A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))_____________?

Related Mcqs:

Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 × 10-3 kg mole/m2.s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m2 .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is _________________________?

A. 5.6 × 10-4 B. 8.5 × 10-4 C. 5.6 × 10-3 D. 8.5 × 10-3...

Pick out the wrong statement ?

A. Absorption factor is constant, when the equilibrium and operating lines are straight B. In case of a stripper, the equilibrium curve is always below the operating line C. In case of an absorber, the operating line is always above the equilibrium curve D. In the absorption of low solubility gases, the liquid film is … Pick out the wrong statement ?Read More...

Pick out the wrong statement ?

A. In solvent extraction, the distribution co-efficient should be as large as possible for solvent economy B. With increase in pressure, the solubility of gases in solvent increases at a fixed temperature C. Decrease in Murphree plate efficiency is an indication of entrainment in distillation column D. The capacity of a distillation column is maximum … Pick out the wrong statement ?Read More...

Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant______________________?

A. Humidity B. Velocity C. Temperature D. All A., B. & C....

In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be_____________________?

A. At ground level B. 2 metres above the ground C. 5 metres above ground D. 10 metres above ground...