Question: problem04 A batch of wet solid whose drying-rate curve is represented by Fig. 10 be dried from a free moisture content of X1=0.38kgH2O/kg dry solis

problem04

problem04 A batch of wet solid whose drying-rate curve is represented by

Fig. 10 be dried from a free moisture content of X1=0.38kgH2O/kg dry

solis to X2=0.04kgH2O/kg dry solid. The weight of the dry solid is

A batch of wet solid whose drying-rate curve is represented by Fig. 10 be dried from a free moisture content of X1=0.38kgH2O/kg dry solis to X2=0.04kgH2O/kg dry solid. The weight of the dry solid is Ls=399kg dry solid and A=18.58m2 of top drying surface. Calculate the time for drying. Note that Ls/A=399/18.58=21.5kg/m2. but as an approximate assume a straight line for the rate R versus X through the origin from point Xc to X=0 for the falling rate period

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