Conceptual Reference Database for Building Envelope Research |
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| Essay:MT: Fick's lawFick's diffusion in porous materials occurs when the moisture contents of the material is below free saturation of the material. It is the water vapor diffusion in air with the resistance offerred by the porous material. Water mocules on the wall of the pores are only seval mocule thick.
Fick's law is usually employed to model such diffusion with the vapor pressure as the driving force.
WVT - water vaport transport |