The study of coupled transfer of heat, moisture and air in respirable walls

In this paper, we aim at studying the laws of heat, moisture and air transfer in the respirable walls. We developed a coupled unstable equation system of the heat, air and moisture transfer in the respirable walls with the third boundary condition. Because equal equation systems are a series of non-linearity equations, which include differential items, finite difference is adopted to solve the equation systems. The temperature, pressure and moisture distribution is given. Our study provides the science theoretic foundation for computation of coupled heat, moisture and air transfer in respirable walls.