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This paper deal with the drying of wheat using desiccant grain dryer for the purpose of energy optimization. Input energy is calculated for different level of air drying parameters including temperatu...re (T= 40, 45, 50, 55, 60) ºC and velocity (0.5, 0.7, 0.9 and 1.1) ms^-1. To make the system more economical and energy efficient optimized conditions for the operational variables are investigated. It is observed that increase in drying air temperature and velocity; increases the drying rate and shorter the drying duration. However, increase in drying air temperature and velocity; increases the specific energy consumption. In case of DDS; SEC range from 3.09to 5.92 MJ/kg and in case of CDS its range from 4.2 to 6.20 MJ/kg. The results of energy analysis showed that the energy efficiency improved at lower temperature and lower levels of velocity but it increases the drying cycle time. Furthermore, optimum value of air velocity helps in completion of drying cycle within allowed time for safe storage at the cost of minimum energy consumption.show more
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