|
|
|
|
|
| Resende,Osvaldo; Oliveira,Daniel E. C. de; Costa,Lílian M.; Ferreira Júnior,Weder N.. |
| ABSTRACT This study aimed to fit different mathematical models to the experimental data on drying of baru fruits (Dipteryx alata Vogel), determine and assess the effective diffusion coefficient, as well as obtain the activation energy and thermodynamic properties for the drying process under different air temperature conditions. Baru fruits with an initial moisture content of 0.429 ± 0.044 (dry basis, db) were dried in a forced air ventilation oven under four temperature conditions (40, 60, 80, and 100 °C) until reaching a moisture content of 0.065 ± 0.018 (decimal db). These data were fitted to mathematical models frequently used to represent the drying of vegetal products. The Logarithmic model presented the best fit to describe the phenomenon. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mathematical modeling; Liquid diffusivity; Logarithmic. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100103 |
| |
|
|
| Smaniotto,Thaís A. de S.; Resende,Osvaldo; Sousa,Kelly A. de; Oliveira,Daniel E. C. de; Campos,Rafael C.. |
| ABSTRACT The objectives of this study were to fit different mathematical models to experimental data of drying of sunflower grains, determine and evaluate the effective diffusion coefficient and obtain the activation energy for the process during the drying under various conditions of air. The sunflower grains were collected with an initial moisture content of 0.5267 dry basis (d.b.) and dried in an oven with forced air ventilation under five temperature conditions: 35, 50, 65, 80 and 95 °C, until reaching the moisture content of 0.0934 ± 0.0061 (d.b.). Among the analyzed models, Wang and Singh showed the best fit to describe the drying phenomenon. The effective diffusion coefficient of sunflower grains increased with the increment in air temperature and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mathematical modeling; Heliantus annus; Liquid diffusivity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300203 |
| |
|
|
|
