Question: 2.32. Mass-transfer coefficients from acetone evaporation data In a laboratory experiment, air at 300K and 1atm is blown at high speed parallel to the surface

2.32. Mass-transfer coefficients from acetone evaporation data In a laboratory experiment,

2.32. Mass-transfer coefficients from acetone evaporation data In a laboratory experiment, air at 300K and 1atm is blown at high speed parallel to the surface of a rectangular shallow pan that contains liquid acetone (C3H6O), which evaporates partially. The pan is 1m long and 50cm wide. It is connected to a reservoir containing liquid acetone which automatically replaces the acetone evaporated, maintaining a constant liquid level in the pan. During an experimental run, it was observed that 2.0L of acetone evaporated in 5min. Estimate the mass-transfer coefficient. The density of liquid acetone at 300K is 0.79g/cm3; its vapor pressure is 27kPa (Perry and Chilton, 1973). Answer: FG=0.586mol/m2s

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