Modelling the pressure drop across HEPA filters during cake filtration in the presence of humidity
Identifieur interne : 000776 ( Hal/Corpus ); précédent : 000775; suivant : 000777Modelling the pressure drop across HEPA filters during cake filtration in the presence of humidity
Auteurs : Aurélie Joubert ; Jean-Claude Laborde ; Laurent Bouilloux ; Sandrine Chazelet ; Dominique ThomasSource :
- Chemical Engineering Journal [ 1385-8947 ] ; 2011.
English descriptors
Abstract
The modelling of the variation in the pressure drop across a HEPA filter during cake filtration in the presence of humidity was studied. A semi-empirical model was developed that considers the pressure drop across the clogged filter as the sum of the pressure drops across the clean filter and across the cake, which is itself decomposed into several successive layers. The pressure drop across each layer of particles depends on its state of equilibrium with the air humidity. The model includes the specific resistance of each layer of particles and its variation when the cake is exposed to a flow of moist air. This model applies for relative humidity below the deliquescent point of the aerosol if it is hygroscopic. The results show good agreement between the calculated values and experimental values for flat filters clogged with aluminium oxide and sodium chloride test aerosols. The model also revealed the influence of filtration time on the evolution of the pressure drop across a clogged filter in the presence of humidity, especially with a hygroscopic aerosol.
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DOI: 10.1016/j.cej.2010.11.033
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A semi-empirical model was developed that considers the pressure drop across the clogged filter as the sum of the pressure drops across the clean filter and across the cake, which is itself decomposed into several successive layers. The pressure drop across each layer of particles depends on its state of equilibrium with the air humidity. The model includes the specific resistance of each layer of particles and its variation when the cake is exposed to a flow of moist air. This model applies for relative humidity below the deliquescent point of the aerosol if it is hygroscopic. The results show good agreement between the calculated values and experimental values for flat filters clogged with aluminium oxide and sodium chloride test aerosols. The model also revealed the influence of filtration time on the evolution of the pressure drop across a clogged filter in the presence of humidity, especially with a hygroscopic aerosol.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Modelling the pressure drop across HEPA filters during cake filtration in the presence of humidity</title><author role="aut"><persName><forename type="first">Aurélie</forename><surname>Joubert</surname></persName><email></email><idno type="halauthor">200420</idno><affiliation ref="#struct-132004"></affiliation><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">Jean-Claude</forename><surname>Laborde</surname></persName><email></email><idno type="halauthor">813616</idno><affiliation ref="#struct-132004"></affiliation></author><author role="aut"><persName><forename type="first">Laurent</forename><surname>Bouilloux</surname></persName><email></email><idno type="halauthor">813617</idno><affiliation ref="#struct-132004"></affiliation></author><author role="aut"><persName><forename type="first">Sandrine</forename><surname>Chazelet</surname></persName><email></email><idno type="halauthor">812688</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">Dominique</forename><surname>Thomas</surname></persName><email></email><idno type="halauthor">164269</idno><affiliation ref="#struct-211875"></affiliation></author><editor role="depositor"><persName><forename>Dominique</forename><surname>Thomas</surname></persName><email>dominique.thomas@univ-lorraine.fr</email></editor></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2011-01-11 11:21:30</date><date type="whenModified">2016-05-17 10:13:28</date><date type="whenReleased">2011-01-11 11:21:30</date><date type="whenProduced">2011</date></edition><respStmt><resp>contributor</resp><name key="179924"><persName><forename>Dominique</forename><surname>Thomas</surname></persName><email>dominique.thomas@univ-lorraine.fr</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">hal-00554735</idno><idno type="halUri">https://hal.archives-ouvertes.fr/hal-00554735</idno><idno type="halBibtex">joubert:hal-00554735</idno><idno type="halRefHtml">Chemical Engineering Journal, Elsevier, 2011, 166 (2), pp.616-623. <10.1016/j.cej.2010.11.033></idno><idno type="halRef">Chemical Engineering Journal, Elsevier, 2011, 166 (2), pp.616-623. <10.1016/j.cej.2010.11.033></idno></publicationStmt><seriesStmt><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="LRGP-UL">LRGP</idno><idno type="stamp" n="IRSN">IRSN - Institut de radioprotection et de sûreté nucléaire</idno><idno type="stamp" n="UNIV-LORRAINE">Université de Lorraine</idno></seriesStmt><notesStmt><note type="audience" n="2">International</note><note type="popular" n="0">No</note><note type="peer" n="1">Yes</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Modelling the pressure drop across HEPA filters during cake filtration in the presence of humidity</title><author role="aut"><persName><forename type="first">Aurélie</forename><surname>Joubert</surname></persName><idno type="halAuthorId">200420</idno><affiliation ref="#struct-132004"></affiliation><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">Jean-Claude</forename><surname>Laborde</surname></persName><idno type="halAuthorId">813616</idno><affiliation ref="#struct-132004"></affiliation></author><author role="aut"><persName><forename type="first">Laurent</forename><surname>Bouilloux</surname></persName><idno type="halAuthorId">813617</idno><affiliation ref="#struct-132004"></affiliation></author><author role="aut"><persName><forename type="first">Sandrine</forename><surname>Chazelet</surname></persName><idno type="halAuthorId">812688</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">Dominique</forename><surname>Thomas</surname></persName><idno type="halAuthorId">164269</idno><affiliation ref="#struct-211875"></affiliation></author></analytic><monogr><idno type="localRef">SAFE</idno><idno type="halJournalId" status="VALID">11608</idno><idno type="issn">1385-8947</idno><title level="j">Chemical Engineering Journal</title><imprint><publisher>Elsevier</publisher><biblScope unit="volume">166</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="pp">616-623</biblScope><date type="datePub">2011</date></imprint></monogr><idno type="doi">10.1016/j.cej.2010.11.033</idno></biblStruct></sourceDesc><profileDesc><langUsage><language ident="en">English</language></langUsage><textClass><keywords scheme="author"><term xml:lang="en">HEPA filter</term><term xml:lang="en">Pressure drop</term><term xml:lang="en">Modelling</term><term xml:lang="en">Relative humidity</term><term xml:lang="en">Cake filtration</term><term xml:lang="en">Hygroscopicity</term></keywords><classCode scheme="halDomain" n="spi.gproc">Engineering Sciences [physics]/Chemical and Process Engineering</classCode><classCode scheme="halTypology" n="ART">Journal articles</classCode></textClass><abstract xml:lang="en">The modelling of the variation in the pressure drop across a HEPA filter during cake filtration in the presence of humidity was studied. A semi-empirical model was developed that considers the pressure drop across the clogged filter as the sum of the pressure drops across the clean filter and across the cake, which is itself decomposed into several successive layers. The pressure drop across each layer of particles depends on its state of equilibrium with the air humidity. The model includes the specific resistance of each layer of particles and its variation when the cake is exposed to a flow of moist air. This model applies for relative humidity below the deliquescent point of the aerosol if it is hygroscopic. The results show good agreement between the calculated values and experimental values for flat filters clogged with aluminium oxide and sodium chloride test aerosols. The model also revealed the influence of filtration time on the evolution of the pressure drop across a clogged filter in the presence of humidity, especially with a hygroscopic aerosol.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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