For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Related MCQs

• Experimental determination of __________ is done by wetted wall column method.
• Wetted wall tower experiment determines the
• The wetted wall tower is used to determine
• A packed tower compared to a plate tower for a particular mass transfer operation
• 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
• For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG: mass transfer co-efficient, moles/m2, a: interfacial area per unit volume of tower)
• 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))
• A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.
• Pressure drop through plate tower as compared to that through packed tower, for the same duty will be
• At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.