Abstract
Buildings have become very airtight nowadays. Accordingly, microbe pollution has become serious in indoorenvironment. In this paper, the authors present the indoor temperature and absolute humidity distributions by coupled analysis of CFD and hygrothermal transfer in building materials. Furthermore, the fungal index is adopted in order to estimate the risk of indoor fungal pollution. In conclusion, it is confirmed that the moisture adsorptive building materials has a significant effect to reduce the indoor fungal pollution.