were complementary in the sense that they simultaneously provided a better understanding of leaves drying
Portuguese abstract No presente trabalho foi analisada a secagem de folhas de hortelã (Menta x villosa H.) por correlações empíricas, superfícies de resposta e de rede neural. Pretendeu-se com esta análise testar diferentes alternativas de modelos para prever o conteúdo de umidade e as taxas de secagem das folhas, obtendo-se por estes métodos uma visão mais completa da secagem das folhas. Os dados experimentais foram obtidos em um secador convectivo com escoamento horizontal, paralelo à amostra, variando-se a temperatura do ar no intervalo de 36 a 64°C, a velocidade do ar entre 1,0 a 2,0 m s-1, com massa das amostras de 18 a 42 g, correspondendo a alturas de 1,3, 1,7 e 3,5 cm, respectivamente. Utilizou-se um planejamento fatorial completo 33. Os resultados indicaram que a análise através dos três métodos foram complementares e para um material como as folhas é conveniente utilizá-los simultaneamente
Disciplines: Agrociencias
Keyword: Fitotecnia,
Ingeniería agrícola,
Menta,
Hojas,
Secado convectivo,
Contenido de humedad,
Parámetros cinéticos
Keyword: Agricultural sciences,
Crop husbandry,
Agricultural engineering,
Mint,
Leaves,
Convective drying,
Moisture content,
Kinetic parameters
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