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Atomization and Sprays
Editor-in-Chief Europe: Günter Brenn (open in a new tab)
Editor-in-Chief Americas: Marcus Herrmann (open in a new tab)
Редактор-основатель: Norman Chigier (open in a new tab)

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ISSN Печать: 1044-5110

ISSN Онлайн: 1936-2684

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ELECTRICAL AND SPRAY CHARACTERISTICS OF A MULTIORIFICE CHARGE-INJECTION ATOMIZER FOR ELECTRICALLY INSULATING LIQUIDS

Том 20, Выпуск 4, 2010, pp. 269-280
DOI: 10.1615/AtomizSpr.v20.i4.10
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Краткое описание

Electrostatic atomization of electrically insulating liquids has a number of potential uses with respect to combustion applications and the food processing industry. For charge-injection atomizers that generate well-dispersed spray plumes of this class of liquids, spray-specific charge is inextricably linked to the orifice diameter such that the product of these two variables is approximately constant. This, for a single-orifice atomizer, constrains the maximum flow rate against the mean spray drop diameter for a given pressure drop and spray-specific charge. A relaxation of this requirement is possible using a novel evolution of the high-voltage (HV) emitter electrode surface, permitting an orifice array to be used. This permits high spray charge densities at high flow rates without the precision alignment issues that face charge-injection atomizers that possess a pointed high-voltage electrode. Results show that current-voltage characteristics are very similar to a point-plane system, and both electrical and spray measurements revealed that the multiorifice atomizer is able to provide finely atomized jets even though there is a slight degradation in spray performance when introducing more holes.

Ключевые слова: charge injection atomizers, dielectric liquids, EHD
ЦИТИРОВАНО В
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  2. Kourmatzis A., Shrimpton J.S., Design and charge injection characteristics of an electrostatic dielectric liquid pulsed atomizer, Journal of Electrostatics, 70, 3, 2012. Crossref

  3. Kourmatzis Agissilaos, Ergene Egemen L., Shrimpton John S., Kyritsis Dimitrios C., Mashayek Farzad, Huo Ming, Combined aerodynamic and electrostatic atomization of dielectric liquid jets, Experiments in Fluids, 53, 1, 2012. Crossref

  4. Shrimpton John, Kourmatzis Agissilaos, Direct numerical simulation of forced flow dielectric EHD within charge injection atomizers, IEEE Transactions on Dielectrics and Electrical Insulation, 17, 6, 2010. Crossref

  5. Patel Manoj Kumar, Kundu Monika, Sahoo Hemant Kumar, Nayak Manoj Kumar, Enhanced performance of an air-assisted electrostatic nozzle: Role of electrode material and its dimensional considerations in spray charging, Engineering in Agriculture, Environment and Food, 9, 4, 2016. Crossref

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