The Research On Analysis Method Of Moisture Transport In Buildings And Its Influence On Indoor Environment

The human residential environment is a significant problem that is currently focused social and technological attentions upon. Moisture and heat transfer in building enclosure structures is a threat to the service performance of building structures and the residential environment. Furthermore, as the development of the building energy consumption analysis technology, people commence to consider other factors that affect the air-conditioning load. The absorption and desorption of moisture by building enclosure and indoor furnishings is an important factor, as one third of the moisture generated in a room could be absorbed by its surface, which greatly temper the indoor air humidity. As mold and mildew growth furiously in damp buildings, more attention focus on body comfort in high humidity environment, and it has a significant influence on air-conditioning load, it important to do studies on heat and moisture transfer in building enclosures, especially in hot humid climates.In the beginning of this thesis two important aspect: the affect of mold growth in buildings and its control, indoor humidity and human health was discussed. Mold growing in buildings destroys building enclosures and shortens the construction's life. It also attaints the wall surface and affects its appearance. Furthermore, it links to bad indoor air quality (IAQ), and threat human's health. Considering the essential conditions for mold growing and spreading, mathematics models were developed in order to predict the possible intensity of mold propagation in a specific environment. Some pertinent measures had put forward. Finally, this paper stressed its importance to start the research on these aspects, especially for Mid-South and South China; In succession, based on thermal balance, skin moist, the friction between skin and clothing and respiratory comfort, this paper discussed the affect of air humidity on human comfort. Simultaneity, some useful mathematical models had been presented for comfort predicting.It is hard to describe the moisture transfer process and the equations solution is difficult, as it is affected by all kinds of factors such as: the heat transfer process, the vapor diffusion, the liquid diffusion, the diffusion on surface, the Knudsen diffusion, the capillary diffusion, the pure water-vapor diffusion and so on. In this paper, a transfer function method has been described to calculate dynamic moisture absorption and desorption by building materials in the hygroscopic range, and the dynamic...