%0 Journal Article %A Kourmatzis, Agisilaos %A Allen, Jeff %A Shrimpton, John S. %D 2010 %I Begell House %K charge injection atomizers, dielectric liquids, EHD %N 4 %P 269-280 %R 10.1615/AtomizSpr.v20.i4.10 %T ELECTRICAL AND SPRAY CHARACTERISTICS OF A MULTIORIFICE CHARGE-INJECTION ATOMIZER FOR ELECTRICALLY INSULATING LIQUIDS %U https://www.dl.begellhouse.com/journals/6a7c7e10642258cc,454ec32d683e6c1b,63e12d777865e338.html %V 20 %X 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. %8 2010-05-21