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Measurement of dynamic liquid distributions in a fixed bed using electrical capacitance tomography and capacitance wire-mesh sensor / Bartosz Matusiak in Industrial & engineering chemistry research, Vol. 49 N° 5 (Mars 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2070–2077 Titre : Measurement of dynamic liquid distributions in a fixed bed using electrical capacitance tomography and capacitance wire-mesh sensor Type de document : texte imprimé Auteurs : Bartosz Matusiak, Auteur ; Marco Jose da Silva, Auteur ; Uwe Hampel, Auteur Année de publication : 2010 Article en page(s) : pp. 2070–2077 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Measurement  of  Dynamic;  Electrical  Capacitance;  Tomography;  Wire-Mesh  Sensor;  Media  supply;  ECT Résumé : An intricate problem associated with fixed bed operation is liquid maldistribution, which denotes the fact that the liquid does not homogeneously flow through the bed. In a comparative study we evaluated two capacitance imaging methods—capacitance wire-mesh sensor and electrical capacitance tomography (ECT)—with respect to their capability of measuring static and dynamic liquid holdup in a fixed bed. The capacitance wire-mesh sensor as an invasive instrument is able to disclose flow structures at higher spatial resolution and was therefore considered the reference instrument for liquid holdup measurement. We found that both methods predict dynamic liquid holdup in the column in a similar way with only small systematic deviation. The results therefore prove that noninvasive electrical capacitance tomography can reliably measure cross-sectional dynamic liquid holdup in a fixed bed, even with a simple and fast linear back projection reconstruction algorithm. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/toc/IECRED/49/5 [article] Measurement of dynamic liquid distributions in a fixed bed using electrical capacitance tomography and capacitance wire-mesh sensor [texte imprimé] / Bartosz Matusiak, Auteur ; Marco Jose da Silva, Auteur ; Uwe Hampel, Auteur . - 2010 . - pp. 2070–2077. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 5 (Mars 2010) . - pp. 2070–2077 Mots-clés : Measurement  of  Dynamic;  Electrical  Capacitance;  Tomography;  Wire-Mesh  Sensor;  Media  supply;  ECT Résumé : An intricate problem associated with fixed bed operation is liquid maldistribution, which denotes the fact that the liquid does not homogeneously flow through the bed. In a comparative study we evaluated two capacitance imaging methods—capacitance wire-mesh sensor and electrical capacitance tomography (ECT)—with respect to their capability of measuring static and dynamic liquid holdup in a fixed bed. The capacitance wire-mesh sensor as an invasive instrument is able to disclose flow structures at higher spatial resolution and was therefore considered the reference instrument for liquid holdup measurement. We found that both methods predict dynamic liquid holdup in the column in a similar way with only small systematic deviation. The results therefore prove that noninvasive electrical capacitance tomography can reliably measure cross-sectional dynamic liquid holdup in a fixed bed, even with a simple and fast linear back projection reconstruction algorithm. Note de contenu : Bibliogr. ISSN : 0888-5885 En ligne : http://pubs.acs.org/toc/IECRED/49/5