Analysis of heat flow in composite structures used in window installation

Numerical calculations were performed with the ADINA System, which is based on the finite element method (FEM). The process of heat exchange between the interior with the constant temperature of 20 °C and the external environment with the temperature of −20 °C was simulated. Temperature distribution in the wall as well as the course of the 0° isotherm and the possibility of condensation in the wall were analysed. Moreover, corrosion and the economic aspects connected with the application of metal profiles used as reinforcements were taken into consideration. The numerical model for the sill beam without reinforcement was verified in experiments.