Hi, I am modeling water evaporation in a closed container which is filled with water and air. I need the mass transfer rate equation which is vapor pressure and temperature dependent and reaches equilibrium when air is saturated.
Your rate depends on the heat energy flow into the container, the geometry of the container, and the mass ratio of water and air. Without this information no sensible answer can be given.
Cheers, Petra
=EXP(0.0344*T F°)*0.006*(W%*0.01/0.18)
Where: T F° is temperature in degree F & W% is water percent of the mixture.
Hi Petra,
This is a cylindrical container with bottom wall at 380 K. Mass fraction of water at the bottom half is one and air at the top is one initially and vapor fraction is zero. Cylinder height 18 ft, dia 6 ft.
Hi Roushdy,
Thank you for the answer, can you please tell me which model is this equation?
http://www.sciencedirect.com/science/article/pii/S0001868612000036#
and the references therin will help you to solve your problem
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