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Problem: An experiment is being carried out in a laboratory on the feasibility of industrial drying of a certain food product. From this experimentation, drying
Problem: An experiment is being carried out in a laboratory on the feasibility of industrial drying of a certain food product. From this experimentation, drying data were obtained with a tray dryer and air flow over the exposed upper surface see data in the annex table The drying area is and the mass of the dry solid is The humidity of the gas used for drying is of dry air. With the above information:
A Make a graph of mass of wet solid in versus time in h
b Make a graph of free moisture X in water dry solid versus time in
c Measuring the slopes, calculate the drying rates in water and plot versus
d Calculate Xc in water dry solid and the drying rate in water for the constant velocity region.
e From your graphs above, obtain an algebraic relationship between the drying rate in water and the free moisture in water dry solid in the decreasing rate section. f If said solid must be dried from a humidity of to on a wet basis mass of watertotal mass under the same drying conditions of the experiment, determine the total drying time.
Drying Laboratory Data
tableWet solid mass
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