Modeling of Mass Diffusion in Porous Solids and Prediction of Indoor VOCs Concentration Based on Macroscopic Model Physical model and numerical analysis of VOCs emission from building materials Part 1

摘要

Indoor air pollution with VOCs emitted from building materials causes serious IAQ problems. It is important to predict their emission rate from the building materials and to evaluate indoor concentration of VOCs. Mass diffusion process in porous media and the convective and diffusive transfer process in room air Are fundamentals in estimating VOCs emission. In this paper the physical model of mass diffusion in porous media is derived and three macroscopic IAQ Prediction models based on the model are proposed.