Abstract
Energy consumption attributed to buildings amounts to approximately 30% globally. This consumption is even greater in buildings that lack climate adaptation strategies. In warm climates, solar control devices protect from thermal gains by direct solar radiation as a strategy to avoid overheating in buildings. Ventilated facades increase the energy efficiency of said devices when harnessing the convective cooling produced by the temperature and pressure differential inside the ventilated facade. The present research shows the thermal behaviour of an opaque ventilated facade through numerical modelling in ANSYS Fluent® computational fluid dynamics software in an extreme hot dry climate. The objective of the study was to analyze the effect of a ventilated facade on the thermal performance of the wall immediately adjacent to the living space as a passive convective cooling system. The variables analyzed were thickness of the air cavity, ambient temperature and wind speed of the external environment, as well as its effect on the surface temperature of the wall adjacent to the living space. The results show a decrease in the surface temperature of the wall, which reduces the total cooling load of the building.
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