Experimental and theoretical study of a cone-jet for an electrospray microthruster considering the interference effect in an array of nozzles

Review on water electro-sprays and applications of charged drops with focus on the corona-assisted cone-jet mode for High Efficiency Air Filtration by wet electro-scrubbing of aerosols

“…The high surface-to-volume ratio of sprays with a particular interest for low cost, environment friendly and biocompatible water ES, has been applied to various domains, for: -propulsion by "colloidal" thruster in space, where contamination is not allowed except by water (Huberman et al, 1968;Velásquez-García et al, 2006;Alexander et al, 2007;Quang Tran Si et al, 2007;Gamero-Castaño, 2008;Tang HB et al, 2011;Borner et al, 2013;Morris et al, 2013), -agricultural application for crop spraying of water-based solutions of pesticides on fields (Coffee, 1981;Law, 1982), as well as in greenhouses (Geerse et al, 2000), -Gas conditioning in terms of temperature and humidity (Bailey, 1988;Cui et al, 2017), up to odor masking for domestic gas (Ganesan et al, 2016), -gas treatment for pollution abatement of harmful gases and suspended particles in exhaust fumes and smokes, detailed in the section 4, -water treatment as metal extraction (Parmentier et al, 2016), desalination by evaporation (Agostinho et al, 2018) or bio-decontamination (Pyrgiotakis et al, 2012;Machala et al, 2013;Kanev et al, 2014). -monodisperse nano-particles production by ES of sucrose solutions (Chen DR et al, 1995;Kaufman, 2000) now developed and sold by TSI™ and Ramem™ as size-calibrated aerosol generators.…”

Onset Voltage Modeling of Micromachined Colloid Thrusters

“…An increase in onset voltage is observed because the parasitic structure starts interfering with the emitter and one should note that the curve corresponds well with experimental results reported in literature. 4,5 Figures 8c and 8d finally show the influence of the sidewalls on the onset voltage as a function of extractor electrode distance and of standoff height of the capillaries. These results also allow to find a compromise between minimum capillary pitch and crosstalk.…”

“…Recent studies have focused on the influence of interference effects on the onset voltage in an array of nozzles. 4,5 These models do not include the effect of surface tension and require a calibration coefficient which needs to be found experimentally. To determine the onset voltage of micromachined thrusters manufactured in our lab, 6 we have developed a method that combines analytical and finite-element modeling.…”

Liquid Desiccant Dehumidification Systems: Jet Cross-Talking Effect in Multi-electrosprays

“…The electrospraying method has found use in various areas for the creation of monodisperse sprays of very fine drops in industry [20,21]. It is possible to use a single emitter or to have a number of emitters during the process, [17].…”

“…It is possible to use a single emitter or to have a number of emitters during the process, [17]. In the event that a jet is produced by a single emitter, the solo emitter offers advantages of elimination of cross talking of jets, nonetheless, the solo emitter have low flow rates thus its use compromises the electrospray process and the resultant dehumidification, [3,12,21].…”