COMPARISONS OF EMISSIONS OF POLAR AND NON-POLAR VOCS IN A ROOM

摘要

Building envelopes are usually comprised of several layers with different materials, which can significantly affect VOCs concentrations in indoor environments. These layers may act as source and sink alternatively depending on the different sorption and. diffusion potentials. This work employs a single zone model and it considers the different emission properties of building components, namely, the different sorption and diffusion characteristics of the side walls, the floor and the ceiling. In addition, each component comprises of several layers, which represents different construction materials. Two VOCs, ethyl acetate and n-octane, representing polar and nonpolar compounds respectively, are modeled to study the emission profiles in a room with several building materials.