Estudio Numérico de la Resistencia Térmica en Muros de Bloques de Concreto Hueco con Aislamiento Térmico

A numerical study of the thermal resistance in walls made of two different hollow concrete blocks is presented varying the external surface temperature. The effect of thermal insulation position, on the external concrete block surface and in the cavities, was analyzed. The theoretical model for the steady state was solved numerically with the finite differences technique and was compared with experimental results reported in literature. The thermal resistances for 0.12 m and 0.15 m blocks are 0.159 m²K/W and 0.171 m²K/W, respectively. The maximum thermal resistances after filling the cavities with thermal insulation are 0.407 m².K/W and 0.530 m².K/W for 0.12 m and 0.15 m blocks respectively. When the same volume of insulation is applied on the external surface, the thermal resistance values are 1.555 m².K/W and 2.147 m².K/W for 0.12 m and 0.15 m blocks respectively.