Question

an oak pole having an initial uniform moisture content of 45% is placed in a drying kiln where its surface moisture is maintained at 15 wt%. under the specified drying condition, the drying was controlled by the internal diffusion of liquid water to the surface. if the maximum moisture content of the pole is set at 25 wt%, how long must the 10-cm-diameter by 45-cm-length pole be dried? Neglecting drying from the cylinder ends.

Answer 1