Influence of working pressure and spray nozzle on the distribution of spray liquid in manual backpack sprayers

Marangoni, Alcides; Ferreira, Marcelo da Costa

doi:10.1590/1808-1657000442018

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…The control of diseases, insects, and weeds in the production of crops is directly linked to the technology of application of pesticides (Cunha et al, 2016), and the spray nozzle is particularly important because it is responsible for the production and distribution of droplets, which can be considered the most important item of sprayers (Marangoni Junior and da Costa Ferreira, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Droplet size is affected by nozzle type and orifice size, liquid properties, and spray pressure (Nuyttens et al, 2009). The operating pressure of sprayers affects the droplet size in the direction of the higher the pressure and the smaller the droplet size (Marangoni Junior and da Costa Ferreira, 2019). However, the size of the droplets produced does not always follow a uniform distribution, and droplets of different sizes can be produced by a single nozzle.…”

Section: Introductionmentioning

confidence: 99%

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Effect of nozzle type and pressure on spray droplet characteristics

Martins

Moraes

Freitas

et al. 2021

Idesia

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Spray nozzles can be considered the most important items of sprayers, and the ideal nozzle-pressure combination plays a major role in the effectiveness of pest control in the field. Spray nozzle manufacturers often develop, and make new alternatives available on the market; however, studies are always important to verify the behavior of these new technologies concerning the spectrum of the droplets produced. Therefore, the present study aimed to evaluate the spectrum of droplets generated by four spray nozzles (FC3D 100-02; VP 110-02; TR 110-02 and TT 110-02) under different working pressures (138, 207, 276, 345, and 414 kPa). For this, a factorial scheme in a completely randomized design with four replications was used. The parameters evaluated were volumetric median diameter (VMD), relative amplitude (Span), and the percentage of droplets with a diameter smaller than 100 μm (<100 μm). The spray nozzles models and the working pressure had a direct effect on the droplet size. Furthermore, there were no significant differences between the TR 110-02 and VP 110-02 models for the percentage of spray volume containing droplets <100 μm neither for the VMD. Lastly, the increase of pressure resulted in an increasing linear effect on the Span index for the FC3D 100-02 nozzle.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of nozzle type and pressure on spray droplet characteristics

Martins

Moraes

Freitas

et al. 2021

Idesia

View full text Add to dashboard Cite

show abstract

Alluvial tin mining by spray-suction borehole method: a case study on remaining alluvial tin reserves in Bangka Belitung, Indonesia

Ichwan

Wibowo

Komang

et al. 2022

PMI

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The area of the Bangka Belitung Islands, which is a potential area for alluvial tin deposits in Indonesia, has been affected by the destruction of tin reserves on the mainland due to rampant artisanal mining, which has left remnants of small-dimensional reserves. The remnants of these reserves can no longer be mined using the hydraulic mining of open pit method due to the small dimensions of the deposits. The hypothesis is that such sedimentary conditions can only be mined by the borehole method. This research aimed to design tools and perform test mining using the borehole method with a spray-suction mechanism. This research produced a novelty, namely, a method and parameters for alluvial tin deposits mining using borehole mining methods, such as the excavation capacity, excavation radius, mining recovery, and dilution factor. The benefit of this research is expected to provide an opportunity to increase the amount of onshore alluvial tin reserves to support tin production.

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Influence of working pressure and spray nozzle on the distribution of spray liquid in manual backpack sprayers

Cited by 2 publications

References 14 publications

Effect of nozzle type and pressure on spray droplet characteristics

Effect of nozzle type and pressure on spray droplet characteristics

Alluvial tin mining by spray-suction borehole method: a case study on remaining alluvial tin reserves in Bangka Belitung, Indonesia

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