Question: A filter cake is to be dried in a tray dryer, by cross-circulation over the top surface. The trays are 2.5cm high with a surface

A filter cake is to be dried in a tray dryer, by cross-circulation over the top surface. The trays are 2.5cm high with a surface area of 1.5 m and are completely filled with 73 kg of product with dry-basis moisture content of 30%. The heating medium is air at 1atm and 170F with y = 0.1. the average velocity of the air is 4 m/s. Estimate the time in hours required to reach a dry basis moisture content of 10%, assuming that the drying occurs in the constant rate period.

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