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  • moisture source for building envelope



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    		Essay:

    Moisture from indoor

    The transfer of indoor moisture through the building envelope is a process that involves vapor diffusion, air movement, capillary flow, and moisture storage (Fazio et al., 1997). The two main modes for moisture accumulation in building envelope under normal operating conditions are by exfiltration and diffusion.

    Moisture accumulation and dissipation in building envelope

    Moisture from outdoor

    Moisture from indoor

    Moisture carried by exfiltration

    Moisture transport by Diffusion in buidling envelope

    [Guylaine Desmarais, 1999]


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