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Optimization of the Opening Shape in Slot Spray Nozzles in a Field Boom Sprayer

Author

Listed:
  • Jacek Wawrzosek

    (Department of Applied Mathematics and Computer Science, University of Life Sciences in Lublin, 20-612 Lublin, Poland)

  • Stanisław Parafiniuk

    (Department of Machinery Exploitation and Management of Production Processes, University of Life Sciences in Lublin, 20-612 Lublin, Poland)

Abstract

The European Standard ISO 16122-2:2015 requires that the coefficient of variation for sprayed liquid fall should not exceed 10%. Field sprayers generate a stream of liquid sprayed at an angle that depends on the design of the nozzles. Among field boom sprayers, previous methods for selecting the shape of the opening of a single-slotted spray nozzle have been based on the following rectangular, triangular, normal, beta, and truncated normal distributions; distribution obtained from a nozzle with a stream in the form of an empty cone; and glued square functions. These methods, however, have provided a limited range of uniformity. Consequently, the initial assumption that the monotonicity of the function corresponds to the shape of a quarter of the symmetrical oval nozzle opening allows for a full computerized optimization of nozzle shape with a spray angle of α = 110° (or α = 120°). In this case, the spray uniformity parameter is controlled and freely declines almost to zero. In this study, based on the nonlinear shape obtained, we developed the shape of the nozzle outlet opening with a coefficient of variation of 0.388% using spline linear functions. Further applications of the symmetry of the developed model would allow for multiple modifications of the shape of this opening, and therefore, without changing the spray uniformity parameter, nozzles with slightly different characteristics could be obtained.

Suggested Citation

  • Jacek Wawrzosek & Stanisław Parafiniuk, 2021. "Optimization of the Opening Shape in Slot Spray Nozzles in a Field Boom Sprayer," Sustainability, MDPI, vol. 13(6), pages 1-15, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:6:p:3291-:d:518672
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    References listed on IDEAS

    as
    1. Paweł A. Kluza & Izabela Kuna-Broniowska & Stanisław Parafiniuk, 2019. "Modeling and Prediction of the Uniformity of Spray Liquid Coverage from Flat Fan Spray Nozzles," Sustainability, MDPI, vol. 11(23), pages 1-16, November.
    2. Jan C. Zande & J. F. M. Huijsmans & H. A. J. Porskamp & J. M. G. P. Michielsen & H. Stallinga & H. J. Holterman & A. Jong, 2008. "Spray techniques: how to optimise spray deposition and minimise spray drift," Environment Systems and Decisions, Springer, vol. 28(1), pages 9-17, March.
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