Abstract
The filter media used in industrial air cleaning, if they are regenerable, are subjected to clogging and cleaning cycles. Their performance is closely linked to these two operating phases. A model of the phenomena based on the assumption of patchy cleaning is presented. The aim of the study was to determine the pattern of a parameter representative of cleaning, namely the cleaned fraction, from experimental values of the residual pressure drop of a filter medium subjected to given filtration conditions. This characterisation then allows the pressure drop pattern of the filter medium over a number of cycles to be determined. A comparison was made with the experimental results obtained on a laboratory test rig. Close agreement was observed, which confirms the hypothesis of patchy cleaning in this approach to describe the filtration and cleaning phenomena of a filter medium.
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