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Deduction and application of filtration and cleaning indices for aerosol filtration operations using nonwoven fabrics as filters
Author(s) -
Sánchez Javier R.,
Rodríguez J.M.,
Alvaro A.,
Estévez A.M.
Publication year - 2010
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.10355
Subject(s) - filtration (mathematics) , dimensionless quantity , filter (signal processing) , aerosol , process engineering , environmental science , air filtration , environmental engineering , materials science , pulp and paper industry , mathematics , engineering , chemistry , mechanics , statistics , physics , organic chemistry , indoor air quality , electrical engineering
The characteristics and properties of fabrics used to make filters, as well as the operation conditions, affect filtration and filter cleaning performance. Accordingly, it is appropriate to group, as done here, such characteristics in dimensionless numbers in order to compare different fabrics used in the filtration of gases in a simple way. In this sense, the authors have previously proposed certain parameters generically termed filtration indices and here these were deduced using dimensional analysis. What we have named cleaning efficiency index is also considered to evaluate the efficiency of a cleaning system. These parameters, and others widely discussed in the literature, were applied to the experimental results obtained by the authors in the filtration of fly ash aerosols with different nonwoven fabrics. Additionally, certain experimental results of other authors are used. The results show that the filtration and cleaning indices may be useful for the comparison of fabrics required for specific applications. © 2009 American Institute of Chemical Engineers Environ Prog, 2010