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Design optimization of twin-fluid atomizers with an internal mixing chamber for heavy fuel oils

AuthorsFerreira, G.; García, J. A.; Barreras Toledo, Félix; Lozano Fantoba, Antonio; Lincheta Mesa, Eduardo
Issue Date2009
CitationFuel Processing Technology 90: 270-278 (2009)
AbstractThe present work is devoted to determine the magnitude of the main parameters that yield the optimum results for twin-fluid nozzles with an internal mixing chamber. The focus is placed on the study of the interaction of both air and liquid flows at the internal chamber and its effects on the resulting spray. To this end, some experiments have been performed for different air central channel diameters and liquid ports, as well as for several experimental conditions (air and liquid mass flow rates), in order to understand the influence of the flow conditions at the mixing chamber on the size of the droplets produced. It has been demonstrated that under certain experimental conditions the atomizing fluid discharged to the internal chamber is choked. The sonic condition is achieved for different air and liquid mass flow rates as a function of the air central channel diameter. It has also been obtained that to achieve the best results with moderate atomizing fluid flow rates, it is convenient to operate in choked conditions. This is an important result that will help in the optimum design of this type of nozzles. © 2008 Elsevier B.V. All rights reserved.
Identifiersdoi: 10.1016/j.fuproc.2008.09.013
issn: 0378-3820
Appears in Collections:(LIFTEC) Artículos
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