The film penetration model of mass transfer was enunciated by

Related MCQs

• Penetration model (theory) for mass transfer was enunciated by
• Surface renewal model of mass transfer was enunciated by
• Mass transfer co-efficient 'K' according to penetration theory varies with mass diffusivity as
• Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time)
• Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as
• For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is
• JD factor for mass transfer is a function of Reynolds number. Mass transfer by molecular diffusion from a single drop to surrounding still air is given by
• The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same system is.
• Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as
• 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))