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Experimental Study on the Droplet Size and Charge-to-Mass Ratio of an Air-Assisted Electrostatic Nozzle

Author

Listed:
  • Shiqun Dai

    (High-Tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
    School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Jiayao Zhang

    (High-Tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
    School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Weidong Jia

    (High-Tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
    School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Mingxiong Ou

    (High-Tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
    School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Huitao Zhou

    (High-Tech Key Laboratory of Agricultural Equipment and Intelligence of Jiangsu Province, Jiangsu University, Zhenjiang 212013, China
    School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Xiang Dong

    (State Key Laboratory of Soil-Plant-Machinery System Technology, Chinese Academy of Agricultural Mechanization Sciences, Beijing 100083, China)

  • Hong Chen

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Ming Wang

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Yu Chen

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Shuai Yang

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

An air-assisted electrostatic nozzle uses a combination of air-assisted atomization and electrostatic spray technology. This article optimizes the existing air-assisted electrostatic nozzles in terms of structural design to obtain a higher charge-to-mass ratio and a smaller droplet size. The optimized air-assisted electrostatic nozzle was studied experimentally, and the effects of liquid pressure, air pressure and applied voltage on the droplet size and charge-to-mass ratio were investigated. Comparing the effects of air pressure, liquid pressure and applied voltage on the charge-to-mass ratio and droplet size, the relationship curves of the droplet size and charge-to-mass ratio under each voltage were fitted using the Rayleigh charge limit theory. For a higher CMR during the spray operation, applied voltages between 2.5 kV and 3 kV, an air pressure between 0.4 bar and 0.6 bar, and a liquid pressure of less than 0.9 bar could be chosen. The optimized air-assisted electrostatic nozzles not only have small droplets but also have high charge-to-mass ratios, reducing the need for pesticide use and thus protecting human health and the environment.

Suggested Citation

  • Shiqun Dai & Jiayao Zhang & Weidong Jia & Mingxiong Ou & Huitao Zhou & Xiang Dong & Hong Chen & Ming Wang & Yu Chen & Shuai Yang, 2022. "Experimental Study on the Droplet Size and Charge-to-Mass Ratio of an Air-Assisted Electrostatic Nozzle," Agriculture, MDPI, vol. 12(6), pages 1-15, June.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:6:p:889-:d:842990
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    Citations

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    Cited by:

    1. Xiuyun Xue & Kaixiang Zeng & Nengchao Li & Qin Luo & Yihang Ji & Zhen Li & Shilei Lyu & Shuran Song, 2023. "Parameters Optimization and Performance Evaluation Model of Air-Assisted Electrostatic Sprayer for Citrus Orchards," Agriculture, MDPI, vol. 13(8), pages 1-13, July.

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