A Review of the Effects of Droplet Size and Flow Rate on the Chargeability of Spray Droplets in Electrostatic Agricultural Sprays

Post, Scott; Roten, Rory

doi:10.13031/trans.12516

Cited by 12 publications

(9 citation statements)

References 24 publications

(37 reference statements)

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“…Studies have shown that flow rate and conductivity of the dispersed phase have major effects on the droplet chargeability, which influences the droplet size. Generally, the decrease in flow rate and increase in conductivity of the sprayed liquid lead to increased droplet charge and reduced drop size . This could be significant, particularly for reactions that are limited by mass transfer due to low interfacial areas.…”

Section: Results and Discussionsupporting

confidence: 92%

“…Generally, the decrease in flow rate and increase in conductivity of the sprayed liquid lead to increased droplet charge and reduced drop size. 33 This could be significant, particularly for reactions that are limited by mass transfer due to low interfacial areas. In this work, various flow rates and conductivities of the aqueous dispersed phase were studied.…”

Section: Methodssupporting

confidence: 92%

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Electrospray-Based Flow Reaction System for Intensified Transfer Hydrogenation of Acetophenone

Wang

Allgeier

Weatherley

2021

Ind. Eng. Chem. Res.

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A flow reaction system based on electrospray was established to study the phase-transfer hydrogenation of acetophenone. Electrospray was targeted as an energy-efficient option for enhancing liquid−liquid mass transfer. Aqueous solution of sodium formate was continuously sprayed into the organic phase under the influence of an external electric field. An increase of the applied voltage resulted in an increase in conversion and yields. The polarity of applied electric fields was found to show no effect on the reaction performance. The induced electric current in the reaction system due to the increased conductivity of the continuous organic phase correlated to the improved reaction conversion and yields. The conversion in the electrospray system reached 71% in 1 h, showing a significant improvement with much less energy consumption compared to that in a stirred batch system.

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Section: Results and Discussionsupporting

confidence: 92%

Section: Methodssupporting

confidence: 92%

Electrospray-Based Flow Reaction System for Intensified Transfer Hydrogenation of Acetophenone

Wang

Allgeier

Weatherley

2021

Ind. Eng. Chem. Res.

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“…They found no effect of different forward speeds on deposition. Although electrostatic spraying has great potential as a pesticide application technique (Post and Roten, 2018), it is necessary to continue improving this technology and to better understand the behaviour of electrostatic droplets in comparison with traditional spraying systems in vineyards (O'Donnell et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of leaf deposit quality between electrostatic and conventional multi-row sprayers in a trellised vineyard

et al. 2020

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…The uniformity of droplet distribution, drift, and coverage of the target are the main indicators for evaluating spray quality 17,18 . We found that droplet size, droplet volume median diameter, and droplet number median diameter strongly affected droplet deposition 19 .…”

Section: Discussionmentioning

confidence: 99%

Leaf Surface Characteristics Affect the Deposition and Distribution of Droplets in Rice (Oryza Sativa L.)

GuangMei

Chen

Zhang

et al. 2021

Preprint

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We studied the effects of leaf surface characteristics on canopy droplet behaviour using two rice cultivars with similar leaf shapes but significantly different leaf surface characteristics: Jia58 (glabrous rice; smooth leaf surface and no burrs) and Yongyou12 (hairy-leaved rice; rough leaf surface covered with burrs). The plants were subjected to spray tests with different spray pressures and nozzle apertures. The results show that the deposition amount per unit leaf area was significantly higher in the Yongyou12 canopy than in the Jia58 canopy. The diameter, volume median diameter, number median diameter, and coverage of droplets were significantly higher in Yongyou12 than in Jia58, while the coverage density of droplets was significantly lower. The proportion of small droplets of Jia58 is higher than that of Yongyou12. Thus, a larger amount of large-sized droplets could retain on the leaf surface of hairy-leaved rice, and a larger number of small-sized droplets were retained on the leaf surface of glabrous rice. Smaller pressure and larger flow nozzle were conducive to the retention of the Jia58, while Yongyou12 required larger pressure and larger flow nozzles. Ultrastructural analyses revealed that the leaf surface of glabrous rice had no trichomes and more wax than hairy-leaved rice, and the critical surface tension was lower, resulting in the retention of mainly small droplets on its leaf surface and a lower deposition amount. Therefore, in order to increase the deposition of pesticide droplets on the leaf surface in production, glabrous rice should choose nozzles with smaller spray pressure and large flow rate.

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A Review of the Effects of Droplet Size and Flow Rate on the Chargeability of Spray Droplets in Electrostatic Agricultural Sprays

Cited by 12 publications

References 24 publications

Electrospray-Based Flow Reaction System for Intensified Transfer Hydrogenation of Acetophenone

Electrospray-Based Flow Reaction System for Intensified Transfer Hydrogenation of Acetophenone

Evaluation of leaf deposit quality between electrostatic and conventional multi-row sprayers in a trellised vineyard

Leaf Surface Characteristics Affect the Deposition and Distribution of Droplets in Rice (Oryza Sativa L.)

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