Eficiencia de la ventilacion en locales de extraccion de viviendas. Ventilation efficiency in typical configurations of air extraction in residential buildings.

The objective of this paper is to expose the obtained results of ventilation efficiency in thetypical configurations of air extraction in residential buildings and, specifically, in the bathroomscases. Most representative typologies have been analyzed by means of a double study: an experimental model performed in laboratory with tracer gas and photo-acoustics techniques, and a numerical model with CFD software (Computational Fluid Dynamics).That stage, and the experimental validation of the numerical process, has allowed the infographicsimulation of a new and extensive cases variety. Its results show conclusions about a suitable architectonic design of the bathrooms in residential buildings, and how improving its inner air quality.In general, the obtained efficiencies results for the displacement models are worse than expected for a model of perfect displacement flow. Best efficiency is obtained when the extraction hole is in the walls around the bath or shower. Placing it near the door represents, on the contrary, the worst of all cases studied.