AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
Abstract View
Experimental Investigation of a Multi-notched Electrospray
YANG ZHANG, Da-Ren Chen, Virginia Commonwealth University
Abstract Number: 364 Working Group: Instrumentation and Methods
Abstract Electrohydrodynamic spraying or electrospray (ES) has been widely proposed for various applications. It is because of its capability of generating highly charged, monodisperse particles in the diameters ranging from nanometers to micrometers. However, the industrial application via electrospray remains challenging because of low mass throughput of single-capillary ES systems. A multi-notched nozzle had been proposed to increase the mass throughput of ES. Difference from multiple-capillary ES reported in the literature, a multi-notched ES nozzle has multiple tips machined along the outer edge of nozzle exit. The electric field is intensified in the area around individual tips when the nozzle is exposed to an external electrical field. Multiple jets are emitted from the tips once the nozzle is fed in a spray liquid. In this work, the performance of multi-notched ES nozzle was evaluated with respect to its mass throughout and size distribution of particles. The I-V relationship was characterized. Particle size distributions were measured either by Scanning Mobility Particle Sizer (SMPS) or aerodynamic particle sizer (APS). The factors affecting the droplet size and spray current were investigated. The detail result of this work will be given in this presentation.