Hygrothermal Initial Conditions - Case Studies

Abstract

In building simulations initial conditions express the actual hygrothermal state of building envelope. For the temperature field simulations initial condition is represented by the initial temperature in the body profile at the start of heat transfer. In-structure temperature varies quickly so temperature initial conditions are often neglected. The contribution shows various temperature initial conditions determination for insulated construction of outdoor test cell. We confirmed importance of setting the initial moisture condition for numerical analysis of complex heat and moisture transfer in multi-layer building components. Comparison of measured and calculated temperature profiles in structure show correctness initial condition consideration.