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Optimum UV disinfection between concentric cylinders / Z. Ye in Industrial & engineering chemistry research, Vol. 47 N°10 (Mai 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°10 (Mai 2008) . - p. 3444–3452 Titre : Optimum UV disinfection between concentric cylinders Type de document : texte imprimé Auteurs : Z. Ye, Auteur ; L. J. Forney, Auteur ; T. Koutchma, Auteur ; A. T. Giorges, Auteur Année de publication : 2008 Article en page(s) : p. 3444–3452 Note générale : Bibliogr. p. 3452 Langues : Anglais (eng) Mots-clés : UV  disinfection;  Concentric  cylinders;  Laminar  Poiseuille  flow;  Turbulent  flow;  Laminar  Taylor−Couette  flow Résumé : To optimize UV disinfection of microbes between concentric cylinders, inactivation in the plug flow reactor geometries of laminar Poiseuille flow, turbulent flow, and laminar Taylor−Couette flow is investigated experimentally and numerically. It is found that there is an optimum ratio of radiation penetration depth to gap width λ/d for each of the three flow patterns. The optimum λ/d for laminar Poiseuille flow, turbulent flow, and laminar Taylor−Couette flow are 1.5, 1, and 0.5, respectively. It is also concluded that laminar Poiseuille flow provides inferior (small) inactivation levels while laminar Taylor−Couette flow provides superior (large) inactivation levels. The relative inactivation levels are as follows:  laminar Poiseuille flow < turbulent flow < laminar Taylor−Couette flow. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie0703641 [article] Optimum UV disinfection between concentric cylinders [texte imprimé] / Z. Ye, Auteur ; L. J. Forney, Auteur ; T. Koutchma, Auteur ; A. T. Giorges, Auteur . - 2008 . - p. 3444–3452. Bibliogr. p. 3452 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°10 (Mai 2008) . - p. 3444–3452 Mots-clés : UV  disinfection;  Concentric  cylinders;  Laminar  Poiseuille  flow;  Turbulent  flow;  Laminar  Taylor−Couette  flow Résumé : To optimize UV disinfection of microbes between concentric cylinders, inactivation in the plug flow reactor geometries of laminar Poiseuille flow, turbulent flow, and laminar Taylor−Couette flow is investigated experimentally and numerically. It is found that there is an optimum ratio of radiation penetration depth to gap width λ/d for each of the three flow patterns. The optimum λ/d for laminar Poiseuille flow, turbulent flow, and laminar Taylor−Couette flow are 1.5, 1, and 0.5, respectively. It is also concluded that laminar Poiseuille flow provides inferior (small) inactivation levels while laminar Taylor−Couette flow provides superior (large) inactivation levels. The relative inactivation levels are as follows:  laminar Poiseuille flow < turbulent flow < laminar Taylor−Couette flow. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie0703641