Experimental data for the surface drying of a 3.18cm-thick 6.6cm2 cross-sectional area slab of a thick paste of CaCO3 (whiting) from both sides by air at Td=39.8C and Tw=23.5C and a cross-circulation velocity of 1m/s exhibit the complex type of drying-rate curve shown in Figure 1 , with the following constants: Constant-rate period: X0=10.8%;Xc1=8.3%;andRc1=0.053gH2O/hcm2 First falling-rate period: Xc2=3.7%andRc2=0.038gH2O/hcm2 Second falling-rate period to X=2.2% : R=29.03x20.048x Determine the time to dry a slab of the same dimensions at the same drying conditions, but from X0=0.14 to X=0.01, ignoring the preheat period. Assume an initial weight of 46.4g. Figure 1: Drying rate curve