System of mathematical equations to predict wear rate on circular-cone orifice of pesticide spray nozzles

Singh, Akshay Kumar; Bhatt, Y. C.; Dhande, K. G.; Wandkar, Sachin Vilas; Stanley, Nishant M

doi:10.33440/j.ijpaa.20190202.52

Cited by 2 publications

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“…This system depends on the flow rate of nozzles as an indicator of the wear rate and also includes physical parameters (one being the accelerated wear test) for nozzles made of different materials. Results reveal that the developed system could be applied to predict wear rates, since experimental and calculated values were strongly related [14].…”

Section: Introductionmentioning

confidence: 97%

Evaluation of Different Internal Designs of Hydraulic Nozzles under an Accelerated Wear Test

2022

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The use of worn-out agricultural nozzles in pesticide application has a negative effect on the efficiency and cost of the application process. It also has an effect on environmental pollution due to an excessive amount of pesticide being applied when spraying with worn-out nozzles. In this paper, the resistance to wear of three different internal design hydraulic nozzles was ascertained. Changes in the flow rate and spray distribution as a result of this wear were also investigated. The wear test was done inside a closed system, and it was accelerated using an abrasive material to generate 100 h of wear. The tested nozzles were the Turbo TeeJet (TT)-twin chambered, Turbo Twinjet (TTj60)-dual outlet, and Drift Guard (DG)-pre-orifice. Wear rate, flow rate, and the virtual coefficient of variation (CVv) were measured at different wear intervals. The results showed that the TTj60 type was the most resistant to wear, followed by the TT type and DG. The latter two types showed an increase in the flow rate only in the first 45 h of wear. Virtual coefficient of variation (CVv) values were less than 10% after finishing the test (after 100 h of wear) for the three types of nozzles, which are acceptable values according to International Organization for Standardization (ISO) 16122-2, 2015.

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Section: Introductionmentioning

confidence: 97%

Evaluation of Different Internal Designs of Hydraulic Nozzles under an Accelerated Wear Test

2022

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“…These nozzles contain a component called a diffuser, which has openings through which the pressurized spray is sprayed. In this process, a rotational velocity vector is generated in the fluid, which increases the pressure drop in the narrow zone between the diffuser and circular orifice disk [15], causing the spray to be sprayed in a spherical shape with fewer droplets in the center. The formation of smaller droplets by the hollow cone nozzles makes the application more prone to drift but tends to provide better coverage on the target.…”

Section: Introductionmentioning

confidence: 99%

Use of Unmanned Aerial Vehicle for Pesticide Application in Soybean Crop

Lopes,

Cunha,

Nomelini

2023

AgriEngineering

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The use of unmanned aerial vehicles (UAVs) for pesticide application has increased substantially. However, there is a lack of technical information regarding the optimal operational parameters. The aim of this study was to evaluate the quality of pesticide application on a soybean crop using a UAV employing different spray nozzles. The experiments were conducted using a completely randomized design with four treatments and eight repetitions. The trial was conducted in a soybean growing area during the soybean reproductive stage (1.1 m tall). The treatments included aerial application (rate: 10 L hm−2) using an Agras MG1-P UAV with XR 11001 (flat fan), AirMix 11001 (air-induction flat fan), and COAP 9001 (hollow cone spray) nozzles; for comparison, ground application (rate of 100 L hm−2) using a constant pressure knapsack sprayer with an XR 110015 (flat fan) nozzle was performed. The deposition was evaluated by quantifying a tracer (brilliant blue) using spectrophotometry and analyzing the droplet spectrum using water-sensitive paper. Furthermore, the application quality was investigated using statistical process control methodology. The best deposition performance was exhibited by the application via UAV using the COAP 9001 and AirMix 11001 nozzles. For all the treatments, the process remained under statistical control, indicating commendable adherence to quality standards. The aerial application provided greater penetration of the spray into the crop canopy. With the use of the UAV, the coverage on the water-sensitive paper was <1%; moreover, the AirMix 11001 and XR 110015 nozzles had the lowest drift potential.

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System of mathematical equations to predict wear rate on circular-cone orifice of pesticide spray nozzles

Cited by 2 publications

References 0 publications

Evaluation of Different Internal Designs of Hydraulic Nozzles under an Accelerated Wear Test

Evaluation of Different Internal Designs of Hydraulic Nozzles under an Accelerated Wear Test

Use of Unmanned Aerial Vehicle for Pesticide Application in Soybean Crop

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