Estudo do coeficiente de permeabilidade de mídia filtrante de celulose e sua variação com deposição de contaminantes

Abstract

This work addresses the correlation between automotive applications of cellulose papers used for air filtration in combustion engines and the permeability coefficient. The work presents experimental data from a specific cellulose media filtration application and correlates it with the physical laws governing flow. It also applies these laws to study the variation of the permeability coefficient of a filter media with the deposition of contaminants in its medium (dust deposited on the surface and inside the filter element). The study aims to find a correlation between the variation of the permeability coefficient of the cellulose media and the pressure variation in the engine’s air intake system, so that it becomes possible to predict the engine’s pressure drop and the filter element’s lifespan based on the average pore size and the average thickness of the media in question. In addition, it seeks to correlate the variation of the permeability of the paper as a function of the mass of dust deposited on the filter. The results presented support a relevant correlation and aim to justify further in-depth studies.