External factors influencing contamination emission from porous materials

Based on a contamination emission model, analyses the influences of indoor temperature, mass transfer coefficient and air changes on contamination emission from porous materials. The results show that the influence of indoor temperature is very obvious and the higher temperature is, the shorter emission time is; increasing mass transfer coefficient can not apparently accelerate contamination emission but reducing the coefficient can restrain contamination emission; the influence of air changes is obscure but indoor contamination concentration can be controlled by changing air changes.