Physics
Physics, 23.09.2019 16:20, michelle7511

Awet solid is dried in a tray configuration. in one experiment, the total moisture content is reduced from 36% to 8% (dry basis) over a drying time of five hours. the material has an equilibrium moisture content of 5%. the drying rate versus free moisture curve is depicted below, with the critical free moisture content of 10%. how long will it take to reduce the total moisture content of 40% to 7% (dry basis)?

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Chemistry, 05.07.2019 20:20, kingdesto3481
The initial moisture content and the equilibrium moisture of a granular paste material extruded into cylinders (diameter- 5.25 mm, length-20 mm) is 0.8 k? h2okg dry solid and 0.015 kg h20/kg dry solid respectively. the cylinders are packed on a screen to a depth of 65.8 mm.the true solid density is 1580 kg/m2. the bulk density of the dry solid in the bed is 650 kg/m3 air (wet bulb temperature 48c and humidity 0.06 kg h2o/ kg dry air) passes through the bed with a superficial velocity of o.75 m/s. the total critical moisture content is 0.60 kg h20/kg dry solid calculate (i) the time of drying for the constant-rate period (s), (ii) the time of drying for the falling-rate period (s) and (ii) the total time to dry the solids to 0.3 kg h20/kg dry solid (s).
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Chemistry, 24.08.2019 00:20, joellianamikhai3123
Abatch dryer removes water from a solid at a rate of 30 kg/hr during the constant rate period. critical moisture content is 0.25 kg h2o/kg dry solid. the equilibrium moisture content of the material is 0.035 kg h2o/kg dry solid. the drier is initially charged with 750 kg of total material, which contains 2 00 000 g of moisture. the final product should contain 0.08 kg h2o/kg dry solid. the falling rate period can be represented by a straight line. the total drying area is 5 m^2 . 1. draw a schematic diagram that depicts the process. 2. determine the total drying time to produce the product.
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Engineering, 13.09.2019 23:30, gianni0
Abatch dryer removes water from a solid at a rate of 30 kg/hr during the constant rate period. critical moisture content is 0.25 kg h2o dry solid. the equilibrium moisture content of the material is 0.035 kg h2o dry solid. the drier is initially charged with 750 kg of total material, which contains 2 00 000 g of moisture. the final product should contain 0.08 kg h2o dry solid. the falling rate period can be represented by a straight line. the total drying area is 5 m^2 . 1. draw a schematic diagram that depicts the process. 2. determine the total drying time to produce the product.
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