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| Amiri Chayjan, Reza; Fealekari, Mosayeb. |
| Abstract: Optimization of convective drying process of Persian shallot was investigated using dependent variables of effective moisture diffusivity (Deff), specific energy consumption (SEC), shrinkage and color changes. The central composite design (CCD) was selected for design and optimization of the process. The second-order polynomial models with transformed responses were developed from experimental data to generate three dimensional response surfaces and contour plots. Experiments were performed at air temperatures of 40°C, 55°C and 70°C, air velocities of 0.5, 1.5 and 2.5 m/s and slice thicknesses of 2, 4, and 6 mm in triplicate. Based on response surface and desirability functions, the optimum conditions for Persian shallot drying were: air... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Color; Diffusivity; Energy; Central composite design; Shrinkage. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2807 |
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| Amiri Chayjan, Reza; Kaveh, Mohammad; Khayati, Sasan. |
| The effect of air temperature, air velocity and infrared (IR) radiation on the drying kinetics of sour cherry was investigated using a laboratory infrared dryer. Experiments were conducted at air temperatures of 35, 50 and 65°C, air velocities of 0.5, 1.1 and 1.7 m/s and IR radiations of 500, 1,000 and 1,500 W. Five empirical drying models for describing time dependence of the moisture ratio change were fitted to experimental data. Artificial neural network (ANN) method was used to predict the effective moisture diffusivity and specific energy consumption of the samples. Among the applied models, Midilli et al. model was the best to predict the thin layer drying behavior of sour cherry. Effective moisture diffusivity of sour cherry varied between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sour cherry; Drying; Effective moisture diffusivity; Activation energy; Artificial neural network. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2552 |
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