Theory for the Heat and Moisture Transport Interface
The Heat and Moisture multiphysics coupling implements the following equations for heat and moisture transport, derived from Ref. 15:
(4-104)
(4-105)
where:
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(ρCp)eff (SI unit: J/(m3·K)) is the effective volumetric heat capacity at constant pressure.
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T (SI unit: K) is the temperature.
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keff (SI unit: W/(m·K)) is the effective thermal conductivity.
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Lv (SI unit: J/kg) is the latent heat of evaporation.
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δp (SI unit: s) is the vapor permeability.
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φ (dimensionless) is the relative humidity.
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psat (SI unit: Pa) is the vapor saturation pressure.
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Q (SI unit: W/m3) is the heat source.
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ξ (SI unit: kg/m3) is the moisture storage capacity.
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Dw (SI unit: m2/s) is the moisture diffusivity.
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G (SI unit: W/m3) is the moisture source.