5. A cylindrical beaker containing 100 ml water is put in a room to humidify the...

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5. A cylindrical beaker containing 100 ml water is put in a room to humidify the initially dry still air at room temperature. The mass transfer coefficient of water at the water/air interface is 0.034 cm/s. The area of the interface is 0.008 m2 and the distance between the Interface and the top of the beaker is 30 cm. a) (10 pts) Calculate the mass transfer rate of water if the concentration of water at the interface is 1.3*106 moles/cm and the concentration away from the surface is zero at steady state. b) (10 pts) Calculate the time to transfer all water from the beaker to the air in the room. MWwater 18 g/mole, density=1g/ml 5. A cylindrical beaker containing 100 ml water is put in a room to humidify the initially dry still air at room temperature. The mass transfer coefficient of water at the water/air interface is 0.034 cm/s. The area of the interface is 0.008 m2 and the distance between the Interface and the top of the beaker is 30 cm. a) (10 pts) Calculate the mass transfer rate of water if the concentration of water at the interface is 1.3*106 moles/cm and the concentration away from the surface is zero at steady state. b) (10 pts) Calculate the time to transfer all water from the beaker to the air in the room. MWwater 18 g/mole, density=1g/ml

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The mass transfer rate depends on the driving force for mass transfer and the area ... View the full answer