Design and performance test of a novel UAV air-assisted electrostatic centrifugal spraying system.

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Bibliographic Details
Title:	Design and performance test of a novel UAV air-assisted electrostatic centrifugal spraying system.
Authors:	Heming Hu¹ hu-heming950211@g.ecc.u-tokyo.ac.jp, Yutaka Kaizu¹ kaizu@g.ecc.u-tokyo.ac.jp, Jingjing Huang^2,3 huangjingjing2016@gmail.com, Kenichi Furuhashi¹ kfuruhashi@g.ecc.u-tokyo.ac.jp, Hongduo Zhang¹ zhdhnhr@outlook.com, Xu Xiao⁴ 395949410@qq.com, Ming Li^2,4 liming@hunau.net, Kenji Imou¹ k-imou@g.ecc.u-tokyo.ac.jp
Source:	International Journal of Agricultural & Biological Engineering. Sep2022, Vol. 15 Issue 5, p34-40. 7p.
Subjects:	Electrostatic atomization, Electrostatic accelerators, Test design, Spraying & dusting in agriculture, Drone aircraft
Abstract:	In order to improve the deposition and uniformity of the pesticide sprayed by the agricultural spraying drone, this study designed a novel spraying system, combining air-assisted spraying system with electrostatic technology. First, an air-assisted electrostatic centrifugal spray system was designed for agricultural spraying drone, including a shell, a diversion shell, and an electrostatic ring. Then, experiments were conducted to optimize the setting of the main parameters that affect the charge-to-mass ratio, and outdoor spraying experiments were carried out on the spraying effect of the air-assisted electrostatic centrifugal spray system. The results showed the optimum parameters were that the centrifugal rotation speed was 10 000 r/min, the spray pressure was 0.3 MPa, the fan rotation speed was 14 000 r/min, and the electrostatic generator voltage was 9 kV; The optimum charge-to-mass ratio of the spray system was 2.59 mC/kg. The average deposition density of droplets on the collecting platform was 366.1 particles/cm2 on the upper layer, 345.1 particles/cm2 on the middle layer, and 322.5 particles/cm2 on the lower layer. Compared to the results of uncharged droplets on the upper, middle, and lower layers, the average deposition density was increased by 34.9%, 30.4%, and 30.2%, respectively, and the uniformity of the distribution of the droplets at different collection points was better. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	In order to improve the deposition and uniformity of the pesticide sprayed by the agricultural spraying drone, this study designed a novel spraying system, combining air-assisted spraying system with electrostatic technology. First, an air-assisted electrostatic centrifugal spray system was designed for agricultural spraying drone, including a shell, a diversion shell, and an electrostatic ring. Then, experiments were conducted to optimize the setting of the main parameters that affect the charge-to-mass ratio, and outdoor spraying experiments were carried out on the spraying effect of the air-assisted electrostatic centrifugal spray system. The results showed the optimum parameters were that the centrifugal rotation speed was 10 000 r/min, the spray pressure was 0.3 MPa, the fan rotation speed was 14 000 r/min, and the electrostatic generator voltage was 9 kV; The optimum charge-to-mass ratio of the spray system was 2.59 mC/kg. The average deposition density of droplets on the collecting platform was 366.1 particles/cm2 on the upper layer, 345.1 particles/cm2 on the middle layer, and 322.5 particles/cm2 on the lower layer. Compared to the results of uncharged droplets on the upper, middle, and lower layers, the average deposition density was increased by 34.9%, 30.4%, and 30.2%, respectively, and the uniformity of the distribution of the droplets at different collection points was better. [ABSTRACT FROM AUTHOR]
ISSN:	19346344
DOI:	10.25165/j.ijabe.20221505.6891