50 kg of granular solids containing 30% moisture is to be dried in a tray drier...

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50 kg of granular solids containing 30% moisture is to be dried in a tray drier to 10 % moisture by passing a current of air at 350 K tangentially across its surface at a velocity of 2 m/s. If the constant rate of drying under these conditions is 0.8 g/m² .s and the critical moisture content is 9 %, calculate approximately the drying time. Assume the drying surface to be 0.03 m²/kg dry weight. (12) (Oct '97) 50 kg of granular solids containing 30% moisture is to be dried in a tray drier to 10 % moisture by passing a current of air at 350 K tangentially across its surface at a velocity of 2 m/s. If the constant rate of drying under these conditions is 0.8 g/m² .s and the critical moisture content is 9 %, calculate approximately the drying time. Assume the drying surface to be 0.03 m²/kg dry weight. (12) (Oct '97)

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To calculate the drying time we can use the constant rate period equation The equation is t Mf Mi R ... View the full answer