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<b>Abstract</b>— <p>Experimental studies of new disc atomizers designed for cooling water with atmospheric air are carried out. Criterial equations are obtained for calculating the hydrodynamic and heat-exchange characteristics of sprayers (radius, height, and volume of the spray torch), as well as volumetric heat-transfer coefficient. The spray efficiency on the flanged disc (Disc no. 3) is greater than the spray volume on the flat disc (Disc no. 1) in the entire studied range of Re and <i>K</i><sub><i>n</i></sub>. The conditions under which the spray disc with nozzles (Disc no. 2) ensures the most efficient atomization of the liquid and high intensity of heat transfer are established. At <i>K</i><sub><i>n</i></sub> = 50 the critical value of the Reynolds criterion will be Re = 277. A diagram is proposed for the graphical determination of the range of values of Re and <i>K</i><sub><i>n</i></sub>, in which the heat-transfer intensity on Disc no.&#xa0;2 is higher than on Disc no. 1.</p>

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Hydrodynamics and Heat Transfer on a Disc Sprayer

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • A. V. Balchugov,
  • I. L. Sablina,
  • D. V. Antonov,
  • A. A. Kramarenko

摘要

Abstract—

Experimental studies of new disc atomizers designed for cooling water with atmospheric air are carried out. Criterial equations are obtained for calculating the hydrodynamic and heat-exchange characteristics of sprayers (radius, height, and volume of the spray torch), as well as volumetric heat-transfer coefficient. The spray efficiency on the flanged disc (Disc no. 3) is greater than the spray volume on the flat disc (Disc no. 1) in the entire studied range of Re and Kn. The conditions under which the spray disc with nozzles (Disc no. 2) ensures the most efficient atomization of the liquid and high intensity of heat transfer are established. At Kn = 50 the critical value of the Reynolds criterion will be Re = 277. A diagram is proposed for the graphical determination of the range of values of Re and Kn, in which the heat-transfer intensity on Disc no. 2 is higher than on Disc no. 1.