Abstract

GIJON-RIVERA, M.; SERRANO-ARELLANO, J.; XAMAN, J.  and  ALVAREZ, G.. Effect of different building materials on conjugate heat and mass transfer. Ingenier. mecáni. tecnolog. desarroll [online]. 2016, vol.5, n.4, pp.395-404. ISSN 1665-7381.

A numerical analysis of the effect of heat conduction of different building materials on conjugate heat and mass transfer in a square cavity is presented. The air fluid inside the cavity is contaminated with Carbon Dioxide (CO2). The governing equations of mass, momentum, energy and concentration with a turbulent k-ε model were solved by the finite-volume technique. From the thermal point of view, case A (adobe block) was the optimal configuration in order to reach comfortable conditions. In general, the case B (red brick) was the best choice for air quality purposes with a difference of 200 ppm with respect to other building materials for all Rayleigh numbers under study.

Keywords : Heat conduction; turbulent natural convection; mass transfer; surface thermal radiation; square cavity.