Frequency domain regression method to predict thermal behavior of brick wall of existing buildings

Simulation results indicated that thermal insulation is able to enhance the thermal behavior of massive wall, and that insulation thickness has influence on the profile of heat flux. The optimum insulation thicknesses for internal insulation vary between 5.5 and 12.4 cm, vary between 4.9 and 8.4 cm for external insulation depending on the fuel types.