Question: 2.10 10b. Mass transfer from a flat plate A thin plate of solid salt, NaCl, measuring 15 by 15cm, is to be dragged through seawater

2.10 10b. Mass transfer from a flat plate A thin plate

of solid salt, NaCl, measuring 15 by 15cm, is to be dragged

2.10 10b. Mass transfer from a flat plate A thin plate of solid salt, NaCl, measuring 15 by 15cm, is to be dragged through seawater at a velocity of 0.6m/s. The 291K seawater has a salt concentration of 0.0309g/cm3 and a density of 1.022g/cm3. Estimate the rate at which the salt goes into solution if the edge effects can be ignored. Assume the kinematic vis- cosity at the average liquid film conditions is 1.02106m2/s, and the diffusivity 147 is 1.25109m2/s. The solubility of NaCl in water at 291K is 0.35g/cm3, and the density of the saturated solution is 1.22g/cm3 (Perry and Chilton, 1973). Answer: 0.86kg/h

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