Research on the Simulation of Hygrothermal Distribution of Stone Wool ETICS

摘要

Stone wool external thermal insulation composite system is used more and more in China now. Former studies in China simply consider that water vapour permeability of render coating should be equal to the water vapour permeability of stone wool. Neither is there any necessary indicator for the liquid water (wind-driven rain) for the system. Therefore, an important issue to be solved currently is how to propose reasonable indicators for water vapour and liquid water transfer performance in stone wool system for different climate zones in China. This research studied on the simulation of hygrothermal distribution of stone wool system. Simulations of stone wool systems were done under different outdoor temperature, humidity, wind driving rain and other conditions to analyze the moisture content in each layer of the system. Meanwhile, simulations of different render coating performances were also done to analyze the moisture content in each layer. Based on these, indicators for water vapour and liquid water were proposed, which provides a foundation for the stone wool external thermal insulation composite system standards in China.