Wilke and Hougan (1945) reported the mass transfer in beds of granular solids. Air was blown through a bed of porous celite pellets wetted with water, and by evaporating this water under adiabatic conditions, they reported gas-film coefficients for packed beds. In one run, the following data were reported:

With the assumption that the properties of the gas mixture are the same as those of air, calculate the gas-film mass-transfer coefficient using equation (2-90) and compare the result with the value reported by Wilke and Hougan.

Data From Equation 2-90:-

Transcribed Image Text:

Effective particle diameter Gas stream mass velocity Temperature at the surface Pressure kG 5.71 mm 0.816 kg/m.s 311 K 97.7 kPa 4.415 x 103 kmol/m.s.atm