Corresponding to Prandtl number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Related MCQs

• Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.
• H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 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
• For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is
• 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))
• In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.
• __________ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.
• Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of
• Mass transfer co-efficient 'K' according to penetration theory varies with mass diffusivity as
• Prandtl number for water at 20°C is about