scholarly journals Droplet Size Control in Gas-Liquid Pintle Injectors

2021 ◽  
Vol 64 (2) ◽  
pp. 91-100
Author(s):  
Dae Hwan KIM ◽  
Suji LEE ◽  
Youngbin YOON
Keyword(s):  
Droplet Size ◽  
Size Control

Droplet size control in the filter expansion aerosol generator

2008 ◽  
Vol 28 (13) ◽  
pp. 2617-2623 ◽  
Author(s):  
D.S. Jung ◽  
Y.C. Kang
Keyword(s):  
Droplet Size ◽  
Size Control ◽  
Aerosol Generator

Design of a spray dedusting system with variable particle size

2021 ◽  
pp. 1-12
Author(s):  
Guan Li ◽  
Biao Wang ◽  
Xiangli Bu ◽  
Di Wang ◽  
Jingkang He
Keyword(s):  
Particle Size ◽  
Control System ◽  
Droplet Size ◽  
Water Pressure ◽  
Size Control ◽  
Dust Removal ◽  
Experimental Conditions ◽  
Spray System ◽  
Size Uniformity ◽  
Spray Control

This paper proposes a spray control system with variable particle size to address the inaccuracy of droplet size control in the existing spray dedusting system. A PID control algorithm with stable air and water pressure is adopted to ensure droplet size uniformity. An experimental device of the droplet control system is built in the laboratory to verify the algorithm’s effectiveness. Experiments were conducted using PLC as the core controller to verify the influence of different types of nozzles on the droplet size under the same air pressure and water pressure through experiments. The results show: (1) the systems droplet size range is 8–200 μm, which meets the dust removal conditions of respirable dust and is suitable for dust removal. (2) When measured under identical experimental conditions, the droplet size decreases as the nozzle angle increases. It was shown that the spray system combined with various sprinklers can achieve full droplet size coverage and improve the efficiency of dust-fall. It provides a solution for the existing dust removal system to flexibly change the droplet size according to the dust size.

The Impact of Spray Droplet Size on the Efficacy of 2,4-D, Atrazine, Chlorimuron-Methyl, Dicamba, Glufosinate, and Saflufenacil

2016 ◽  
Vol 30 (2) ◽  
pp. 573-586 ◽  
Author(s):  
Cody F. Creech ◽  
Jesaelen G. Moraes ◽  
Ryan S. Henry ◽  
Joe D. Luck ◽  
Greg R. Kruger
Keyword(s):  
Droplet Size ◽  
Size Control ◽  
Dry Weight ◽  
Full Potential ◽  
Weed Species ◽  
Common Lambsquarters ◽  
Droplet Sizes ◽  
Fine Spray ◽  
Volunteer Corn ◽  
The Impact

Herbicide applications often do not reach their full potential because only a small amount of the active ingredients reaches the intended targets. Selecting the appropriate application parameters and equipment can allow for improved efficacy. The objective of this research was to evaluate the effect of droplet size on efficacy of six commonly used herbicides. Atrazine (1.12 kg ai ha−1), cloransulam-methyl (0.18 g ai ha−1), dicamba (0.14 kg ae ha−1), glufosinate (0.59 kg ai ha−1), saflufenacil (12.48 g ai ha−1), and 2,4-D (0.20 kg ae ha−1) were applied to seven plant species using an XR11003 nozzle at 138, 276, and 414 kPa and a AI11003 nozzle at 207, 345, and 483 kPa. Each herbicide, nozzle, and pressure combination was evaluated for droplet size spectra. Treatments were applied at 131 L ha−1to common lambsquarters, common sunflower, shattercane, soybean, tomato, velvetleaf, and volunteer corn. Control from 2,4-D was observed to increase approximately 12% on average for all species except common lambsquarters as droplet size increased from medium to very coarse (Dv0.5303 to 462 μm;Dv0.5is droplet size such that 50% of spray volume is contained in droplets of equal or smaller size). Control with atrazine was near 95% for common lambsquarters, common sunflower, and soybean. Atrazine provided the greatest shattercane control using a medium (Dv0.5325 μm) droplet, whereas the same droplet size provided the lowest tomato control. Control of common lambsquarters, shattercane, and tomato with cloransulam-methyl increased 79% when decreasing droplet size from extremely coarse to fine (Dv0.5637 to 228 μm). Dicamba control of common lambsquarters increased 17% using a medium droplet compared with a fine droplet (Dv0.5279 to 204 μm). Dry weight of common sunflower and soybean was reduced 21% using dicamba when using a very coarse spray compared with a fine spray classification (Dv0.5491 to 204 μm). Common lambsquarters control using glufosinate increased 18% using a fine spray classification (Dv0.5186 μm) compared with medium (Dv0.5250 μm) and both very coarse droplet sizes (Dv0.5470 and 516 μm). Conversely, tomato and velvetleaf control with glufosinate was maximized using a very coarse (Dv0.5470 and 516 μm) or extremely coarse droplet (Dv0.5628 μm) with increases of 11 and 25% compared with a fine spray (Dv0.5186 μm). Saflufenacil control of volunteer corn was 38% greater using extremely coarse droplets (Dv0.5622 μm) than fine, medium, and very coarse spray classifications (Dv0.5257 to 514 μm). Overall, spray classifications for the herbicides evaluated play an important role in herbicide efficacy and should be tailored to the herbicide being used and the targeted weed species.

scholarly journals Enhanced Droplet Size Control in Liquid‐Liquid Emulsions Obtained in a Wire‐Guided X‐Mixer

2019 ◽  
Vol 42 (5) ◽  
pp. 1053-1058 ◽  
Author(s):  
Thapanee Bangjang ◽  
Nikolay Cherkasov ◽  
Petr Denissenko ◽  
Attasak Jaree ◽  
Evgeny V. Rebrov
Keyword(s):  
Droplet Size ◽  
Size Control

Investigation of Temperature-Dependent Droplet Formation of Nanofluids in Microfluidic T-Junction

2008 ◽  
Author(s):  
Nam-Trung Nguyen ◽  
S. M. Sohel Murshed ◽  
Say-Hwa Tan
Keyword(s):  
Droplet Size ◽  
Formation Process ◽  
Size Control ◽  
Droplet Formation ◽  
Deionized Water ◽  
Experimental Investigations ◽  
Temperature Dependent ◽  
Potential Applications ◽  
Increasing Temperature ◽  
Different Characteristics

The study on the control of microdroplet formation and manipulation is very important due to the potential applications of droplet-based microfluidics in various important fields. Experimental investigations on thermally controlled droplet formation and size manipulation of deionized water and nanofluids in a microfluidic T-junction are reported in this paper. The heater temperature affects the droplet formation process. Nanofluids are found to exhibit different characteristics in droplet formation and size control with the temperature. Addition of spherical-shaped TiO2 (15 nm) nanoparticles in deionized water results in much smaller droplet size compared to the cylindrical-shaped TiO2 (10×40) nm) nanoparticles. Other than nanofluid with cylindrical-shaped nanoparticles, the droplet size was found to increase with increasing temperature.

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