Question

A well located in the desert is 10 m deep to the water level and 1...

A well located in the desert is 10 m deep to the water level and 1 m in diameter. The stagnant air and the water in the well are at 30°C and normal atmospheric pressure. A slight breeze of dry air is blowing across the top of the well. Calculate the rate (kg/s) of diffusion at steady state of water vapor from the surface of water in the well. (Assume the partial pressure of water vapor in the air at the surface of the water is equal to the vapor pressure of water at 30°c.)

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