In a laboratory test run, the rate of drying was found to be 0.5 x 10
-
3 kg/m2
.s, when the moisture content reduced from 0.4 to 0.1 on dry basis.
The critical moisture content of the material is 0.08 on a dry basis. A traydryer is used to dry 100 kg (dry basis) of the same material under identical
conditions. The surface area of the material is 0.04 m2
/kg of dry solid. The
time required (in seconds) to reduce the moisture content of the solids from
0.3 to 0.2 (dry basis) is
(A) 2000
(B) 4000
(C) 5000
(D) 6000
-
3 kg/m2
.s, when the moisture content reduced from 0.4 to 0.1 on dry basis.
The critical moisture content of the material is 0.08 on a dry basis. A traydryer is used to dry 100 kg (dry basis) of the same material under identical
conditions. The surface area of the material is 0.04 m2
/kg of dry solid. The
time required (in seconds) to reduce the moisture content of the solids from
0.3 to 0.2 (dry basis) is
(A) 2000
(B) 4000
(C) 5000
(D) 6000