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Yaghoubi, Marjan; Askari, Bijan; Mokhtarian, Mohsen; Tavakolipour, Hamid; Elhami Rad, Amirhosein; Jafarpour, Afshin; Heidarian, Soodabeh. |
Potato cubes were dried by different drying methods. After the end of drying process, the experimental data were first fitted to the four well-known drying models. The results indicated that the logarithmic and page models performed better compared with the other models. Also, in this study neural networks were used in order to possibly predict dried potato moisture ratio (y), based on three input variables of drying time, drying temperature and different methods. The results revealed that, logsig function based on 10 neurons in the first hidden layer could perform as the best goodness configuration for predicting the moisture ratio. The comparison of the obtained results of ANNs and classical modeling indicated that, the neural networks have a higher... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extraction kinetics; Time constant; Extract concentration; Extraction yield; Medicinal herbs. |
Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2590 |
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Gharehbeglou, Pouria; Askari, Bijan; Homayouni Rad, Aziz; Hoseini, Seyed Sajjad; Tavakoili Pour, Hamid; Elhami Rad, Amir Hosein. |
The drying process of turnip and drying rate curves were investigated at different temperatures (55, 70 and 85°C) with air flow rate of 1.5 m/s. Also effective diffusion coefficient and activation energy were calculated by using Arrhenius equation and Fick’s second law for infinite slab. The effective diffusivity varied between 5.471×10-10 and 8.966×10-10 in the range of (55°C to 85°C). The value of activation energy was found to be 16.013 kJ/mol. The mathematical models (Newton, Page, Modified Page, Henderson and Pabis, Logarithmic, Two term, Two term exponential, Wang and Singh, Simplified Fick’s diffusion, Modified Page –II, Verma, Midilli–Kucuk, Hii, Law and Cloke, Approximation of diffusion, Modified Henderson and Pabis) were fitted to the... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Turnip; Hot air convective drying; Modeling; Drying rate; Effective diffusivity; Activation energy. |
Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2864 |
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