Batch Drying Problem With Solutions

Batch Drying Problems

Solution to Problem 1

Solution to Problem 2

Batch Drying Problems

Solution to Problem 3

Solution to Problem 3

Batch Drying Example

3. (From MSH) A slab with a wet weight of 5 kg originally contains 50% moisture. The slab is 600 by 900 by 75 mm thick. The equilibrium moisture is 5%. The drying data is given below:

Wet slab wt, kg Rate, kg/m2-hr

9.1 7.2 5.3 4.2 3.3 2.9 2.7 4.9 4.9 4.4 3.9 3.4 2.0 1.0

Drying is from one face. How long will it take to dry the slab to 15% moisture?

©UST Ch.E. Department

Solution to Example 3

Solution to Problem 4

Trial and Error: Assume X2 until FRP Area is 0.367 X2 is about 0.268 (Verify)

Trial and Error: Assume X2 until FRP Area is 0.367 X2 is about 0.268 (Verify)