Non-isothermal Diffusion of Water Vapour in Porous Building Materials

Non-isothermal diffusion is analysed using Fick's laws. The exact relations for non-isothermal diffusion flux and partial pressure profiles in porous building materials are derived and discussed

Models for Non-isothermal Steady-State Diffusion in Porous Building Materials

Two models for non-isothermal diffusion of water vapour in building materials have been developed and their numerical outputs compared with a standard isothermal approximation

Modified Glaser’s Condensation Model

Glaser's condensation scheme with incorporated non-isothermal diffusion is presented and its consequences are studied. Keywords: non-isothermal diffusion, partial pressure profile, condensation in building structures, Glaser's condensation scheme

Non-linear Temperature Profiles

Non-linear temperature profiles caused by temperature-dependent thermal conductivity l(T) of wall materials are discussed. Instead of conventional thermal resistance, modified effective resistance has been introduced

Modified Glaser’s Condensation Model

Glaser's condensation scheme with incorporated non-isothermal diffusion is presented and its consequences are studied. Keywords: non-isothermal diffusion, partial pressure profile, condensation in building structures, Glaser's condensation scheme