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Experiment study on spreading and horizontal motions of Lithium Bromide solution droplets on horizontal tubes.

Number: pap. n. 1376

Author(s) : YANG Y., XIE X., JIANG Y.

Summary

Uniform distribution of liquid film on horizontal tubes influences falling film heat and mass transfer efficiency. Droplets spreading and horizontal motions at tube bottoms directly influence liquid distribution on the next row. This paper studies Lithium bromide aqueous solution droplets spreading and horizontal motions on horizontal tubes. A vacuum experimental section is built. The tube diameters and spacing are 16mm. The liquid spray density is 0.05~0.10 kg· m-1· s-1. Droplets horizontal motions are caused by disturbance at tube bottom, which includes different falling film times of adjacent droplets, uneven tube roughness, or non-uniform velocity distribution in the falling film regime. The horizontal motion distance of pre-wetting tubes are larger than that of no pre-wetting tubes. When the orifice spacing is 1.5cm, droplets horizontal motion distance on a 16mm diameter smoother copper tube is 0.45-0.83cm under liquid spray density of 0.050.10 kg· m-1· s-1, and it decreases when liquid spray density rises.

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Details

  • Original title: Experiment study on spreading and horizontal motions of Lithium Bromide solution droplets on horizontal tubes.
  • Record ID : 30026109
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1376

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