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A Study on Aerosol Spray Characteristics of Different Size Atomizers

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Abstract

In this study, the variations of spray characteristics are tested with air-assisted siphon type different size liquid atomizers. The spray characteristics are analyzed considering three atomizers having the same inlet diameter, with different constricted areas and exit diameters for the flow rates of 42, 57, and 71l pm. Three different mixtures of Oleic Acid with Ethanol, and three different mixtures of Di-Octyl Phthalate (DOP) with Ethanol are employed as working fluids along with the six different suction heights. Experimental outcomes show that, for the same flow rates, solution, and suction height, the droplet size changes by varying the diameter of the constricted area and exit area. The change of any area in atomizer changes the level of turbulence in flow that results in the variation of droplet size and its distribution. The increasing flow rate also assists in increasing the droplet size. Since the droplet size distribution decreases with the increasing viscosity, the use of DOP and Ethanol mixture increases the droplet size as it is more viscous than the Oleic Acid and Ethanol mixture. It is also noticed that at a constant airflow rate, Number Median Aerodynamic Diameter (NMAD), and liquid consumption rate are inversely proportional, whereas the Geometrical Standard Deviation (GSD) and Mass Median Aerodynamic Diameter (MMAD) is directly proportional to the suction height.

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all the data can be provided upon the request of the reviewers.

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Acknowledgments

The support of the Heat Engine Laboratory of Rajshahi University of Engineering & Technology (RUET), Rajshahi, Bangladesh, is gratefully acknowledged; in particular, authors acknowledge the Department of Mechanical Engineering, RUET, for required support.

Funding

This work was partially funded by the Department of Mechanical Engineering, Rajshahi University of Engineering and Technology (RUET), Rajshahi, Bangladesh, and the rest part of the money was carried by the first and fourth authors.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Rajshahi University of Engineering & Technology, Rajshahi, 6204, Bangladesh

    M. R. I. Sarker, Md Sazan Rahman, Soumya Mandal & M. M. Rony

  2. Department of Bioresource Engineering, McGill University - Macdonald Campus, Sainte-Anne-de-Bellevue, QC, H9X 3V9, Canada

    Md Sazan Rahman

  3. Department of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK, 74078, USA

    Soumya Mandal

Authors
  1. M. R. I. Sarker
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  2. Md Sazan Rahman
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  3. Soumya Mandal
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  4. M. M. Rony
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Contributions

MRIS and MMR have set up the experiment and collected the data. MSR has analyzed the data and helped in manuscript writing. SM has reviewed the manuscript.

Corresponding author

Correspondence to M. R. I. Sarker.

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The contents of this article are not submitted or published anywhere else, and there is no conflict of interest in this whole study. All the authors are willingly submitting this work for their journal.

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Sarker, M.R.I., Rahman, M.S., Mandal, S. et al. A Study on Aerosol Spray Characteristics of Different Size Atomizers. Aerosol Sci Eng 4, 306–319 (2020). https://doi.org/10.1007/s41810-020-00076-0

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  • DOI: https://doi.org/10.1007/s41810-020-00076-0

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