scholarly journals TESTING THE UNIFORMITY OF SPRAY DISTRIBUTION UNDER DIFFERENT APPLICATION PARAMETERS

2017 ◽  
Author(s):  
Alaa SUBR ◽  
Marek MILANOWSKI ◽  
Stanisław PARAFINIUK ◽  
Józef SAWA
Keyword(s):  
Spray Distribution

Spray distribution quality as a measure of benzydamine preparations delivery efficiency

2017 ◽  
Vol 96 (5) ◽  
pp. 126-131 ◽  
Author(s):  
V.G. Yankova ◽  
◽  
S.V. Gribanova ◽  
O.A. Gobyzov ◽  
M.N. Ryabov ◽  
...  
Keyword(s):  
Spray Distribution ◽  
Delivery Efficiency

Model Verification of the Evaporating Diesel Spray Distribution in the Combustion Chamber of a D.I. Diesel Engine

1996 ◽  
Author(s):  
Takuo Yoshizaki ◽  
Keiichiro Yuzaki ◽  
Hiroyuki Hiroyasu ◽  
Hideo Yamashita ◽  
Kazufumi Kaneda ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Combustion Chamber ◽  
Model Verification ◽  
Diesel Spray ◽  
Spray Distribution

A Practical Way to Evaluate Spray Distribution

1953 ◽  
Vol 6 (4) ◽  
pp. 255
Author(s):  
Charles A. Graham
Keyword(s):  
Spray Distribution

Evaluation of Horizontal Patternators According to International Standard Requirements for Boom Sprayers

2021 ◽  
Vol 64 (5) ◽  
pp. 1635-1646
Author(s):  
Emilio Gil ◽  
Mariana Bueno ◽  
Javier Campos ◽  
Montserrat Gallart ◽  
Joao P. A. R. Da Cunha
Keyword(s):  
Distribution Patterns ◽  
Volume Distribution ◽  
List Type ◽  
Operating Pressure ◽  
Spray Pattern ◽  
Iso Standard ◽  
Iso Standards ◽  
Technical Requirements ◽  
Spray Distribution ◽  
Technical Specifications

HighlightsHorizontal distribution according ISO Standard 16119 is a measurement procedure to evaluate boom sprayers.ISO Standards 5682-1 and 5682-2 establish technical requirements for horizontal patternators.In this study, three types of patternators were evaluated to test their capability to meet the standards.The evaluated patternators showed similar results for spray distribution patterns.Minor deviations from ISO Standard 5682 did not imply differences according ISO Standard 16119.Abstract. Uniformity of spray volume distribution is one of the officially established measurements for the evaluation of horizontal boom sprayers according to ISO Standard 16119 and requirements established by ISO Standard 16122. Measurement of spray distribution patterns requires the use of specific devices such as horizontal patternators, which are included in the technical specifications for ISO Standards 5682-1 and 5682-2. Three such devices were tested, including two manual patternators (fixed and mobile) and one electronic patternator. According to information provided by the manufacturers, all three patternators align with ISO requirements. This study evaluated and compared the results obtained with the three patternators. Specifically, the horizontal distributions measured by the patternators were evaluated and compared using four nozzle types (XR 11003, AIXR 11003, TTJ60 11003, and AITTJ60 11003), three boom heights, and three operating pressures. Tests were conducted to quantify single-nozzle spray patterns, the coefficient of variation (CV) of the entire boom distribution, the liquid recovery capability of the three patternators, and the ability to simulate the entire boom spray distribution from a single-nozzle spray pattern. Results demonstrated correct functioning of all three patternators, resulting in identical conclusions considering the requirements established in the ISO standards. The CV values of the horizontal distributions were less than 10% for all cases. Moreover, the trends in values for all the evaluated factors (nozzle type, boom height, and operating pressure) were the same, independent of the patternator used. Keywords: ISO 16119, ISO 16122, ISO 5682, Liquid recovery, Nozzle spray pattern, Patternator, Spray boom, Transverse distribution, Uniformity.

scholarly journals Spraying systems and traveling speed in the deposit and spectrum of droplets in cotton plant

2015 ◽  
Vol 35 (6) ◽  
pp. 1042-1052 ◽  
Author(s):  
Jhonatan D. Cavalieri ◽  
Carlos G. Raetano ◽  
Ronaldo P. Madureira ◽  
Lais L. Q. Moreira
Keyword(s):  
Cotton Plant ◽  
Middle Part ◽  
Operating Conditions ◽  
Phenological Stages ◽  
Spray System ◽  
Leaf Surfaces ◽  
Plant Stage ◽  
Spray Distribution ◽  
Traveling Speed

ABSTRACT Tractor traveling speed can influence the quality of spraying depending on the application technology used. This study aimed to evaluate the droplet spectrum, the deposition and uniformity of spray distribution with different spraying systems and traveling speeds of a self-propelled sprayer in two phenological stages of the cotton plant (B9 and F13). The experimental design was randomized blocks and treatments were three spraying techniques: common flat spray tips; tilted flat jet with air induction, at 120 L ha-1; and rotary atomizer disk, 20 L ha-1, combined with four traveling speeds: 12, 15, 18 and 25 km h-1, with four replications. Spraying deposition was evaluated for both leaf surfaces from the cotton plant apex and base (stage B9) and middle part of the plant (stage F13) with a cupric marker. A laser particle analyzer also assessed the droplet spectrum. The centrifugal power spray system produces more homogeneous droplet spectrum and increased penetration of droplets into the canopy in both phenological stages. Variation on the operating conditions necessary for increased traveling speed negatively influences the pattern of spraying deposits.

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

2019 ◽  
Vol 86 ◽  
Author(s):  
Alcides Marangoni Junior ◽  
Marcelo da Costa Ferreira
Keyword(s):  
Coefficient Of Variation ◽  
Spray Nozzle ◽  
Hollow Cone ◽  
Distribution Profile ◽  
Working Pressure ◽  
Spray Solution ◽  
Phytosanitary Treatment ◽  
Spray Distribution ◽  
Distribution Uniformity

ABSTRACT Manual backpack sprayers are widely used in rural properties in Brazil. However, studies that assess their working characteristics, especially spray tip models and working pressure conditions, are scarce. Thus, the aim of this study was to assess how much the working pressure and spray tips influence the distribution quality of phytosanitary spray solutions in manual backpack sprayers. Four spray nozzles (standard flat-fan Magnojet TP11002, turbo flat-fan TeeJet TT11002, hollow-cone TeeJet TXA8002, and disc-core) were assessed in a patternator table at 1, 2, 3, and 4 bar. Analyses of spray distribution profile were performed by symmetry and the coefficient of variation (CV) analysed by the Tukey’s test (p < 0.05). Spray tip models and working pressure influenced in more than 100% the distribution uniformity values of spray solution and in about 50% the useful range of the phytosanitary treatment. Among the models assessed in this study, the turbo flat-fan spray nozzle presents the best set of characteristics to be indicated for manual backpack sprayers aiming at field phytosanitary treatments.

Pesticide Delivery Systems: Spray Distribution and Partitioning in Plant Canopies

2009 ◽  
pp. 184-184-20 ◽  
Author(s):  
FR Hall ◽  
JP Reed ◽  
DL Reichard ◽  
RM Riedel ◽  
J Lehtinen
Keyword(s):  
Delivery Systems ◽  
Plant Canopies ◽  
Spray Distribution
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