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Journal of Mechanical Science and Technology

, Volume 33, Issue 9, pp 4563–4572 | Cite as

Experimental study of electrostatic spray modes of high-flowrate water with horizontal nozzle

  • Yeonjoo Cho
  • Soyeon Kim
  • Hyunjeong Lim
  • Sangmi Choi
  • Minsung KimEmail author
Article
  • 30 Downloads

Abstract

Since the introduction of electrostatic spray technology for several decades, it has been configured most frequently with a vertical discharge nozzle. With a recent expansion in application areas, electrostatic spray with a horizontal nozzle has been studied in a narrow range of low volumetric flowrates. In this study, a horizontal discharge nozzle with an upright collector plate is experimented in consideration of its application to electrostatic precipitators. Using a large volumetric flowrate at the scale of milliliters per minute, the operation modes with horizontal nozzle are observed with high-speed digital cameras under different test conditions of nozzle sizes, nozzle-to-plate distances, and volumetric flowrates. The operation modes were classified and compared with the conventional electrostatic spraying modes. From the experiment, it is found that the nozzle diameter and the volumetric flowrate influence the spraying pattern while the applied voltage and nozzle-to-plate distance have a more defined impact on the determination of the modes. A novel spray map diagram was provided according to Reynolds number and electric field intensity. This diagram will serve to predict which modes will occur at certain geometric and flowrate conditions.

Keywords

Electrostatic spray Electrospinning Water spray Taylor cone 

Nomenclature

h

Nozzle to plate distance

V

Applied voltage

Q

Volumetric flowrate

D

Nozzle diameter

Re

Reynolds number

E

Electric field intensity

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Notes

Acknowledgments

This research was supported by the Chung-Ang University Graduate Research Scholarship in 2017. Also, this research was supported by the research program funded by Korea Institute of Energy Research (KIER B8-2451). Authors appreciate their support.

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Copyright information

© KSME & Springer 2019

Authors and Affiliations

  • Yeonjoo Cho
    • 1
  • Soyeon Kim
    • 1
  • Hyunjeong Lim
    • 1
  • Sangmi Choi
    • 1
  • Minsung Kim
    • 1
    Email author
  1. 1.School of Energy Systems EngineeringChung-Ang UniversitySeoulKorea

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