ELECTROSTATIC POROUS FILTER WITH A BLOCKING ELECTRODE

This work proposes to add to an electrostatic filter an auxiliary blocking electrode, charged by the same charge as the particles. The effect of the blocking electrode is to increase the collection efficiency of the electrostatic filter. Experiments performed on an electrostatic filter equipped with a permeable blocking electrode indicate that such an electrode roughly doubles the collection efficiency of the filter. A mathematical model was developed to account for the effect of the blocking electrode. The model facilitates calculations of the major parameters of the electrode, as part of a design of a more efficient electrostatic filter.